Consider the following pairs regarding the digestive system:
1. Villi - Increase surface area for absorption in the large intestine
2. Assimilation - Process of using absorbed substances to build complex molecules
3. Large Intestine - Main site for absorption of nutrients
4. Egestion - Elimination of fecal matter through the anus
How many pairs given above are correctly matched?
Consider the following statements regarding the digestion in grass-eating animals and amoeba:
1. Ruminants like cows and buffaloes have a specialized stomach chamber called the rumen, where grass undergoes partial digestion forming a substance known as cud.
2. In amoeba, food is engulfed by extending finger-like projections called pseudopodia, and digestion occurs inside a food vacuole.
3. The caecum in horses and rabbits is involved in the digestion of cellulose, aided by specific bacteria.
Which of the statements given above is/are correct?
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Consider the following pairs:
1. Esophagus: Moves food from the mouth to the stomach through rhythmic contractions.
2. Stomach: Secretes insulin to regulate blood sugar levels.
3. Liver: Secretes bile juice necessary for the digestion of fats.
4. Small Intestine: Produces hydrochloric acid for digestion.
How many pairs given above are correctly matched?
Consider the following pairs related to the digestive systems of starfish and humans:
1. Starfish: Extends its stomach to externally digest food.
2. Human: Digestion begins in the stomach.
3. Starfish: Has a complete alimentary canal similar to humans.
4. Human: Teeth are used for mechanical digestion.
How many pairs given above are correctly matched?
Consider the following pairs related to the digestion process in various animals:
1. Rumen: Initial chamber in ruminants for cellulose digestion
2. Caecum: Structure in rabbits for digestion of cellulose
3. Pseudopodia: Projections used by Amoeba to capture food
4. Cud: Final stage of digestion in ruminants
How many pairs given above are correctly matched?
What is the primary function of the mucus produced in the inner lining of the stomach?
Consider the following statements:
Statement-I:
Starfish feed on animals with hard calcium carbonate shells. It opens the shell and extends its stomach out through its mouth. The soft animal inside the shell is then eaten. After feeding, the stomach retracts, and digestion occurs inside the body.
Statement-II:
As food moves through each part of the digestive system, it undergoes digestion. Digestive juices, secreted by the stomach, small intestine, and glands (salivary glands, liver, pancreas), help break down complex food substances into simpler ones. The digestive tract along with glands form the complete digestive system, working together to break down and absorb nutrients.
Which one of the following is correct in respect of the above statements?
Consider the following statements regarding animal feeding methods:
1. Bees and hummingbirds utilize a mode of feeding that involves sucking nectar from flowers.
2. Snakes, such as pythons, use the method of chewing to break down their prey before swallowing.
3. Aquatic animals can employ filter feeding to consume small particles suspended in water.
Which of the statements given above is/are correct?
How do bees and hummingbirds primarily obtain their food?
Consider the following statements regarding the human digestive system:
1. The movement of food in the oesophagus is facilitated by a process known as peristalsis, which involves rhythmic contractions of its walls.
2. The stomach's hydrochloric acid not only aids in digestion but also plays a crucial role in the absorption of nutrients.
3. Bile juice, secreted by the liver and stored in the gall bladder, is essential for the digestion of proteins in the small intestine.
Which of the statements given above is/are correct?