1
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
What is the direction of micropyle in anatropous ovule?
A
Upwards
B
Downward
C
Right
D
Left
2
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
In angiosperm all the four microspores of tetrad are covered by a layer which is formed by
A
pectocellulose
B
callose
C
cellulose
D
sporopollenin.
3
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
In angiosperms pollen tube liberate their male gametes into the
A
central cell
B
antipodal cells
C
egg cell
D
synergids.
4
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
Adventive embryony in Citrus is due to
A
nucellus
B
integuments
C
zygotic embryo
D
fertilized egg.

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