In which year did the last flowering of Neelakurinji $(Strobilanthes \text{ kunthiana})$ occur?

Name the plants which exhibit unusual flowering phenomena.

The male and female reproductive organs of several pteridophytes and gymnosperms are comparable to floral structures of angiosperms. Make an attempt to compare the various reproductive parts of pteridophytes and gymnosperms with reproductive structures of angiosperms.

Pollen grains of many species cause severe allergies and bronchial afflictions in some people,often leading to chronic respiratory disorders such as .....

Choose the correct sequence for the different stages in the life cycle of rice.

Which of the following represents the correct sequence of phases in the life cycle of wheat? [where $J$ - Juvenile phase,$R$ - Reproductive phase,$I$ - Interflowering period,$G$ - Gap phase,$S$ - Senescence,$V$ - Vegetative phase]