STD 12 - 3. reproductive health — BIOLOGY STD 12 Science — Question

Land mass occupied by forests is about.

Stanley L. Miller conducted experiments before 1953 on prebiotic earth environment using special apparatus. The primary surprising products wereStanley L. Miller conducted experiments before 1953 on prebiotic earth environment using special apparatus. The primary surprising products were:

Function of restriction endonuclease enzyme is:

Which among the following is commonly called withdrawal method?

Which of the following statements is not correct for sickle cell anaemia?

Which one produce androgenic haploids in anther cultures?

A distinct mechanism that usually involves a short segment of DNA with remarkable capacity to move from one location in a chromosome to another. What is this called as?

Assertion : Darwin's finches show a variety of beaks suited for eating large seeds, flying insects and cactus seeds.

Reason : Ancestral seed-eating stock of Darwin's finches radiated out from South American mainland to different geographical areas of the Galapagos Islands, where they found competitor-free new habitats.

In angiosperms embryosac is developed from

The convergent evolution of two species is usually associated with