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प्रश्न
If one pollen grain produces two male gametes, how many pollen grains are needed to fertilize 10 ovules?
उत्तर
One sperm fuses with the egg and forms a diploid zygote. So 10 pollen grains are needed to fertilize 10 ovules.
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संबंधित प्रश्न
First meiotic division is observed in ____________.
Gray crescent is the area ______.
Besides activating the egg another role of a sperm is to carry ______ to egg.
At what stage of life is oogenesis initiated in a human female?
Read the following and answer from given below:
Oogenesis is the process of the formation of an ovum in the ovaries. It consists of three phases: multiplication, growth, and maturation. Oogenesis is controlled by hormones GnRH, LH, FSH. GnRH secreted by the hypothalamus stimulates the anterior lobe of the pituitary gland to secrete LH and FSH.
Which cell division is involved in the formation of secondary oocytes?
3-celled male gamete develops in:
If for a species 2n = 16, then during Ist prophase and IInd prophase of the meiotic division of a cell, how many tetrads and diads will be formed:
Capacitation refers to changes in the ______.
What is the difference between a primary oocyte and a secondary oocyte?
Answer the following:
How many primary spermatocytes and oocytes are required for the formation of 100 spermatozoa and ova?
