Principles of Inheritance and Variation — BIOLOGY STD 12 Science — Question

'Green algae are not likely to be found in the deepest strata of the ocean'. Give atleast one reason.

A mother of one–year old daughter wanted to space her second child. Her doctor suggested CuT. Explain its contraceptive actions.

How is the action of exonuclease different from that of endonuclease?

Name the fungus used in organ transplant. Write the product of this organism and explain its specific use.

Name the states involved in Ganga action plan.

Why do the males suffer more from haemophilia than females?

In a pond, there were 200 frogs. 40 more were born in a year. Calculate the birth rate of the population of frogs in the pond.

Name two freshwater angiosperms that show true hydrophily.

Name the negatively charged and positively charged components of a nucleosome.
OR
Name the positively charged protein around which the negatively charged DNA wrapped.