Home › Maharashtra HSC Class 12 (Science) › biology › Reproduction in Lower and Higher Plants › Double fertilisation, a unique feature of angios…
Double fertilisation, a unique feature of angiosperms, involves
Atwo pollen grains landing on the stigma (typical)
Btwo ovules forming one embryo
Cone sperm fertilising the egg and another fusing with polar nuclei
Dtwo egg cells in one ovule
Answer & Solution
Correct answer: C. one sperm fertilising the egg and another fusing with polar nuclei
1. After pollen reaches the embryo sac, two male gametes are released.
2. One fuses with the egg to form the diploid zygote.
3. The other fuses with the two polar nuclei to form the triploid endosperm — hence 'double' fertilisation.
_Source: Maharashtra Balbharati Std XII Biology, Ch 1 "Reproduction in Lower and Higher Plants" §1.6_
Related questions
In angiosperms, the haploid embryo sac is also calledWind-pollinated flowers usually haveThe phenomenon of two or more embryos developing from one fertilised ovule is calledApomixis isIn a megaspore mother cell, meiosis producesIn a typical anther, the wall layer that nourishes developing pollen grains is theThe triploid endosperm formed in angiosperms is the result of fusion ofPollination by water is called