| 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. |
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.
Correct Answer: A
Solution :
In plant 1, pollen grains must have been carried from some another plant bringing about pollination (cross-pollination) and fertilisation resulting in the production of seeds. In plant 2, both male and female reproductive parts are available, still the plant did not produce seeds. This shows that self-pollination cannot occur in this plant and cross-pollination could not occur due to the presence of paper bag tied to it. In plant 3, there was only carpel left in the flower bud which was covered with paper bag, so there was no chance of pollination or fertilization.
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