Intraspecific incompatability can be overcome by

Which type of association is found in between entomophilous flower and pollinating agent?

Pick the odd one out

The meiocyte of rice has 24 chromosomes. Write the number of chromosomes in its endosperm.

Differentiate between the two cells enclosed in a mature male gametophyte of an angiosperm.

If you squeeze a seed of orange, you might observe many embryos of different sizes. How is it possible? Explain.

Write the cellular contents carried by the pollen tube. How does the pollen tube. How does the pollen tube gain its energy into the embryo sac?

Explain how false, true and parthenocarpic fruits are different from each other. Give one example of each.

Draw the diagram of a microsporangium and label its wall layers. Write briefly about the wall layers.

Explain double fertilisation and trace the post-fertilisation events in sequential order leading to seed formation in a typical dicotyledonous plant.

(a) Describe the process of mega-sporogenesis in angiosperms, until 8-nucleate stage.
(b) Draw the labelled structure of mature embryo sac.