Unisexuality of flowers prevents

autogamy, but not geitonogamy

Both geitonogamy and xenogamy

geitonogamy, but not xenogamy

autogamy and geitonogamy

Solution

autogamy, but not geitonogamy

The transfer of pollen from the anther to stigma is called pollination. Autogamy also called self-pollination involves the transfer of pollen grains on one flower to the stigma of the same flower. Self-pollination occurs only in bisexual or hermaphrodite flowers.
Geitonogamy involves the transfer of pollen grains from a male flower to the stigma of the female flower of the same plant. Thus, geitonogamy operates only in monoecious plants ie, the plants having male and female flowers on different places.
Allogamy or xenogamy knew as cross-pollination involves the transfer of pollen grains of the male flower to the stigma of the gentically different female flower. It takes place via, various agencies like wind, water, insects etc.

Some More Questions From Sexual Reproduction in flowering Plants Chapter

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

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Sexual Reproduction In Flowering Plants

Unisexuality of flowers prevents

autogamy, but not geitonogamy

Both geitonogamy and xenogamy

geitonogamy, but not xenogamy

autogamy and geitonogamy

Some More Questions From Sexual Reproduction in flowering Plants Chapter

Simultaneous meiotic division of microspore mother cells leads to :

The fertilization occurs in the :

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

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Sexual Reproduction In Flowering Plants

Unisexuality of flowers prevents autogamy, but not geitonogamy Both geitonogamy and xenogamy geitonogamy, but not xenogamy autogamy and geitonogamy

Some More Questions From Sexual Reproduction in flowering Plants Chapter

Simultaneous meiotic division of microspore mother cells leads to :

The fertilization occurs in the :

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

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Unisexuality of flowers prevents

autogamy, but not geitonogamy

Both geitonogamy and xenogamy

geitonogamy, but not xenogamy

autogamy and geitonogamy