Which one of the following statements is wrong?
When pollen is shed at twocelled stage, double fertilization does not take place.
Vegetative cell is larger than generative cell.
Pollen grains in some plants remain viable for months.
Intine is made up of cellulose and pectin.
Describe internal structure of anther by mentioning about typical stamen.
Examine the figure given below and select the right option giving all the four parts $a, b, c$ and $d.$ Correctly identify
$a\quad \;b\quad\;c\quad\;d$
First three layers of microsporangium which does the function of protection are
How many pollen grains are formed from $10$ microspore mother cells by meiosis
What is the function of germ pore?