Plant Water Relation — BIOLOGY STD 12 Science — Question

How many pollen grains and ovules are likely to be formed in the anther and the ovary of an angiosperm bearing 25 microspore mother cells and 25 megaspore mother cells respectively?

What is synaptic delay?

Which forest is named as the ‘Lungs of the Planet’?

Name the following: Enzyme involved in joining of Okazaki fragments.

Name the following: Name the era when birds began to origin.

State where the signals for parturition arise from, in humans.

Name the Following : Symbiotic N2 fixing microorganisms.

Name any two barriers used by human females for birth control.

Define the following : Parasite

What is meant by "self-pollen"?