Animal Kingdom — BIOLOGY STD 11 Science — Question

Why earthworm is called the friend of farmer?

Describe the important characteristics of gymnosperms.

Write short note on the following,
Hypertension.

On an educational trip to Uttaranchal, Ketki and her friends observe that many local people were having swollen necks. Please help Ketki and her friends to find out the solutions to the following questions.

1. Which probable disease are these people suffering from?
2. How is it caused?
3. What effect does this condition have on pregnancy?

Respiratory pathway is believed to be a catabolic pathway. However, nature of TCA cycle is amphibolic. Explain.

What is hypertension? List its causative factors.

Ria went to see the zoo in her town with her parents and saw many wild animals, their food habits, behaviour, etc. She saw that there was a wide variety of animal life in the zoo. But she was amazed to see that the board placed in front of lion cage and monkey place which tells that both were mammals. However, she thought that they were totally different in appearance.

1. Why lions and monkeys are considered to be mammals?
2. Explain the scientific reason to maintain a zoological park.
3. Is there any similar place to see a variety of plants? If any, then name some.
4. What values are shown by Ria?

There are 26 bones in the vertebral column of a human adult. Categorise them on the basis of their location and mention the specific number in each of the categories.

Briefly describe the life cycle phases of fungi.

Explain with examples the categories determined on the basis of nitrogenous excreting substances.