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Sexual Reproduction In Flowering Plants

Question
CBSEENBI12003117
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Ubisch bodies are present in

  • pollen tube

  • pollen grain

  • microspore

  • tapetum

Solution

D.

tapetum

Tapetum is the innermost layer of another wall which surrounds the sporogenous tissue. These cells are nutritive in function. also, ubisch bodies are present that helps in the formation of microspore wall or exine of pollen grains.

Pollen grain (microspore) is a round haploid structure from which gametophyte is developed.

Pollen tube helps in carrying male gametes to female gametes for fertilisation.

Some More Questions From Sexual Reproduction in flowering Plants Chapter

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

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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