The generative cell of a two-celled pollen divides in the pollen tube but not in a three-celled pollen. Give reasons.
The generative cell of a two-celled pollen divides in the pollen tube but not in a three-celled pollen. Give reasons.
In over $66$ percent of angiosperms, pollen grains are shed at this 2 celled stage. Vegetative cell and generative cell.
In remaining species, generative cell divides mitotically to give rise to the two male gemetes before pollen grains are fixed. Vegetative cell and two male gametes are in $3$ -celled stage.
In $3$ celled stage, pollen tube germinate on stigma and are produced from a germpore. The material of pollen grain comes to pollen tube. Pollen tube proceeds in tissue of stigma with growth.
Similar Questions
Through which route the pollen tube enters the ovule
Through which route the pollen tube enters the ovule
Pollen pistil interaction is
Pollen pistil interaction is
$A$ : Initial growth of pollen tube takes place on expenditure of food present in the stigma and style.
$R$ : Pollen tube travels intracellularly and chemotactically.
$A$ : Initial growth of pollen tube takes place on expenditure of food present in the stigma and style.
$R$ : Pollen tube travels intracellularly and chemotactically.
In the diagram given below, show the path of a pollen tube from the pollen on the stigma into the embryo sac. Name the components of egg apparatus.
In the diagram given below, show the path of a pollen tube from the pollen on the stigma into the embryo sac. Name the components of egg apparatus.
Describe pollen-pistil interaction
Describe pollen-pistil interaction