CSIR NET Life Sciences December 2008 Paper (Part 11 of 14)

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  1. Among the following which molecule has been frequently used for molecular systematics

    1. Insulin

    2. Cytochrome C

    3. Globin

    4. Collagen

  2. Rate of molecular evolution would be least in

    1. Nonsynonymous change in codon

    2. Synonymous change in codon

    3. Flanking regions of genes

    4. Introns of genes

  3. The most probable place where life would have originated

    1. Outer space

    2. Barren rocks

    3. In oceans

    4. Deep hydrotheral vents

  4. In population of 10 million individuals birth rate is 19 per 1000 and death rate is 14 per 1000. Annual rise in population would be

    1. 50, 000

    2. 5, 000

    3. 14, 000

    4. 500, 000

  5. Which of the following curves represents the general relationship between population size (N) and growth rate (dN/dt) for logistically growing population (IFAS Answer 3)

  6. Which factor is least responsible for genetic drift?

    1. Migration

    2. Founder effect

    3. Bottleneck

    4. Restriction of resources

  7. In spite of the prevalence of herbivory, the earth continues to be largely green because

    1. the number of herbivore species is low.

    2. herbivores are very inefficient feeders.

    3. herbivore numbers are kept low by their predators.

    4. herbivory promotes plant growth.

  8. Biomass turnover time is the ratio between biomass and productivity of an ecosystem. Which of the following forests should have highest biomass turnover time?

    1. Tropical dry forests

    2. Tropical wet forests

    3. Temperate deciduous forests

    4. Boreal forests

  9. Smoth movement of bacteria during chemitaxis is due to

    1. Due to tumbling

    2. Phosphorylation of CheY

    3. Movement of H + across plasma membrane

    4. Phosphorylation of Che A

  10. Which statement is least likely to be observed amongst the animals showing extensive parental care

    1. Male polygamous

    2. Sexual dimorphism

    3. Difference in body size of male and female

    4. No investement in selection of mates by females

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