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Question

Which of the following is not found in all the seed plants?

A
Alternation of generation
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B
Double fertilization
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C
Conversion of ovule into seeds
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D
Dependent gametophytic generation
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Solution

The correct option is B Double fertilization
Gymnosperms as well as angiosperms are both regarded as seed plants. However, double fertilization is a phenomenon unique to angiosperms. Each pollen grain produces two sperms; one fuses with an egg to form the zygote, and the other fuses with one or more polar nuclei in the female gametophyte.

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