Principles of Ecology. — BIO BOTANY STD 12 — Question

Differentiate between flush end and cohesive end of DNA.

Name the first and second law of Mendel.

What does the term ‘Timber line’ refers to?

Based on temperature prevalence, Raunkiaer classified world’s vegetation into four types. Name them.

What is Albedo effect?

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?

Give the technical terminologies for the following statements.
(а) Autonomous, self-replicating, circular DNA
(b) Molecular scissors
(c) Symmetrical repreated sequence in DNA strands
(d) Mobile genetic elements

Point out the differences between anemophilous flowers and ornithophilous flowers.

Differentiate Aneuploidy from Euploidy.

Define ‘Standing state’ with regard to ecosystem.