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Sexual Reproduction In Flowering Plants

Question

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Assertion : Emasculation prevents self- pollination in flowers.
Reason : Emasculation is the removal of anthers from a bisexual flower.

If both assertion and reason are true and reason is the correct explanation of assertion

If both assertion and reason are true but reason is not the correct explanation of assertion

If assertion is true but reason is false

If both assertion and reason are false.

Solution

A.

If both assertion and reason are true and reason is the correct explanation of assertion

Emasculation is the removal of the anthers of a flower in order to prevent self- pollination or the undesirable pollination of neighbouring plants. It is mainly done in plants, by removing the stamens of a flower before they achieve reproductive maturity. It is done in bisexual flowers to prevent self- pollination.

Some More Questions From Sexual Reproduction in flowering Plants Chapter

The female gametophyte of a typical dicot at the time of fertilization is:

Development of embryo from any cell of nucellus is called :

Parthenocarpic fruit is :

The entry of pollen tube into embryo sac through the integuments is termed as :

512 microspores will be formed following meiosis of how many microspore mother cells.

Pollination by water occurs in :

In ................... flowers, the thalamus grows upwards completely enclosing the ovary, and the stamens, petals and sepals are borne above the ovary.

In Calotropis, all the microspores of anther lobe remain united to form

Albuminous seeds store reserve food materials in ....................

Transfer of pollen grains from the anther to the stigma of another flower of same plant is called..............................

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