Flower is intersexual in
Date palm
Cucurbita
Papaya
Hibiscus
When pollen tube enters by integuments, then the process is called
Male gametes in angiosperms are formed by the division of
Which one of the following character causes cross pollination
What is coconut water?
Examine the figures $(A-D)$ given below and select the right option out of $(a -d)$, in which all the four structures $A, B, C$ and $D$ are identified correctly.