HSC Science (General) १२ वीं कक्षा - Maharashtra State Board Important Questions for Biology

Endosperm of angiosperm is __________.

(A) haploid

(B) diploid

(C) triploid

(D) tetraploid

Describe the formation of helobial endosperm

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. 

Sketch and label ‘structure of a pea flower’.

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

What is vegatative reproduction? Describe any 'three' natural methods of vegetative reproduction with examples?

Very short answer type question:

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

Define Parthenocarpy.

What is adventive polyembryony?

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

Explain water pollination in detail with its types.

Explain various categories of apomixis.

What is geitonogamy?

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

Mention any one example of the anemophilous flower.

Describe any three adaptations in hydrophilous flowers.

Mention any one example of the hydrophilous flower.

Explain following term:

Grafting

Explain following term:

Apomixis