Question by Mital Tripathi (10 F)
A student decides to study the impact of removing certain flower parts on fruit formation in plant species X. He chooses three separate plants that are growing in the same plot under uniform conditions. The data is given in the table below
Which of the following can be inferred from the above data?
i) Anther and stigma are crucial in sexual reprodcution in species X
ii) Pollen grains are probably unable to germinate if they land on other parts of the carpek besides the stigma
iii) Species X is likely to be wind pollinated.
iv) Species X relies completely on cross pollination.
(D) Species X relies completely on cross-pollination.
ReplyDeleteExplanation: The removal of anthers affects fruit formation in plant 1, this implies that species X relies partially on self-pollination. The removal of either anthers or stigmas affects rate of fruit formation significantly. No fruits are observed when the stigmas in plant 2 are removed. This shows that pollen grains are probably unable to germinate if they land on any other part of the carpel besides the stigma. The petals do not seem to play a significant role in facilitating fruit formation. Species X is therefore likely to be wind-pollinated with reduced petals.
- Jhanak Mowar
10D, 20
iv) Species X relies completely on cross pollination.
ReplyDeleteexplanation - from the given data we infer that removing anthers is affecting fruit formation in plant 1 , this means that species X partially depends on self pollination . Removing anther or stigma is significantly affecting fruit formation . No fruit formation takes place after remoal of stigma in plant 2 . This depicts that pollen grains are most likely unable to germinate if they land on any other part of carpel except stigma .the petals do not seem to play an important role in facilitating fruit formation . Hence , Specises X is probably to be wind - pollinated with reduced petals .
- Yuvika Mahajan
class 10 -g