Paper-II
Section A

Write short notes on any four of the following in about 150 words each

Peroxisomes

Amphidiploid

Polygenic inheritance

B-Chromosomes

Tests of significance

Answer the following questions

Describe briefly various structural changes in Chromosomes

Explain the different types of aneuploidy

Answer the following questions

Give a concise account of cytoplasmic inheritance

Explain the biochemical and molecular basis of mutation

Answer the following questions

What is heterosis? Explain the various theories of heterosis

Explain hybridization as a method of plant breeding

Section B

Write short notes on any four of the following in about 150 words each (10 × 4 40)

Water potential

Senescence

Endemism

Acid rain

Testing for seed viability.

Answer the following questions

Explain C4 photosynthetic carbon pathway

Explain the biochemical changes that occur in photo system I and photo system II of photosynthesis

Answer the following questions

What are Auxins? Explain the physiological effects of Auxins

Explain the uses of plant growth substances in Agriculture and Horticulture

Answer the following questions

Explain the concepts and dynamics of Community

Describe the characteristics of different categories of Aquatic ecosystem