Science (English Medium) इयत्ता ११ - CBSE Question Bank Solutions for Biology

Match the abnormal conditions given in Column A with their explanations given in Column B and Choose the correct option

What is the procedure advised for the correction of extreme renal failure? Give a brief account of it.

Explain, why a haemodialysing unit called artificial kidney?

Which one of the following is not a disorder of bone?

Which tissue is afflicted by Myasthenia gravis? What is the underlying cause?

In old age, people often suffer from stiff and inflamed joints. What is this condition called? What are the possible reasons for these symptoms?

Write a few lines about Gout.

Thymosin is responsible for ______.

Which of the following organs in mammals does not consist of a central incalcium balance in the human body?

Name the hormone that helps in cell-mediated immunity.

State whether true or false:

B-lymphocytes provide cell-mediated immunity.

Old people have weak immune system. What could be the reason?

Which one of the plant growth regulators would you use if you are asked to:

Induce rooting in a twig

Which one of the plant growth regulators would you use if you are asked to:

Quickly ripen a fruit

Which one of the plant growth regulators would you use if you are asked to:

Delay leaf senescence

Which one of the plant growth regulators would you use if you are asked to:

Induce growth in axillary buds

Which one of the plant growth regulators would you use if you are asked to:

'Bolt' a rosette plant

List the hormones secreted by the following:

Thymus

Write a short note on the function of the following hormone:

Thymosins

Write a note on the economic importance of gymnosperms.