Class 12 Biology Reproduction Sexual reproduction in Flowering Plants
In an angiospermic plant, endosperm is formed due to fertilization of secondary nucleus but it is absent in some of the seeds viz. pea, bean, phaseolus (moong) etc. It is due to lack of 
(a)
Certain enzymes
(b)
Dicotyledonous hormone
(c)
Growth hormone
(d)
None of the above
Correct answer: (d) 
Solution: In almost all angiosperms, double fertilisation takes place where a triploid endosperm is formed. In a few cases, it is non - endospermous where the entire endosperm is consumed during the development of embryo.

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Similar topics
sexual reproduction in flowering plants
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sexual reproduction in flowering plants
reproduction in organisms
human reproduction
reproductive health
reproduction in organism