For given diagram, choose the correct labelling for ' $X$ ', $Y$ ' and ' $Z$ '.

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Important Questions on Sexual Reproduction in Flowering Plants

EASY

Biology>Reproduction>Sexual Reproduction in Flowering Plants>Post-Fertilization Events in Plants

In apple, the chromosome number of gametes is

17

. What is the chromosome number in its Primary Endosperm Nucleus (PEN)?

MEDIUM

Biology>Reproduction>Sexual Reproduction in Flowering Plants>Post-Fertilization Events in Plants

What is megasporogenesis? Explain the development of eight nucleate embryosac in flowering plants.

HARD

Biology>Reproduction>Sexual Reproduction in Flowering Plants>Post-Fertilization Events in Plants

Describe in brief the embryo formation process in dicotyledonous angiosperm.

MEDIUM

Biology>Reproduction>Sexual Reproduction in Flowering Plants>Post-Fertilization Events in Plants

You are given castor and bean seeds. Which one of the two would you select to observe the endosperm?

HARD

Biology>Reproduction>Sexual Reproduction in Flowering Plants>Post-Fertilization Events in Plants

Identify the correct statements among the following.
(A) Ability of the pistil to recognise the pollen is the result of a dialogue between pollen grain and pistil.
(B) Epicotyl has a shoot apex and a few leaf primordia enclosed in a hollow foliar structure coleoptile.
(C) Seed which germinates immediately after formation will be used as store food for next season.
(D) In coconut, the white kernel is cellular endosperm and liquid is the free nuclear endosperm.

EASY

Biology>Reproduction>Sexual Reproduction in Flowering Plants>Post-Fertilization Events in Plants

Select the correct sequence of Embryogenius in Dicots ?

MEDIUM

Biology>Reproduction>Sexual Reproduction in Flowering Plants>Post-Fertilization Events in Plants

The early stages of embryo development are similar in both dicots and monocots. However, mature embryos have differences. Write two major differences between dicot embryo and monocot embryo.

EASY

Biology>Reproduction>Sexual Reproduction in Flowering Plants>Post-Fertilization Events in Plants

Name the part of the flower which develops into the fruit after fertilization.

MEDIUM

Biology>Reproduction>Sexual Reproduction in Flowering Plants>Post-Fertilization Events in Plants

Draw L.S of an embryo of grass and label its parts.

MEDIUM

Biology>Reproduction>Sexual Reproduction in Flowering Plants>Post-Fertilization Events in Plants

Explain the embryonic development in angiosperm plants. Draw a labelled diagram of the heart-shaped embryo.

EASY

Biology>Reproduction>Sexual Reproduction in Flowering Plants>Post-Fertilization Events in Plants

The development of endosperm precedes that of embryo in plants. Justify.