Questions and Answers

Accumulation of cells and formation of a bud at the site of amputation is A. Morphallaxis B. Reparative bud C. Blastema D. Both A and B

According to the modern theory of stomatal opening proposed by Levitt, the pH of guard cells can rise due to A. CO2 assimilation by guard cells only B. Active efflux of H+ ions by guard cells C. Conversion of starch into PEP D. Active uptake of K+ in guard cells

An ecosystem undergoes a sudden drastic change that now favors organisms with an extreme phenotype. Which one of the following is true for such an ecosystem? A. Genetic drift B. Founder effect C. Artificial selection D. Disruptive selection E. Directional selection

Abnormal/anomalous secondary growth occurs in (a) Dracaena (b) Ginger (c) Wheat (d) Sunflower

According to five kingdom system blue-green algae belong to: a) Metaphyta b) Monera c) Protista d) Algae

Adenosine monophosphate is a A) Nucleoside of DNA B) Nucleotide of DNA C) Nucleoside of RNA D) Nucleotide of RNA

Active transport of ions by a cell requires A) High temperature B) Low temperature C) Alkaline pH D) ATP

According to Susruta Samhita, Virudha consisted of A. Flowering plants. B. Shrubs. C. Osadhi. D. Jangama.

A bacterial cell undergoes binary fission every twenty minutes. Starting with a single bacterium, how many bacteria will form after 3 hours? a. 128 b. 256 c. 512 d. 1024

Advantage of cleistogamy is A. Higher genetic variability. B. More vigorous offspring. C. No dependence on pollinators. D. Vivipary