HSC Science (General) १२ वीं कक्षा - Maharashtra State Board Question Bank Solutions

Describe three devices by which cross-pollination is encouraged in angiosperms by avoiding self- pollination.

Short answer question.

What is colostrum?

Explain any two contrivances or outbreeding devices for pollination.

What is dichogamy?

What does IUCD indicate?

Differentiate between the following:

Spermatogenesis and oogenesis

Answer the following question.

What are the goals of RCH programme.

Draw a well labelled diagram of L.S. human testis.

What is the exact action of birth control pills?

A mother of a one-year-old child wanted to space her second child. Her doctor suggested 'copper- T' Explain its contraceptive action. 

Very short answer type question:

Name the part of gynoecium that determines the compatible nature of pollen grain.

Incompatibility is a natural barrier in the fusion of gametes. How will you explain this statement?

Short answer question.

Comment on any two mechanical contraceptive methods.

Short answer question.

Write a note on tubectomy.

Answer the following question.

Describe the various methods of birth control to avoid pregnancy.

Give an account of pollen pistil interaction in detail.

______ is not a permanent method of birth control.

Identify the permanent birth control method in given diagram.

What is MTP?

A population that exhibits birth rate identical to death rate implies ______.