Question

III. Long Answer Questions.
1. How is nutrition carried out in Hydra and frog?

2. Draw a well-labelled diagram to depict nutrition in Amoeba.

3. Write the role of the small intestine in the human digestive system.

4. What happens to the undigested food in the human body?

5. Write about the role of stomach in the human digestive system

6. Explain the digestive system in the ruminants with a well-labelled diagram.​

Answer 1

Answer:

Hydra is a simple multicellular animal. It has a number of tentacles around its mouth, which are used for ingestion of food. These tentacles entangle small aquatic animals and kill them with their stinging cells. ... Frogs have well developed digestion system in which the digestion of food takes place.

2. answer

3. Your small intestine also breaks down food using enzymes made in your pancreas and bile from your liver. The small intestine is the "work horse"' of digestion -- while food is there, nutrients are absorbed through the walls and into your bloodstream.

4. Different things happen to food as it passes through the digestive system: ... digested food is absorbed into the bloodstream in the small intestine. excess water is absorbed back into the body in the large intestine. any undigested food passes out of the anus as faeces when we go to the toilet.

5. The stomach secretes acid and enzymes that digest food. Ridges of muscle tissue called rugae line the stomach. The stomach muscles contract periodically, churning food to enhance digestion. The pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.

6. anser

Explanation:

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Answer 2

1. Hydra is a multi cellular organism. It has a number of tentacles around his mouth, which are used for ingestion of food. These tentacles entangle small aquatic animals and kill them with their stinging cells......Frogs have well developed digestion system in which the digestion of food takes place.
2. (in the attachment)
3. It absorbs minerals and nutrients from food.
4. It is excreted from the body as waste material from the passage called Anus.
5. The stomach excretes enzymes and acids in the digestion.
6. ( in the attachment)

YOU SHOULD HAVE GIVEN MORE POINTS FOR THIS LONG QUESTION....!!