تمارين أونلاين Bio ||| Chapter3 Lesson3 Reproduction in flowering plants

Examine the opposite figure, then answer :

The embryonic sac is formed from the part no.

Cross pollination is characterized than self pollination through that ……………….

If the number of chromosomes in maize grain endosperm cells is 33 chromosomes, therefore the number of chromosomes in the embryo of this grain is………………………….

If a cell in a flowering plant petal contains 12 chromosomes, therefore the endosperm nucleus contains………………… chromosomes.

A researcher found a wild plant whose flowers were free from petals and carried a lot of stamens, it is possible that the way of pollination in this plant is…………….

From the opposite figure, answer :

The type of pollination that occurs in this flower is ………………….

If the number of chromosomes in the generative nucleus is (X), therefore the number of chromosomes in the male nucleus is………………

If the number of chromosomes in a cell of a pea plant petal is 7 pairs of chromosomes, therefore the number of chromosomes in the embryo of pea seed is…………….

The number of cells that degenerate in the embryonic sac, after the ovule fertilization in the plant is …………………….

The number fertilized ovules in the flower of apricot plant is……………………

The number of pollen grains required for the formation of a pea pod that contains 5 seeds is…………

The number of pollen grains that are required for the fertilization of a mango flower is………………………

We can’t separate the seeds from the fruit manually in ………………..plant.

If an ovary of a flower contains five mature ovules, the least number of pollen grains required to fertilize these ovules is …………………….

The maximum number of microspores that are resulted from the division of 10 spore mother cells in the anther of a flowering plant is……………………..

The maximum number of antipodal cells that may be resulted from the division of 10 spore mother cells in a flowering plant ovary is………………………