Taylor conducted the experiment to prove
semiconservative mode of chromosome
replication on :
(1) Drosophila melanogaster
(2) E. coli
(3) Vinca rosea
(4) Vicia faba

How many hot spots of biodiversity in the
world have been identified till date by
Norman Myers ?
(1) 34
(2) 43
(3) 17
(4) 25

Conifers are adapated to tolerate extreme
environmental conditions because of :
(1) thick cuticle
(2) presence of vessels
(3) broad hardy leaves
(4) superficial stomata

Select the wrong statement :-
(1) Cyanobacteria lack flagellated cells.
(2) Mycoplasma is a wall-less microorganism
(3) Bacterial cell wall is made up of peptidoglycan.
(4) Pilli and fimbriae are mainly involved in
motility of bacterial cells

The part of nephron involved in active reabsorption
of sodium is :-
(1) Bowman's capsule
(2) Descending limb of Henle's loop
(3) Distal convoluted tubule
(4) Proximal convoluted tubule