What is the fate of the male gametes discharged in the synergid?
Explanation:
In flowering plants, two male gametes are released from the pollen tube. One sperm nucleus fertilizes the egg cell to form the zygote, while the other sperm nucleus fertilizes the central cell (which contains the two polar nuclei) to form the endosperm nucleus. The central cell fertilization typically involves the fusion of one sperm with the polar nuclei, resulting in the triploid endosperm. After fertilization, the synergid degenerates. Thus, one male gamete fuses with the egg and the other fuses with the central cell nuclei, matching option 1.
🧠Did You Know?
Double fertilization is unique to angiosperms and leads to diploid zygote and triploid endosperm formation.
💡 NCERT Memory Line:
Two male gametes: one fuses with egg to form zygote; other fuses with central cell to form endosperm.
Colostrum, the yellowish fluid, secreted by mother
during the initial days of lactation is very essential to impart immunity to the newborn infants because it contains:
A gene locus has two alleles A, a. If the frequency
of dominant allele A is 0.4 then what will be the
frequency of homozygous dominant, heterozygous
and homozygous recessive individuals in the
population?
