If salivary amylase is lacking in the saliva, which of the following events in the mouth cavity will be affected?

Starch breaking down into sugars.

Proteins breaking down into amino acids.

Fats breaking down into fatty acids and glycerol.

Choose the function of the pancreatic juice from the following statements.

Trypsin digests proteins and lipase digests emulsified fats

Trypsin digests proteins and lipase digests carbohydrates.

Trypsin digests emulsified fats and lipase digests proteins

The main function of intestinal villi is -

provide large surface area for absorption

distribute digestive enzymes uniformly

Major function of HCl of gastric juice is to -

providing acidic medium for pepsin

Which set is mixed with the food in small intestine?

Bile, pancreatic juice, intestinal juice

Gastric juice, bile, pancreatic juice

Bile, pancreatic juice and saliva

Which combination of statements is correct?

i. Hydra uses its tentacles to catch food. ii. Mosquito sucks up the blood of animals with its proboscis. iii. The food moves in the alimentary canal by the process of peristalsis. iv. The body of amoeba has finger-like projections called villi.

Ridhima took two test tubes labelled as 1 and 2 as shown in the figure. In test tube 1, she put one tablespoon of boiled rice and in test tube 2, she put one tablespoon of boiled rice after chewing it for 3-5 minutes. Then she added 3-4 mL of water in both the test tubes. Thereafter, she poured 2-3 drops of iodine solution in each of the test tubes. Which of the following would be the expected observation by Ridhima?

Colour changes to blue-black in test tube 1 as rice is rich in starch.

Colour changes to blue-black in test tube 2 as saliva breaks down the starch into sugars.

Colour changes to blue-black in both the test tubes.

Colour does not change in either of the test tubes.

Refer to the given diagram which shows various parts of human digestive system labelled as I, II, III, IV and V. Identify the organs and select the incorrect statement regarding them.

Organ-I is involved in the absorption of water from food.

Organ-V is involved in storage of bile not its production.

Organ-II secretes digestive juice which contains mucus, hydrochloric acid and digestive enzymes.

Organ-IV is the largest gland of the body.

Refer to the given diagram of stomach of ruminant mammal with its parts labelled as P, Q, R and S and select the correct option.

The part labelled Q is true stomach.

The parts labelled P, Q, R and S are called reticulum, rumen, abomasum and omasum, respectively.

Food is completely digested in chambers P and R.

Digestion of cellulose takes place in P, S and R

Fill in the blanks with the correct combination of words. The role of L in the M is to N the surface area for the rapid O of P.

L-villi, M-small intestine, N-increase, O-absorption, P-digested food

L-villi, M-large intestine, N-decrease, O-absorption, P-digested food

L-cilia, M-small intestine, N-increase, O-assimilation, P-digested food

L-villi, M-small intestine, N-increase, O-assimilation, P-digested food

Match Column-I with Column-II and select the correct option from the codes given below.

(a) - (ii), (b) - (iii), (c) - (i), (d) - (iv)

(a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)

(a) - (i), (b) - (ii), (c) - (iii), (d) - (iv)

(a) - (iv), (b) - (ii), (c) - (iii), (d) - (i)

Identify P, Q, R, S and T in the given figure and select the correct statement regarding them.

Many bacteria that enter out body along with the food get killed in the organ R.

S is the organ where starch is broken down into sugar by the action of saliva.

Digestive juice secreted by Q gets stored in P.

Organ T absorbs water and also some salts from the undigested food materials.

Read the given statements and select the option that correctly fills the blanks in any two of them. (i) ______ are the tiny out-growths on the inner surface of small intestine. (ii) Mucus, hydrochloric acid and digestive juice are secreted by ______. (iii) Length of small intestine in an adult human being is about ______. (iv) ______ mainly absorbs water from the undigested food.

(i) small intestine (iii) large intestine

Read the given paragraph and answer the question that follows. In human beings, four different types of teeth are present. X type of teeth is used for biting and cutting, Y type of teeth is used for crushing and grinding while Z type of teeth is used for tearing the food. Select the option that correctly identifies X, Y and Z.

X - Incisor, Y - Molar, Z - Canine

X - Incisor, Y - Canine, Z - Molar

X - Canine, Y - Incisor, Z - Molar

X - Canine, Y - Molar, Z - Incisor

Nutrition in animals does not include -

(3) utilization of digested food in the body

Read the given statements. (i) Paramecium has stiff hair-like structures called ______. (ii) Hydra has a number of ___ around its mouth, that entangle small aquatic animals and kill them with their _______ cells. (iii) Frog uses its long, sticky ______ to catch insects. (iv) Mosquito sucks up the blood of animals with its _______. Select the option which correctly fills the blanks in any two of these statements.

(3) (i) – cilia (ii) tentacles, stinging

(1) (ii) cilia, absorptive (iii) forelimbs

(2) (i) tentacles (iv) feeding tube

(4) (iii) – tongue; (pseudopodia)

Varun got his gall bladder removed surgically as he was diagnosed with stone in his gall bladder. Which of the following problems is Varun most likely to face after surgery?

Varun would not be able to digest fats properly because gall bladder stores bile juice which helps in emulsification of fats.

Varun would not be able to digest carbohydrates and proteins properly because gall bladder stores bile which consists of amylase and pepsin enzymes.

Varun would not be able to digest fats properly because gall bladder secretes bile juice which helps in digestion of fats.

Varun would not be able to absorb vitamin B and C properly because gall bladder secretes bile which helps in absorption of these vitamins.

Nutrition in Animals

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Nutrition in Animals

The total number of incisors in our jaws is -

Peristaltic movement helps in the -

Hydrochloric acid is secreted in the -

Which of the following is not a gland?

The enzyme which converts starch into maltose -

Digested food is mainly absorbed in the -

Absorption of water from undigested food mainly occurs in -

Proteins are ultimately converted to -

Undigested food is thrown out through the -

Which enzyme digests fats?

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