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

______stimulates RBC production.

Explain Oogenesis with diagram.

Distinguish between human sperm and ovum.

Give the name of endocrine gland which is prominert at birth but gets gradually atrophied in adult stage.

Lever mechanism of pollination is observed in

1. Salvia
2. Jasmine
3. Bougainvillea
4. Butea

With the help of a suitable example, explain protandry.

Enlist advantages and disadvantages of cross pollination

Add a note on pollination mechanism in Salvia.

Give the floral adaptations for anemophily.

The catecholamines are secreted by _________.

Complete the following chart and rewrite.

                                       (Or)

Explain outbreeding devices in angiospermic plants.

Select and write the most appropriate answer from the given alternatives for the following subquestion: 

A versatile anther is an adaptation for _______ type of pollination. 

In bisexual flowers, maturation of gynoecium before androecium is known as ______.

Very short answer type question:

What is hydrophily?

Short answer question

Explain how the adrenal medulla and sympathetic nervous system function as a closely integrated system.

Describe in brief, an account of disorders of the adrenal gland.

At which stage pollen grains are shed from the anther in Angiosperms?

Mention various adaptations for wind pollination.

What are the different adaptations shown by bird-pollinated flowers?

Explain water pollination in detail with its types.