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shaurya aggarwal from scholars rosary senior secondary school, rohtak
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:

Nimisha Tambe from Narayana vidyalayam, Nagpur
Class : Class 8
but now the anthers are removed... so the answer is A

Ans 2:

Akshay Jha from DPS NERUL, Navi Mumbai
Class : Class 7
Answer should be D or options should have been framed better.

Ans 3:

siddarth from DPS Ecity, Bengaluru
Class : Class 8
There used to be anthers so it is D

Ans 4:

Aishwarya B from Shantiniketan International School , Hyderabad, HYD
Class : Class 9
So, both forms of pollination can happen. Hence the answer should be D.

Ans 5:

Aishwarya B from Shantiniketan International School , Hyderabad, HYD
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.

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