Sexual Reproduction In Flowering Plants

Question

Compared with the gametophytes of the bryophytes the gametophytes of vascular plants tend to be

larger but to have smaller sex organs

larger and to haver larger sex organs

smaller and to have smaller sex organs

smaller but to have larger sex organs

Solution

smaller and to have smaller sex organs

As we proceed from thallophyta to angiosperms, there is gradual reduction in gametophte with reduced size of sex organs. From thallophyta to angiosperms, there is progressive elaboration of sporophytes.

Phase	Thallophyta	Bryophyta	Pteridophyta	Gymnosprems	Angiosperms
Gametophyte(%)	90	75	50	25	10
Sporophyte(%)	10	25	50	75	90

Some More Questions From Sexual Reproduction in flowering Plants Chapter

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..............................

The...................direct the growth of pollen tube towards egg apparatus by secreting some chemical substances.

A kind of reproduction in which the new individuals are formed without involvement of meiosis and syngamy.

A kind of self-pollination in which the pollens from the anthers of one flower are transferred to the stigma of another flower borne on the same plant.

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Sexual Reproduction In Flowering Plants

Compared with the gametophytes of the bryophytes the gametophytes of vascular plants tend to be

larger but to have smaller sex organs

larger and to haver larger sex organs

smaller and to have smaller sex organs

smaller but to have larger sex organs

Some More Questions From Sexual Reproduction in flowering Plants Chapter

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..............................

The...................direct the growth of pollen tube towards egg apparatus by secreting some chemical substances.

A kind of reproduction in which the new individuals are formed without involvement of meiosis and syngamy.

A kind of self-pollination in which the pollens from the anthers of one flower are transferred to the stigma of another flower borne on the same plant.

Give the term for cross-pollination by wind.

The nutritive layer of anther wall which provides nourishment to the developing microspores.

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Sexual Reproduction In Flowering Plants

Compared with the gametophytes of the bryophytes the gametophytes of vascular plants tend to be larger but to have smaller sex organs larger and to haver larger sex organs smaller and to have smaller sex organs smaller but to have larger sex organs

Some More Questions From Sexual Reproduction in flowering Plants Chapter

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..............................

The...................direct the growth of pollen tube towards egg apparatus by secreting some chemical substances.

A kind of reproduction in which the new individuals are formed without involvement of meiosis and syngamy.

A kind of self-pollination in which the pollens from the anthers of one flower are transferred to the stigma of another flower borne on the same plant.

Give the term for cross-pollination by wind.

The nutritive layer of anther wall which provides nourishment to the developing microspores.

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Compared with the gametophytes of the bryophytes the gametophytes of vascular plants tend to be

larger but to have smaller sex organs

larger and to haver larger sex organs

smaller and to have smaller sex organs

smaller but to have larger sex organs