UPSC Mains BOTANY-PAPER-II 2020

23 Questions • 300 Marks • With Detailed Model Answers

1
10 Marksmedium
Applications of probes in Southern blotting.
BiologyGeneticsBiotechnology
2
10 Marksmedium
Nuclear pore complex and its functions.
BiologyCell Biology
3
10 Marksmedium
Structure and behaviour of B-chromosomes.
BiologyGenetics
4
10 Marksmedium
Why are overlapping genes important? Discuss.
BiologyGenetics
5
10 Marksmedium
Describe Chi-square test and its applications in genetic study.
BiologyStatisticsGenetics
6
15 Marksmedium
Discuss major steps in signal transduction.
BiologyCell Biology
7
8 Marksmedium
Male sterility
BiologyPlant ScienceGenetics
8
7 Marksmedium
Polyploidy in plant breeding
BiologyPlant ScienceGenetics
9
20 Marksmedium
Transgenic technology is a breakthrough innovation. Justify with examples.
BiologyBiotechnologyGenetics
10
15 Markshard
Briefly describe two theories of Chiasma formation. Discuss whether Chiasmata are the cause or consequence of crossing-over.
BiologyGenetics
11
15 Marksmedium
What is Antisense RNA ? Explain its applications and describe the catalytic activity of RNA.
BiologyMolecular BiologyGenetics
12
20 Markshard
Does Z-DNA play a regulatory role? Discuss critically.
BiologyMolecular BiologyGenetics
13
15 Marksmedium
Explain the mode of biogenesis of peroxisomes and discuss their functions.
BiologyCell Biology
14
15 Marksmedium
Name the phyto-geographical regions of India. Which are the dominant flora of the region representing the west coast of India from Kanyakumari to Satpura ranges in Gujarat?
BotanyGeographyEnvironment
15
20 Marksmedium
Cell cycle is an ordered series of events leading to cell replication.
BiologyCell Biology
16
10 Marksmedium
Climacteric fruits and their advantage to fruit growers.
BotanyAgriculturePlant Science
17
10 Marksmedium
Metabolic energy requirement for uptake of sucrose in apoplastic pathway.
BotanyPlant SciencePhysiology
18
10 Marksmedium
Cyanide-resistant respiration in plants.
BotanyPlant SciencePhysiology
19
10 Markshard
Can Intellectual Property Rights protect and safeguard farmers' rights and interests?
AgricultureLawEconomics
20
10 Marksmedium
What are the causes of the rise in mean atmospheric temperature and how will it influence the climate of a region?
EnvironmentGeographyScience
21
15 Marksmedium
Carboxylation and oxygenation compete to decrease the efficiency of photosynthesis. Discuss.
BotanyPlant SciencePhysiology
22
15 Marksmedium
What is drought escape ? Discuss different strategies adopted by plants for drought resistance.
BotanyPlant ScienceEnvironment
23
20 Marksmedium
What is Clock hypothesis ? Justify the importance of main photoreceptor and photoperiodic induction in photoperiodism.
BotanyPlant SciencePhysiology