The concept that ‘population tends to increase geometrically while food supply increases arithmetically’ was put forward by
Options
(a) Stuart Mill (b) Chrales Darwin (c) Adam Smith (d) Thomas Malthus
Correct Answer:
Thomas […]
Rhodopsin is found in
Options
(a) rods only (b) whole of retina (c) cones only (d) ganglion cells
Correct Answer:
rods only
Explanation:
The rod cells of the retina contain the pigment rhodopsin […]
Two examples in which the nitrogenous waste are excreted from body in the form of uric acid are
Options
(a) bird and lizards (b) frogs and bony fishes (c) insects and bony fishes […]
Ultrafiltration is determined by
Options
(a) glomerular hydrostatic pressure (b) capsular hydrostatic pressure (c) colloid osmotic pressure of blood (d) all of the above
Correct Answer:
all of the above
Explanation:
No explanation […]
The genes, which remain confined to differential region of Y-chromosome are
Options
(a) mutant genes (b) autosomal genes (c) holandric genes (d) completely sex-linked genes
Correct Answer:
holandric genes
Explanation:
No explanation available. […]
The closely related morphologically similar sympatric populations, but reproductively isolated are designated as
Options
(a) clines (b) clones (c) demes (d) sibling species
Correct Answer:
sibling species
Explanation:
No explanation available. Be the […]
Which of the following fish was introduced in India by foreigners?
Options
(a) Pomphret (b) Mystus singhala (c) Labeo rohita (d) Clarius batrachus
Correct Answer:
Pomphret
Explanation:
No explanation available. Be the first […]
Which of the following is the main factor of desertification
Options
(a) tourism (b) overgrazing (c) irrigated agriculture (d) tourism&overgrazing &irrigated agriculture
Correct Answer:
overgrazing
Explanation:
No explanation available. Be the first to […]
The periderm includes
Options
(a) cork (b) secondary phloem (c) cambium (d) all of these
Correct Answer:
all of these
Explanation:
No explanation available. Be the first to write the explanation for this […]
Excessive elongation of plant stem is due to
Options
(a) IAA (b) cytokinin (c) auxin (d) gibberellin
Correct Answer:
gibberellin
Explanation:
No explanation available. Be the first to write the explanation for this […]
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