Human Reproduction — BIOLOGY STD 12 Science — Question

What do we call the species that can tolerate narrow range of temperature?

The chances of conception are nil during lactational amennorrhea method. Why?

Why EtBr is used in gel electrophoresis inspite of it being highly carcinogenic?

How many molecules of histones are present in a nucleosome?

Name the two most diversity rich zones of India.

Mention the useful as well as harmful drug obtained from the latex of poppy plant.

OR

Name the drug obtained form the latex of Papaver somniferum?

Name the interaction that exists between Cuscula and shoe-flower plant.

OR

State the type of interaction that exists between ticks and dogs.

Define evolutionary biology.

How do monocytes act as a cellular barrier in humans to provide innate immunity?

OR

In what way is monocyte a cellular barrier with reference to immunity?

Write the importance of cryopreservation in conservation of biodiversity.