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NEET Questions / Botany / Sexual Reproduction in Flowering Plants
If a diploid cell with 46 chromosomes undergoes meiosis, what is the chromosome number of each resulting daughter cell?
46
23
92
11.5
In angiosperms, after fertilization, what structures within the embryo sac represent the haploid, diploid, and triploid stages, respectively?
Synergids, zygote, primary endosperm nucleus
Antipodals, zygote, endosperm
Polar nuclei, embryo, endosperm
Egg cell, zygote, antipodals
Which of the following correctly identifies a haploid, diploid, and triploid structure, respectively, within a fertilized angiosperm embryo sac?
Egg, zygote, endosperm
Degenerating synergids, zygote, primary endosperm cell
Polar nuclei, embryo, endosperm
Antipodal cells, embryo, zygote
In an angiosperm embryo sac, the ploidy level of the zygote, the primary endosperm nucleus, and a synergid (post-fertilization) are, respectively:
n, 2n, 3n
2n, 3n, n
3n, 2n, n
n, 3n, 2n
Why sometimes, even diploid offspring is produced through parthenogenesis?
When offspring is produced without fertilization of diploid egg cell
When offspring is produced through fertilization of diploid egg cell
When offspring is produced without fertilization of haploid egg cell
When offspring is produced through fertilization of haploid egg cell
In embryo sac, , 2, 3, conditions are found respectively in
Egg, antipodal, endosperm
Nucleus, endosperm, egg
Antipodal, zygote, endosperm
Endosperm, nucleus, egg
