How many meiotic divisions are required to produce $200$ and $400$ seeds in pea plants,respectively?

Pollen extract stimulates the formation of fruit in the unpollinated carpel because the extract contains the following hormone:

Choose the correct option ($T$ = true,$F$ = false).
- If zygote develops outside the body,the animal is oviparous.
- In flowering plants,zygote is formed inside the ovule.
- During embryogenesis,embryo shows both cell division and cell differentiation.
- In flowering plants,the ovary develops into the fruit.

The number of meiotic divisions required to produce $40$ seeds in $Capsella$ is:

Through which route does the pollen tube enter the ovule?

Which of the following flowers only once in its life-time?