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प्रश्न
In angiosperms, the pollen germinates to produce a pollen tube that carries two gametes. What is the purpose of carrying two gametes when a single gamete can fertilize the egg?
उत्तर
In angiosperms, one sperm cell fuses with the egg cell to form the zygote, while the other fuses with the two polar nuclei form the endosperm which nourishes the developing embryo.
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संबंधित प्रश्न
Ovulation is induced by a hormone called __________.
Define spermiation.
The male sex hormone testosterone is secreted from ____________.
The secondary oocyte enter into the fallopian tube through the ______.
How many sperms are formed from a secondary spermatocyte?
At the time of organogenesis, genes regulate the process at different levels and at different time due to ______.
Which of the following are called dual gland?
Aquatic animals in which fertilisation occurs in water are said to be
Human milk differs from cow's milk because human milk contains:
Meiotic division of the secondary oocyte completed ______.
