Why do some plants have both chasmogamous and cleistogamous flowers?

Why do molluscs have shells?

Why do molluscs have shells?

Why do the veins have valves?

Why do school bags have broad shoulder traps ?

What are chasmogamous flowers? Can cross pollination occur in cleistogamous flowers? Give reasons for your Answer.

Autogamy can occur in a chasmogamous flower if

What are the possible types of pollinates in chasmogamous flowers. Give reasons.

Why do weeds threaten crop plants?

Suppose there were plants that had a high concentration of Chlorophyll-b, but lacked chlorophyll-a, would it carry out photosynthesis? Then why do plants have chlorophyll-b and other accessory pigments?

Why do stable nuclei never have more protons than neutrons?