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1.Sexual Reproduction in Flowering Plants
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Xenia and metaxenia terms are related with
A
Pollen culture
B
Only endosperm
C
Xylem and phloem
D
Pollen and endosperm
(AIIMS-2002)
Solution
(d)Xenia means direct effect of the pollen grains on the seeds and fruits, outside the embryo is called xenia. Metaxenia is the effect of pollen grain on the testa and fruit wall. Maize is the classical example of xenia and date palm is an example of metaxenia.
Standard 12
Biology
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