Assertion : If pollen mother cells has $42$ chromosomes, the pollen has only $21$ chromosomes.
Reason : Pollens are formed after meiosis in pollen mother cell.
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
If the Assertion is correct but Reason is incorrect.
If both the Assertion and Reason are incorrect.
Haploids can be obtained form
Draw the diagram of a microsporangium and label its wall layers. Write briefly about the wall layers ?
After demonstration of totipotency, a botanist wishes to produce identical plants from an angiosperm by tissue culture. The parts or tissues which are likely to yield haploid embryos are
Complete the following flow chart
Pollen Mother cell $\to $ Pollen tetrad $\to $ Pollen grain $\to $ Vegetative cell
Pollen Mother cell $\to $ Pollen tetrad $\to $ Pollen grain $\to $ ..........