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Sexual Reproduction in Flowering Plants — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYSexual Reproduction in Flowering Plants2 Marks
Question
Differentiate between:
  1. Hypocotyl and coleoptile.
  2. Protandry and protogyny.
✓

Answer

  1.  
S. No.
Hypocotyl
Epicotyl
1.
The portion of the embryonal axis which lies below the cotyledon in a dicot embryo is known as the hypocotyl.
The portion of the embryonal axis which lies above the cotyledon in a dicot embryo is known as the epicotyl.
2.
It terminates with the radicle.
It terminates with the plumule. 
 
  1.  
S. No.
protandry
protogyny
1.
protandry is (botany) the condition of flowers whose male parts mature before the female ones.
protogyny is (botany) the condition of flowers whose female parts mature before the male ones.
2.
 the condition in which an organism begins life as a male and then changes into a female.
the condition in which an organism begins life as a female and then changes into a male.

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