Important Questions Test: Nutrition in Animals - Class 7 MCQ

Digestion in our body helps to break down the complex substances in the food we eat into simpler ones so that our body can use them easily. It's like when you eat a big piece of cake, digestion helps to change it into smaller pieces so your body can take the good parts and use them to make you strong and healthy.

The unused parts of the food are defecated. Option B is correct

Cellulose digestion in ruminants like cattle occurs in the rumen or foregut that harbors bacteria that bring about breakdown of cellulose through fermentation. Here, mechanical digestion also occurs by converting ingested food into cud.
So, the correct answer is option B

Digestion of protein starts in stomach of human digestive tract. When we consume food, digestion is a crucial process that must occur at regular intervals. Digestion necessitates the use of specialised enzymes that act on specific compounds. The enzyme pepsin is responsible for the digestion of proteins.

The incisors are called cutting teeth because they present a sharp cutting edge, adapted for biting the food. They are eight in number, and form the four front teeth in each dental unit.
So, option B is the correct option.

An amoeba, often called amoeboid, is a type of cell or organism which has the ability to alter its shape, primarily by extending and retracting pseudopods. Amoebas do not form a single taxonomic group; instead, they are found in every major lineage of eukaryotic organisms

The small intestine is the main site for digestion and absorption of nutrients in the human digestive system. Here, digestive enzymes from the pancreas and bile from the liver help break down food into simpler molecules. The walls of the small intestine have finger-like projections called villi, which increase the surface area, allowing for maximum nutrient absorption into the bloodstream.