Class 7 Science

Animal Nutrition

Extra Questions

Very short answer type question:

Question 1: What is a carnivorous animal? Give two examples.

Answer: Animals, which eat the flesh of other animals, are called carnivorous, e.g. lion, tiger.

Question 2: What is the function of the digestive juice secreted by the liver?

Answer: The digestive juice from the liver breaks up fat into tiny particle.

Question 3: Name the organs that make up the alimentary canal.

Answer: Mouth, oesophagus, stomach, small intestine, large intestine and rectum compose the alimentary canal.

Question 4: Name the four types of teeth.

Answer: The four types of teeth are: Incisors, Canines, Premolars and Molars.

Question 5: Name the four compartments in a ruminant’s stomach.

Answer: Four compartments in a ruminant’s stomach are: Rumen, reticulum, omasum and abomasum.

Choose the correct answer:

Questions 1: Movement of food through alimentary canal is called by which of these terms?

(a) Locomotion
(b) Peristalsis
(c) Pumping
(d) Sliding

Answer: (b) Peristalsis

Question 2: The liver produces which of these enzymes?

(a) Amylase
(b) Trypsin
(c) Lipase
(d) None of these

Answer: (d) None of these.

Question 3: Which of these is not a part of nutrition?

(a) Digestion
(b) Excretion
(c) Assimilation
(d) Egestion

Answer: (b) Excretion.

Question 4: Digestive juice is not secreted by which of these organs?

(a) Small intestine
(b) Liver
(c) Stomach
(d) Oesophagus

Answer: (b) liver

Question 5: The walls of the large intestine absorb which of these?

(a) Cellulose
(b) Digested food
(c) Oxygen
(d) Water

Answer: (d) Water.

Question 6: Which of the following is not a part of ruminant stomach?

(a) Reticulum
(b) Anus
(c) Omasum
(d) Abomasum

Answer: (b) Anus

Question 7: Bile is produced by which organ?

(a) Pancreas
(b) Gall bladder
(c) Liver
(d) Stomach.

Answer: (c ) Liver

Match the following

Column AColumn B
(1) Villi(A) Large intestine
(2) Hydrochloric acid(B) Liver
(3) Bile(C) Mouth
(4) Absorption of water(D) Stomach
(5) Mastication(E) Small intestine

Answer: 1-E, 2-D, 3- B, 4- A, 5- C

Fill in the blanks

1: Most of the enzymes in the small intestine come from ______
2: The __________ present on our tongue help us to taste food.
3: Saliva is secreted in the mouth by _______________
4: Living organisms that cannot make their own food are called__________

Answer: 1 → Pancreas, 2 → taste receptor, 3 → salivary gland, 4 → heterotrophs
Write true and false

1: Absorption and assimilation are similar processes.
2: Some plants are heterotrophic and depend on others for food.
3: Hydrochloric acid is present in the stomach.
4: Pitcher plant is an example of insectivorous plant.
5: Saprophytes are green in colour.
6: Ruminants have a three-chambered stomach.
7: An adult human has 32 teeth in all – 16 in each jaw.
8: Tongue gives the sense of smell.

Answer: 1 → F, 2 → T, 3 → T, 4 → T, 5 → F, 6 → F, 7 → T, 8 → F