Question

answer 26 and 27 briefly and correct.

Answer 1

A - plumule
C - radicle
D - cotyledon
B - testa

I - will pass through F1
II - will pass through lens without changing direction
III - will pass through F1

optical centre is the point where those dotted line and principal axis meet, in the diagram

Answer 2

26) A= Plumule
B= testa
C = radical
D = cotyledon

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