HSC Science (General) इयत्ता १२ वी - Maharashtra State Board Question Bank Solutions for Biology

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 ______.

Which of the following is a hormone-releasing contraceptive?

Following are the diagrams of entry of pollen tube into ovule. Identify the type A and B.

Match the columns :

Name any two birth control measures which have high chances of failure.

The diagram represents a surgical sterilization method in males. Study the same and answer the questions that follow :

1. Give the name of the surgical method represented in the diagram.
2. Which part is ligated or cut?
3. Name the corresponding surgical method conducted in females.

The technique used to block the passage of sperm in male is______.

Endosperm of angiosperm is __________.

(A) haploid

(B) diploid

(C) triploid

(D) tetraploid

Describe the formation of helobial endosperm

Sketch and Label the 'Structure of HIV'.

‘HAART’ is suggested for the treatment of __________

(A) malaria

(B) cancer

(C) AIDS

(D) high chloesterol level