Principles and Processes of Biotechnology. — BIO BOTANY STD 12 — Question

Name the movement launched by the people of Mandal village to protect the trees by hugging them.

State any one advantage and one disadvantage of polyploid breeding.

What are diaspores?

Why plant Breeding is carried out by farmers and scientists?

Classify gene interactions with an example.

Which is the first link in a grazing food chain and a detritus food chain?

Position of essential whorls and inhibition of autogamy in Gloriosa superba – comment.

Golden rice is a bio-fortified rice developed by rDNA technology. It differes from its parental strain by possessing ‘psy’ gene, ‘crt-1’ gene and ‘lye’ gene which are responsible for beta – carotene synthesis.
(a) Name the sources of the above mentioned genes.
(b) Which disease can be controlled / prevented if a person’s diet has golden rice?

Draw and label the structure of a typical pollen grain

Define totipotency.