Which of the following conditions would prevent seed formation in a flowering plant even after pollination has occurred?
Failure of gamete fusion during fertilisation.
Pollination only transfers pollen grains to the stigma. After this, the pollen tube carries the male gamete to the ovule, where it must fuse with the egg cell (fertilisation) to form the zygote.
The zygote develops into the embryo and the fertilised ovule develops into the seed. If the male and female gametes fail to fuse, no zygote is formed, so the ovule cannot become a seed even though pollination has occurred.
Chlorophyll in leaf cells concerns photosynthesis, petal pigments and nectar only help attract pollinators; none of these directly stops a seed from forming once pollination has taken place.
Hence, Failure of gamete fusion during fertilisation.
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Important Questions from Reproduction
Cells of the tapetum possess dense cytoplasm and generally have ________.
Human chorionic gonadotropin:
Zygotes do not undergo reduction division immediately. They produce a multicellular body called a -
Which of the following organisms does NOT show asexual reproduction by means of fission?
The pollen needs to be transferred from the stamen to the stigma. If this transfer of pollen occurs in the same flower, it is referred to as __________ . On the other hand, if the pollen is transferred from one flower to another, it is known as ______
