CS Main Exam BOTANY Paper—II

Q. 1 Explain the following 10x5-50
Q. Explain Mitochondria

Q. Explain Extrinsic and Intrinsic proteins

Explain Genetic code

Q. Explain Hybrid vigour

Q. Explain Self-incompatibility.

Q. Distinguish between prokaryotic aiid eukaryotic cell. 15

Q. Discuss briefly the evidence of organic evolution. 15

Q. Describe briefly the various methods of gene transfer. 20

Q. Describe the structure, behaviour and significance of special types of chromosomes.

Q. What is the role of RNA in the origin and evolution of living organisms 20

Q. Describe the method of developing disease and insect resistant varieties through back
cross method of breeding crop varieties. 15
Q. Describe the numerical variation in chromosomes. 15

Q. What is the biochemical and molecular basis of mutations 20

Q. Discuss briefly the mechanism of disease resistance. 15

Q. 5 Explain the following 10x5=50

Q. Explain ATP synthase

Q. Explain Senescence

Q. Explain Conservation of biodiversity

Q. Explain Species based mechanism of invasion

Q. Explain Mainstream forms of renewable energy.

Q. Describe the process of biological nitrogen fixation with special emphasis on denitrogenase.
15+5
Q. Discuss the principal systems of environmental pollution and the reasons thereof. 15

Q. Describe different sub-mitochondrial complexes associated with electron transport chain
of aerobic respiration. 15

Q. Enumerate the salient features of water relations in crop plants.

Q. What are the characteristics of phytochrome induced responses in flowering of higher
plants How do they control flowering

Q. Distinguish between natural and social forests. Discuss in detail the various objectives of
social forestry.

Q. Describe the mechanism of C02 fixation in CAM plants.

Q. Describe any four principal phytogeographical regions of India.

Q. Discuss the various advantages and limitations of phytoremediation.