Draw a labelled sketch of maize grain. Describe its structure.

Important Questions on Sexual Reproduction in Flowering Plants

MEDIUM

12th ICSE

IMPORTANT

I.S.C BIOLOGY FOR'CLASS XII>Chapter 2 - Sexual Reproduction in Flowering Plants>PRACTICE QUESTIONS>Q 3

Describe different types of pollination.

MEDIUM

12th ICSE

IMPORTANT

I.S.C BIOLOGY FOR'CLASS XII>Chapter 2 - Sexual Reproduction in Flowering Plants>PRACTICE QUESTIONS>Q 5

(a) Draw a labelled diagram of longitudinal section of an anatropous ovule. (b) Which cell of the ovule gets transformed into megaspore mother cell?

MEDIUM

12th ICSE

IMPORTANT

I.S.C BIOLOGY FOR'CLASS XII>Chapter 2 - Sexual Reproduction in Flowering Plants>PRACTICE QUESTIONS>Q 6

What is double fertilisation? Describe the process giving its significance. Add a note on post-fertilisation changes leading to the formation of seed.

MEDIUM

12th ICSE

IMPORTANT

I.S.C BIOLOGY FOR'CLASS XII>Chapter 2 - Sexual Reproduction in Flowering Plants>PRACTICE QUESTIONS>Q 7

Draw the embryo sac of a flowering plant and label:
(i) Central cell
(ii) Filiform apparatus
(iii) Synergids.
(iv) Egg cell
(v) Polar nuclei
(vi) Antipodals

MEDIUM

12th ICSE

IMPORTANT

I.S.C BIOLOGY FOR'CLASS XII>Chapter 2 - Sexual Reproduction in Flowering Plants>PRACTICE QUESTIONS>Q 8

Write the mode of pollination in Vallisneria and water lily. Explain the mechanism of pollination in Vallisneria.

MEDIUM

12th ICSE

IMPORTANT

I.S.C BIOLOGY FOR'CLASS XII>Chapter 2 - Sexual Reproduction in Flowering Plants>PRACTICE QUESTIONS>Q 9

How are pea seeds different from castor seeds with respect to endosperm.

MEDIUM

12th ICSE