Question 1

True or FalseRoti is made from atta and water.

Accepted Answer

True, roti is made from atta and water.

Question 2

Some ingredients are common for different food items. Discuss.

Accepted Answer

Some ingredients are common for different food items. By looking at different types of food there are some ingredients that are common for most of the food items one of such product is water which is almost present in every food items.In addition to this turmeric powder is another product that is added to most of food items. Many spices are common for different food items.

Question 3

Chose the correct food chain from the following:

Accepted Answer

Leaves → insect → bird is the correct order of the food chain.

Question 4

Which of the following is true for a parasite?

Accepted Answer

The mode of nutrition in which an organism obtains its food from the body of another living organism is called parasitic nutrition.- The organism which obtains the food is known as a 'parasite' and the organism from whose body food is obtained is known as a host.- Parasite organisms get food from the host body but in return, it does not provide any benefit to the host.

Question 5

Herbivores have …………………….. grinding teeth.

Accepted Answer

Herbivores have strong grinding teeth.

Question 6

……………………………. feed on dead animals and help to keep the surroundings clean.

Accepted Answer

Scavengers feed on dead animals and help to keep the surroundings clean.

Question 7

Two edible seeds from which oil is extracted.

Accepted Answer

Mustard and sunflower seeds are the two edible seeds from which oil is extracted.

Question 8

Do you find that all living beings need the same kind of food?

Accepted Answer

No, all living beings do not need the same kind of food. Because any living beings have other habits of eating. There are three types of animals on the basis of eating habits:(i) Herbivores: - Those animals which eat plants and products of the plant are called herbivores. Because they have wide and strong teeth which are not able to eat flesh or meat.Examples: - Cow, Goat, Buffalo, etc.(ii) Carnivores: - Those animals which eat other animals and flesh are called carnivores. Because they have sharp and pointed teeth which allow eating flesh or meat.Examples: - Lion, tiger, hyena, etc.(iii) Omnivores: - Those animals which eat plant products and flesh both are called omnivores. Because they have both types of teeth which are, which allow eating flesh and any product of a plant.Examples: - Human, cat, dog, etc.

Question 9

How animals are classified based on their feeding habits?

Accepted Answer

Animals can be classified into the following categories according to their food habits:1. Herbivores: Those dependent on plants for food.2. Carnivores: Those dependent on other animals for food.3. Omnivores: Those eating plants as well as animals.

Question 10

What are scavengers and decomposers? Give two examples of each of them.

Accepted Answer

Scavengers are the animals which mainly consume the dead bodies of other animals e.g., hyena, jackal, vulture, etc. Decomposers are the organisms which decompose (breakdown) the dead remain of plants and animals into simple form which they can easily absorb. Examples of decomposers are bacterial and fungi.

Question 11

What is a food chain?

Accepted Answer

The sequence of living creatures that represent who eats whom in an ecosystem is called a food chain. The food chain describes how an organism derives energy and nutrients by eating other organisms. It shows the relationship between the producers and the consumers (e.g. deer, goats, cows and tiger).

Question 12

List the difference between scavengers and parasites.

Accepted Answer

Scavengers eat other dead animals. Scavengers are very important for us because they help in keeping our surroundings clean.Parasites lives on other living creatures and depends on it for obtaining nutrients.  Most parasites harm their hosts.

Question 13

(a)  All living organisms need food to survive but the type of food eaten by each organism is different. Justify this statement.(b)  What are sprouted seeds? How they are eaten?

Accepted Answer

(a) All living organisms need food to survive but the type of food eaten by each living organism is different. This is because different people have different tastes, habits and lifestyles. The type of food eaten also depends upon the region where a person lives because the availability of food is different at different regions or places, depending upon the soil, climate and culture of that particular place. For example, people living in Punjab prefer to eat chapati with pulses and vegetables, whereas people living in Tamil Nadu prefer to eat dosa and idli along with sambhar.Different animals eat different kinds of food as per their body structure and internal organs. Depending on the kind of food they eat, animals are divided into three basic categories:1. Herbivores: Animals that feed on plants and plant products are called herbivores. Examples: cow, goat, elephant, dear, etc.2. Carnivores: Animals that feed on other animals are called carnivores. Examples: lion, tiger, fox, etc.3. Omnivores: Animals that feed on both plants and animals are called omnivores. Examples: crow, cat, dog, etc.(b) Sprouted seeds: Seeds that grow white thread-like structures when soaked in water are called sprouted seeds.Sprouts are seeds that have been allowed to germinate into young plants. They are usually eaten raw and are available in a wide range of varieties.

Question 14

Name the various categories of animals based on their eating habits. Give three examples of each of them.

Accepted Answer

Classification of animals based on food habits:Depending on the food they consume, animals can be classified into different groups like carnivores, herbivores, omnivores, and scavengers.1. Carnivores: Animals that depend on other animals for their food are carnivores. They are flesh-eaters.Examples include lion, tiger, etc.2. Herbivores: Animals depend only on plants for their food.Examples: cow, elephant, goat, etc.3. Omnivores: Animals that depend on both plants and other animals for their food are omnivores.Examples are humans, bears, birds, dogs, etc.4. Scavengers: Animals that feed on the dead bodies of other animals.Examples are bears, vultures, crows, etc.

Question 15

Which of the following is a good source of proteins?

Accepted Answer

Gram, pea and meat all of them are good source of protein.

Question 16

Which vitamin is required for healthy eyes?

Accepted Answer

Vitamin A is essential for good vision. It is a component of the protein rhodopsin, which allows the eye to see in low-light conditions.

Question 17

Deficiency of minerals causes swelling of the thyroid gland?

Accepted Answer

A deficiency of iodine causes swelling of the thyroid gland.

Question 18

Which vitamin is soluble in water?

Accepted Answer

The water-soluble vitamins include Vitamin C and Vitamin B complex (thiamine, riboflavin, niacin, pantothenic acid, pyridoxine, biotin, folate, and cobalamin).

Question 19

Puneet is eating lunch consisting of chapatis, vegetable curry and orange juice. Which of the following food components is missings from his food?

Accepted Answer

Chapatis are rich in carbohydrates, which is an energy-building food and vegetables and orange juice are rich in vitamins and minerals, which are called protective foods. The component of food missing from Puneet's lunch is protein, which is a body-building food. Proteins are missing from his food.

Question 20

Which of the following meals can be considered as a balanced diet?

Accepted Answer

The diet which contains an adequate quantity of all the nutrients is called a balanced diet. Chapati, dal, spinach and ghee would be a balanced diet as it contains all the essential nutrients such as carbohydrates (chapati), proteins (dal), vitamins and minerals (green- leafy vegetables).

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