Biotechnology: Principles and Processes — BIOLOGY STD 12 Science — Question

Arrange the following terms in correct stages of development-Pollen grain, microsporogenous tissue, microspore tetrad, microspore mother cell.

What do you understand by the phenomenon, photonasty?

Which one out of the eurythermal or stenothermal species, is likely to survive increased global temperatures? Give one reason for your answer?

How do the tRNA molecules appear in
(i) two-dimensional, and (ii) three-dimensional views?

Mention the primary aim of the ARTs.

Write the embryonic stage which gets implanted into uterine wall of human female.

What does the density of forests increase?

Name two greenhouse gases produced by anaerobic microbes.

Write the names of the two millet crops in which hybrids have been developed in India.

Define heterozygous.