Animal Kingdom — BIOLOGY STD 11 Science — Question

Which protists show symbiotic relationships? How is this relation carried out?

When a substrate is being metabolised, why does not all the energy that is produced get released in one step? It is released in multiple steps. What is the advantage of stepwise release?

What is cellular respiration? Write any four functions of ATP.

Define the following: Endocrine gland.

Special character of coelenterates is:

1. Polymorphism.
2. Nematocysts.
3. Flame cells.
4. Hermaphroditism.

If one wants to find minerals in the form they are mobilised in the plant, how will the analysis of the exudate help?

1. How are microorganisms like Pseudomonas and Thiobacillus of great significance in the nitrogen cycle?
2. In which form are sulphur and magnesium obtained by plants?

Below is a list of plant fibres. From which part of the plant these are obtained?

1. Coir.
2. Hemp.
3. Cotton.
4. Jute.

During the group study at Vishalthi's home, Anil got a severe pain in his stomach. Vishakha called her mother immediately as she (mother) was a doctor. After diagnosis, stone is found in her kidney. She gave him some medicines and also suggested to drink a lot of water, so that the stone related problem does not arise again.

1. What is the medical term used for the stone in kidney?
2. Way should we drink a lot of water on the regular basis?
3. Name the ions which are involved in the formation of renal stones?
4. What values did vishakha’s mother possess?