Subject :NSO Class : Class 7
The following investigation was carried out using flower buds growing on three plants of the same species :
Plant 1 – The anthers were carefully removed and the buds left open to the air.
Plant 2 – The anthers were left untouched and a paper bag was tied tightly around each bud.
Plant 3 – The anthers were carefully removed and a paper bag was tied tightly around each bud.
All flowers were opened normally but only those on plant 1 produced seeds.
What can be inferred from it?
A Only cross-pollination can take place in this plant species.
B Only wind-pollination can take place in this plant species.
C Only insect-pollination can take place in this plant species.
D Both self and cross-pollination can take place in this plant species.
Ans 1:
Class : Class 8
but now the anthers are removed... so the answer is A
Ans 2:
Class : Class 8
There used to be anthers so it is D
Ans 3:
Class : Class 9
So, both forms of pollination can happen. Hence the answer should be D.
Ans 4:
Class : Class 9
yes but they are talking about the species, not that particular plant. It's anthers were removed but it still gave fruit which means the flower is bisexual.
Ans 5:
Class : Class 7
Answer should be D or options should have been framed better.