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Question

Describe the structure of a typical monosporic embryo sac found in flowering plant.

Prabhat Rajore · Accepted Answer

The single functional mother cell gives rise to female gametophyte or the embryo sac. since only one cell is involved out of four it is called monosporic embryo sac. It divides to form a 8 nucleate and 7 celled embryo sac. the 8 cells that are present are 3 cells that is 1 egg cell and 2 synergids are present at the micropylar end. the synergids and the egg cell together form the egg aparatus. synergids have a speial thickening called filiform apparatus which helps guide the pollen tube into the ovary. @ cells are present at the chalazal end and are called antipodal cells. Three cells are present in the central space and are called polar nuclei.

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Sexual Reproduction In Flowering Plants

Describe the structure of a typical monosporic embryo sac found in flowering plant.

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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