Seed – A seed is an important part of a flowering plant. They give rise to a new plant. They may be of different shapes, colors and sizes. E.g. – Bean seed.

Germination – The process by which new plants grow from a seed is called germination. It is a process that takes place when the embryo within the seed becomes active and starts to grow into a young baby plant.

Root – It is the part of a plant that grows under the ground. It absorbs water and minerals from the soil. They also anchor the plant firmly in the soil and also bind the soil together.

Shoot – It is the aerial part of a plant (develops above the ground). It includes stems, leaves, buds, flowers & fruits.

Topsoil – Topsoil is the uppermost layer of the soil which is rich in organic matter & supports the growth of plants.

Tap root – Taproots have a main central root from which small, lateral roots come out. E.g.- Mustard, carrot, beetroot, parsley, china rose etc.

Fibrous root – Fibrous roots do not have a main root & all roots seem similar and arise from the same point. E.g.- Rice, wheat, maize, marigold, banana etc.

Burdock – It is a plant found all over the world. Its roots are used as food. Seeds and leaves of this plant are also used for medicinal purposes.

Nutrients

• They are the components present in food which are important for life & provide us energy, they are considered as building blocks for growth and repair.
• Major nutrients required for plants are Nitrogen, Phosphorus and potassium.

Lateral root – Lateral roots are the smaller roots that come out from the main root and help anchor the plant into the soil.

Stem – It is the part of a plant present just above the ground. It helps in conduction of water and minerals absorbed by roots from the soil. It bears leaves, flowers and fruits.

Herb – Herbs are short plants, with green and delicate stems. Compared to other plants, these plants have very few branches and come off easily from the soil. E.g- Grass, Mint, and Wheat etc.

Shrub – Shrubs are medium-sized, woody plants taller than herbs and shorter than a tree. They have bushy, hard, and woody stems with many branches. Eg: Rose, Jasmine, Lemon and Tulsi.

Tree – Trees are big and tall plants. They have very thick, woody and hard stems called the trunk. The trunk gives rise to many branches that bear leaves, flowers and fruits. Eg : Mango, Banyan and Coconut.

Tender stem – The thin and delicate stems are called tender stems. For example Broccoli- we can eat the stalk and flower both.

Trunk – The thick and main stem of the tree from which branches grow is called trunk.

Creepers-Creepers are the plants that creep on the ground. They have very weak, long, thin stems that can not stand upright. Eg: Watermelon, Strawberry, Pumpkin and Sweet potatoes.

Climbers – Climbers have a very thin, long and weak stem which cannot stand upright but they can use support to grow. Eg: Pea plant, Grapevine, Sweet gourd, Money plant.

Grapevine – The stem of grape plants, which grows upward with the help of tendril.

Tendril – A tendril is a modified stem or leaf with a thread-like shape that is used by climbing plants for support.

Photosynthesis – Photosynthesis is a process of synthesis of food in plants using carbon dioxide and water in the presence of sunlight with the help of chlorophyll pigment.

Leaf – Leaf is a green flat part of a plant, it contains chlorophyll which helps in preparation of food by the process of photosynthesis.

Midrib –The thick prominent vein that runs along the middle of the lamina is called midrib. Midrib divides the surface of the lamina into two.

Vein – The lines on the leaf that comes out from a midrib are called veins.

Petiole – Petiole is the long, thin, stalk that connects the leaf blade to the stem.

Lamina – It is also known as leaf blade. It is generally the green, flat surface of the leaves.

Venation – The pattern or the arrangement of veins on the leaf is called venation. It can be either reticulate venation or parallel venation.

Reticulate Venation – The veins are arranged in a net-like fashion on both sides of midrib. E.g.: Rose plant, Hibiscus etc.

Parallel venation – In a parallel venation, the vein runs parallel to each other. E.g.: Maize, Banana etc.

Relation between different types of leaves and roots –

Leaf venation and the type of roots in a plant are related. Plants with fibrous roots have parallel venation in their leaves. Plants with tap roots have reticulate venation in their leaves.

Transpiration- Transpiration is the loss of water in the form of water vapour from aerial  parts ( i.e parts which are exposed to the air )  of the plant.

Flower – Flowers are the most colorful part of a plant. It is also called the reproductive part as it carries the reproductive organs. Eg: Rose and Hibiscus.

Petal – Petal is the colorful part of a flower. It has fragrance and helps in attracting the insects for pollination.

Sepal – It is the green leaf-like part of the flower present below the petals. It protects the inner parts of the flower when it is a bud.

Stamen – The male reproductive part of the flower is called stamen. It consists of anther and filament.

Pistil – The female reproductive part of the flower is called Pistil. It consists of three parts- stigma, style and ovary.

Anther – The oval/round structures present on the top of the filament is anther. They produce pollen grains.

Filament – A long thread-like structure on the top of which anther is present.

Stigma – It is the topmost part of the pistil (female reproductive part of a flower) which receives the pollen grain.

Style – It is the long tube-like structure which connects stigma to the ovary.  

Ovules – Ovules are present inside the ovary and develop into seed.

Incomplete flower– A complete flower is the one that consists of sepals, petals, stamens and pistils. If the flower lacks any one of these parts, then it is an incomplete flower. Example -Sweet corn.

Complete flower– A complete flower is the one that consists of sepals, petals, stamens and pistils. Example – Rose, Hibiscus.

Pollination-  The transfer of pollen grains from anther to stigma is known as pollination.

Fertilization-  The fusion of male gamete and female gamete to form a zygote is known as fertilization.

Edible-  Anything that can be eaten is known as edible.

Seed dispersal- The spreading of seeds to different places is known as seed dispersal.

Embryo- It is a stage in development of the zygote.

Conduction– It is the transfer of water and minerals from one part of the plant to another part.

Sessile leaves- Sessile leaves are directly attached to the stem without a petiole. Example- Saffron.

Mosses- Mosses are small non-flowering plants. They are predominantly found in aquatic environments.

Algae- Algae are organisms that are capable of performing photosynthesis and are mostly aquatic organisms.

Monocots- Monocots are the flowering plants in which the seeds have only one cotyledon. Example: Rice, Grass, Maize etc.

Dicots- Dicots are the flowering plants in which the seeds have two cotyledons. Example: Rose, Pea, Mango etc.

Experiment to test for the presence of starch in leaves – 

Take a leaf in a test tube and pour alcohol solution till it completely covers the leaf. Now put the test tube in a beaker having water. Heat the beaker till all the green colour from the leaf comes out into the alcoholic solution in the test tube then take out the leaf and wash it with water and pour some iodine solution over it. The iodine solution is brown in colour but when it comes in contact with starch it turns blue-black, this confirms the presence of starch in the leaf.

Why should we boil the leaf in an alcohol solution – Leaf has to be boiled in alcohol so that chlorophyll pigment in the leaf is removed and the green colour of the leaf comes out. So that it should not interfere in our result.

Why are leaves green in colour – Leaves are green in colour due to presence of chlorophyll pigment.

Why are petals colourful – Petals are colourful so that they can attract insects for the process of pollination.

Example of Plants with joined sepals– Example of Plants with joined sepals are Hibiscus and Cotton.

Example of Plants with separate sepals – Example of Plants with separate sepals are Rose, Lily and Lotus.

Living Things – Living things are the organisms which possess life, usually identified with few characteristics such as growth, movement, reproduction etc. Examples: dogs, cats, housefly, humans, trees, shrubs etc.

Non-living things – Non-living things do not possess life, they do not have any of the characteristics of a living organism. Examples: Chairs, tables, pens, clouds, soil etc.

What are the characteristics which differentiate living organisms from nonliving things?

Living organisms possess certain characteristics like growth, movement-internally and externally, reproduction, excretion, respiration, sensitivity or response to stimuli and have a definite life span.  All the characteristics are shown by the living organisms throughout their life period.

Growth – Growth is the gradual development of age, size, height, weight etc. in living things. Example: A kitten grows into a cat, A child grows into an adult human being.

Germination – Germination is the process of growth of a young plant or seedling from the seed when the suitable conditions like temperature, water and air are available.

Locomotion – Locomotion is the ability to move from one place to another.

Excretion – Excretion is a process of eliminating waste products that are being produced inside the body. Example: Kidneys help in excreting the wastes in the from of urine

Egestion – Egestion is the process of removal of undigested food from the body.

Reproduction – Reproduction is the process of producing offspring/the young ones that are similar to the parent organism.

Respiration – Respiration is the process of producing energy from the food we consume with the help of oxygen.

Breathing – Breathing is the process of taking in air (inhalation) and giving out air (exhalation). It is a part of respiration.

Stimuli and stimulus – Stimuli are the changes or events in the surroundings that make an organism respond or react to them. Example: When we touch a hot pan we get the sensation of heat, and withdraw the hand. Here, heat is the stimulus and withdrawing the hand is the response. Stimulus is a singular term and stimuli is plural.

Nutrition – Nutrition is a method/ mode by which food is consumed by the organism and its utilization for nourishing the body (to provide energy, growth, development etc.)

Photosynthesis – Photosynthesis is a process by which plants produce their own food. Plants use carbon dioxide and water to prepare their food in the presence of sunlight.

Plants – A plant is a living organism that is capable of growing in land as well as water. It produces its own food by photosynthesis. It generally has roots, stem, leaves and flowers (some plants are non-flowering) Examples: Mango tree, Sunflower, Water lily, Money plant etc.

Animals – Animals are the living organisms that show locomotion and they depend on other organisms for their food. Examples: Cats, Birds, Fishes, Humans etc.

 Energy – Energy is the strength required to do any mental or physical activity. Organisms use the energy they get from food to grow, to reproduce, to respond to stimuli, to carry out daily activities etc.

Organism – An organism refers to an individual living thing that shows the characteristic features of life such as movement, reproduction, growth and development etc.

 Clouds also grow in size and move from one place to another. Then why are clouds nonliving?

In living organisms all the characteristics are shown at some or the other point of life though not all at once. But clouds only show two characteristics: growth (due to accumulation of water droplets) and movement from one place to another (with the help of wind) which is different from living organisms. They do not show the remaining characteristics like respiration, excretion and reproduction. Hence, clouds are non living things.

 Stomata –

• Stomata are the small openings (pores) that are present on the surface of the leaves.
• They are present more in number on the lower surface (under side) of the leaves. These small pores help in gaseous exchange and also help in transpiration. When stomata are open, air enters or leaves just like in the windows.

Transpiration – Transpiration is the loss of excess amounts of water in the form of water vapor from the surface of leaves with the help of tiny pores known as stomata. It helps the plant to absorb more water and minerals from the soil and also helps in keeping the plant cool during hot weather like how we sweat.

Earthworm – Earthworm is a type of worm that is found in the soil. It has bristles for movement. It is also known as the ‘Farmer’s friend’.

Lungs – Lungs are a pair of organs situated within the rib cage that are spongy and pink in color. They help in breathing.

Gills – Gills are a pair of organs found in aquatic animals such as fish, they are involved in the process of breathing under water.

Slimy – Slimy substances are the things that are wet and a little sticky.

Slimy skin – Some organisms naturally have a slimy substance on their skin which makes their skin wet and sticky. Example: Earthworms

Wastes in human body – Waste products that are being removed in human bodies are urea, salt, uric acid and other chemical substances which could be harmful.

Shedding of leaves – In unfavorable weather conditions some plants drop their leaves to reserve the food and protect themselves. This process of removing leaves is called, shedding of leaves. Plants also store waste materials in the old leaves, so that the wastes get removed when the leaves shed off.

Resin – Resin is a sticky substance which gets released or oozes out from some trees. It is insoluble in water and is used in making glues and varnishes.

Latex – Latex is a milky secretion oozes out from some plants when the plant is cut.  Latex of the rubber trees is the natural source of rubber.

Secretion – A process by which a cell or an organ of a living organism produces chemical substances that are required for various functions. For example- Mouth secretes saliva

Vegetative part of a plant – Except flowers, all other parts of the plant are known as vegetative parts. Flowers are known as reproductive parts as they help in reproduction in plants. Example: Root, Stem and leaf.

Sensitivity – Sensitivity is the ability of responding to the stimuli such as heat, pain, pressure etc. It can also be termed as the response to stimuli.

Mimosa pudica/Touch me not – Leaves of the touch-me-not plant (Mimosa pudica) curl up or get folded when touched due to sudden loss of water. Hence it got the name as touch-me-not. Touch is the stimulus and curling of the leaves is the response. The plant curls its leaves as a method of self-protection so that the animals do not eat them.

Internal Movement – Movement of substance inside the body of an organism is called internal movement. Example: Movement of blood inside our body.

External Movement – Movements that take place outside the body of an organism. Example: Waving hands, Walking etc.

Life span – A period of life of an organism from its birth to death is called life span. Examples: Lifespan of dogs – 10 to 13 years, Lifespan of horse – 25 to 30 years.

Polar bear – Polar bear is an animal that lives in polar regions. It has white fur, black skin and a thick layer of fat under their skin.

Cactus – Cactus is a desert plant which has modified stems and leaves. It also has long roots that penetrate deep into the soil for absorption of water.

Weather  – The day-to-day conditions of the atmosphere such as temperature, rainfall, wind etc. at a particular place is called weather.

Climate – A climate is the average weather of a particular place over years.

Habitat  – Habitat is a natural place where organisms live. It provides food, water, shelter and space to survive . It consists of both biotic and abiotic factors.

Biome – A biome is a large biological community where different types of plants and animals live, they share common characteristics specific to that area.

Nocturnal –Nocturnal animals are the animals that hunt in the night and stay in their burrow during the day time.

Shrubs – Shrubs are the type of plants that are bushy and branch into a few thick stems at base.  They are shorter than trees and larger than herbs.

Predator – Predators are the organisms that eat other animals. For example in case of a lion and deer, the lion is the predator that hunts the deer.

Prey – Preys are the animals that are being eaten by the predators.  For example in case of a lion and deer, the deer is the prey which gets hunted by the lion.

Hooves – Hoof (Plural is Hooves) is the horny part of the foot found in animals such as mountain goats, horses, deer. Hooves help the animal to walk long distances on the rocky mountain surfaces.

Ecosystem – An ecosystem is a community of living organisms (biotic factors) like plants and animals that interact with each other and their environment (abiotic factors).

Biotic – Bios means life. Biotic things or factors include all living organisms. Examples include cats, trees, dogs etc.

Abiotic  – Abiotic things or factors include all the non-living things. Examples include Table, pen, notebook etc

Streams – Stream is a flowing water body similar to a river but smaller and narrower in size.

Salinity – Salinity is the amount of salt dissolved in the water.

Saline water – If the water has a high concentration of dissolved salt in it, it is called saline water.

Terrestrial habitat – Terrestrial means land. Terrestrial habitats are ones that are found on land, like forests, grasslands and deserts.

Aquatic habitat – Aquatic refers to water. Aquatic habitat is a habitat with water bodies such as a river, lake, pond, sea and oceans.

Acclimatization – Small changes that take place in the body of an organism to get used to to changes in surroundings are called acclimatization. This takes place over short periods of time.

Adaptation – Adaptation is the specific features or the changes in behaviour and appearance that enable an organism to live in a particular environment (habitat), depending on the factors like temperature, availability of water etc. Adaptation takes place over thousands of years.

Blow holes – Nostrils of animals like whales and dolphins are called blow holes, they are involved in breathing and are located at the top or back of their head. Dolphins and whales do not have gills. They have lungs. They breathe air through their blowholes.

Adaptations in camel

• They have long legs to keep their body away from the hot sand.
• They excrete small amounts of urine and their dung is very dry.
• They have long eyelashes to protect their eyes in sandstorms.
• They are capable of losing very little water from their bodies and hence can survive without water for a long period of time.

Hump – Elevated fleshy structure on the back of a camel. Food is stored as fat in the hump. And hence the camel can go on without eating for months.

Adaptations in fish

• They have streamlined bodies to help them swim easier in water.
• Body is covered with slippery scales that protects them as well as assists them with easy movement under water.
• They have thin fins and a tail that helps in the change in direction and maintain balance during movement.
• Gills help in respiration.

Streamlined body – Streamlined body is the one which has pointed or narrow ends and the middle portion is wider. This streamlined shape of the body helps fish to swim easily without resistance from water and birds to easily fly without resistance from air.

Adaptations of desert plants

• The leaves in desert plants are either absent or are very small and form spines, to reduce loss of water through transpiration.
• Photosynthesis is usually carried out by stems.
• The stem is covered with a thick waxy layer which prevents the loss of water.
• Roots grow long and deep in search of water inside the ground.

Adaptations of high altitude plants. – The trees are cone shaped with sloping branches provided with needle-like leaves that helps water and snow to easily slide off.

Adaptations of aquatic plants

• Roots are highly reduced and their main function is to hold the plant in place.
• Only the flowers and leaves of some plants float on the surface of water to receive maximum sunlight.
• Submerged plants will have highly divided leaves that allow easy flow of water through them without damaging them.

Frog

• They are capable of living in both water as well as land. Adult frogs breathe through skin under water, and when on land they breathe through their lungs.
• They have strong legs that help them in leaping and webbed feet that help in swimming.

Why do we experience difficulty in breathing in higher altitudes and while doing physical exercises?

At higher altitudes like on mountains the availability of oxygen is less. So, we have to breathe more to supply the body with the amount of oxygen it requires. This causes difficulty in breathing.

Our body uses oxygen to breakdown food and release energy. When we do vigorous exercises, our body requires more energy. So more oxygen is required. So, to supply the body with the required amount of oxygen we breathe more. This causes difficulty in breathing.

Why do nocturnal animals like desert snakes, rats etc., come out only during the night?

Animals that are active during night are called nocturnal animals. Many desert animals are nocturnal to avoid the hot sun during the day time while the nights in deserts are cooler. They cannot get easily noticed in the night so they can easily escape from the predators. 

Why do desert plants have spines?

In desert plants, leaves are modified into spines like in cactus to prevent the loss of water through transpiration and also to protect themselves from getting eaten by the herbivore animals of the desert.

Why do frogs and ducks have webbed feet?

Frogs are amphibians which live both on land and water. Aquatic birds like ducks, swans, penguins etc., spend most of their time in water. So, to help these organisms to swim easily in water, they have webbed feet, which act as paddles (the flat blades used in boats to move forward in water) and help in moving them forward.

Melanin – A pigment which is responsible for giving color to the skin, hair and eyes. It also protects our skin from the sun.

Why are people dark skinned ?

People in high temperature regions are exposed more to the sun and hence they have more melanin – to protect their skin from the sun. That is why they are dark skinned.

Digestion in housefly – The housefly vomits digestive juices and saliva onto the food material and sucks in the partially digested food

Digestion in dogs – They have a short digestive system because they feed on meat that has been dead for sometime. They digest and excrete within 6 hours. They have a short digestive system / digestion duration because if the meat stays in the digestive system for any longer the meat starts decaying and that is harmful for the dog.

Digestion in Rabbits

• The undigested food is stored as moist pellets in the small intestine of the Rabbit. It is acted upon by digestive enzymes and it gets partially digested. The pellets are excreted as faeces
• And it is consumed again by the rabbit to complete digestion.

Genes – They determine our physical characteristics – how we look etc.

Melanoma / skin cancer – if skin is exposed to sun for a long time it changes its genetic structure which leads to cancer.

Sweating is an adaptation, how ?

Human body temperature is 37 degree Celsius. And we are adapted to maintain this temperature by sweating. When the surrounding temperature is high and we feel hot, we sweat. This sweat evaporates and cools the body down.

Ecology – Ecology is the study of living organisms and their interaction with each other and with the environment.

Kangaroo rat – A nocturnal desert animal. It never drinks water but breaks down fat in the body and the hydrogen molecule in fat combines with oxygen and forms tiny amounts of water.

 Spiny leaves – Cactus plants have long pointed spines (leaves are modified into spines) to reduce water loss due to transpiration.

 Grassland  – A biome which has large trees and carpets of grass.

 Tundra

• It is a biome which is covered with ice and it is the coldest and harshest biome.
• Plants in this region are short in height, to protect themselves from the wind. The leaves are leathery to store moisture and heat.

 Countershading  – In fishes, the upper body is dark colored and the lower body part is lightly colored. This happens so that the fish is camouflaged (blends with the colour) in the water and is protected from predators.

Hello Learners here we are sharing with you all Class 6 Science MCQs, Class 6 Science Very Short Questions, Short Questions, Long Questions and Class 6 Important Multiple Choice Questions

Q1 Diseases that occur due to lack of nutrients over a long period are called disease.

1. scurvy
2. deficiency
3. Beri-Beri
4. None of these

Q2. Repeated washing of rice and pulses may remove some and present in them.

1. vitamins
2. minerals
3. both a and b
4. none of these

Q3. Get lost in the process of cooking and preparations.

1. Nutrients
2. Oil
3. Taste
4. Spices

Q4. What happen if excess water is used during cooking and is then thrown away?

1. tastes is lost
2. Oil is lost
3. Many useful proteins and considerable amount of minerals are lost
4. None of these

Q5. How do we get most of the water that our body needs?

1. The liquid we drink-such as water, milk, tea
2. We add water to most cooked food
3. Many food materials that we eat themselves contain water
4. All of these

Q6. How many meals does a child take everyday?

1. 7
2. 4
3. 3
4. none of these

Q7. What food items we eat in our lunch?

1. Curd, Roti, Dal
2. Biscuit, milk
3. Only fruit
4. All of these

Q8. How many groups can be classified of nutrients required by our body?

1. 7
2. 4
3. 3
4. 8

Q9. ___________ are made up of carbon, hydrogen and oxygen.

1. Vitamins
2. Calcium
3. Proteins
4. Carbohydrates

Q10. The excess carbohydrates are mainly stored in the body as:

1. Calcium
2. Proteins
3. Fats
4. Roughage

Q11. Carbohydrates are present in the form of:

1. Sugar
2. Starch
3. both 1 and 2
4. none of these

Q12. The human body is made up of amino acids and constitute all proteins of the body.

1. 10
2. 20
3. 30
4. 15

Q13. _________ are body building foods.

1. Fats
2. Calcium
3. Vitamins
4. Proteins

Q14. What is the similarities of carbohydrates and fats ?

1. both have sugar
2. both have starch
3. both have oxygen, carbon and hydrogen
4. all of these

Q15. What is the main difference between carbohydrates and fats?

1. the amount of oxygen is less in fats as compared to carbohydrates
2. the amount of oxygen is more in fats as compared to carbohydrates
3. the amount of oxygen is same in fats as compared to carbohydrates
4. none of these

Answer Key-

Multiple Choice Answers:

1. deficiency

Explanation: Diseases that occur due to lack of nutrients over a long period are called deficiency diseases.

2. both (a) and (b)

Explanation: Repeated washing of rice and pulses may remove vitamins and minerals present in them.

3. Nutrients

Explanation: Nutrients get lost in the process of cooking and preparations.

4. Many useful proteins and considerable amount of minerals are lost

Explanation: Many useful proteins and considerable amount of minerals are lost if excess water is used.

5. All of these

Explanation: Through all of these given statements we get most of water, that our body needs.

6. 3

Explanation: A child takes 3 meals everyday.

7. Curd, Roti, Dal

Explanation: We eat curd, roti, dal in our breakfast.

8. 7

Explanation: 7 groups can be classified as nutrients required by our body.

9. Carbohydrates

Explanation: Carbohydrates are made up of carbon, hydrogen and oxygen.

10. Fats

Explanation: The excess carbohydrates are mainly stored in the body as fats.

11. both (a) and (b)

Explanation: Carbohydrates are present in the form of sugar and starch.

12. 20

Explanation: The human body is made up of 20 amino acids.

13. Proteins

Explanation: Proteins are body building foods.

14. both have oxygen, carbon and hydrogen

Explanation: Both have oxygen, carbon and hydrogen.

15. the amount of oxygen is less in fats as compared to carbohydrates

Explanation: The amount of oxygen is less in fats as compared to carbohydrates.

Very Short Question:

Q1. Do all meals consist of the same food items?

Answer: No, all meals do not have the same food items.

Q2. Why should a meal have different food items?

Answer: A meal should have different food items because our body needs different kinds of nutrients for proper functioning.

Q3. Do all foods contain all the required nutrients?

Answer: No, all foods do not contain sill the nutrients required by our body.

Q4. Name two main types of carbohydrates found in our food.

Answer: (i) Starch (ii) Sugar

Q5. What are carbohydrates?

Answer: The compounds of carbon, hydrogen and oxygen which provide energy for our body are called carbohydrates.

Q6. What happens when two or more drops of iodine solution fall on starch substance?

Answer: The colour of the substance becomes blue-black.

Q7. If any food item gives blue-black colour with iodine then which nutrient is present in the food?

Answer: Starch.

Q8.  Name two substances which provide carbohydrates.

Answer: (i) Potato (ii) Rice/ wheat/ maize/ sugar

Q9. Name the food nutrient indicated by an oily patch on paper.

Answer: An oily patch on paper shows the presence of fat.

Q10. Name two energy-providing nutrients.

Answer: (i) Carbohydrates (ii) Fats