In which of these animals, antennal gland or green glands functions as excretory organ
Options
(a) Human being (b) Cockroach (c) Planaria (d) Prawn
Correct Answer:
Prawn
Explanation:
In crustaceans, antennary gland or […]
In the wall of alimentary canal which are/is true sequence from outer to inner
Options
(a) Serosa,longitudinal muscle,mucosa,sub mucosa (b) Mucosa, serosa, long muscle (c) Serosa, long muscle, circular, sub-mucosa, mucosa (d) Serosa, […]
Histamines the inflammation producing substances are produced by which cells of the body?
Options
(a) Collagen fibres (b) Macrophages (c) Mast cells (d) Subtentacular cells
Correct Answer:
Mast cells
Explanation:
Mast cells […]
Haemodialysis helps in the patient having
Options
(a) Uremia (b) Anaemia (c) Diabetes (d) Goitre
Correct Answer:
Uremia
Explanation:
Uremia is a condition of high concentration of urea, uric acid in blood etc. […]
Auxin in plant is not meant for
Options
(a) Cell elongation (b) Fruit ripening (c) Cell division (d) Inhibit the root growth
Correct Answer:
Fruit ripening
Explanation:
Because ethylene is responsible for ripening […]
An excised leaf does not turn yellow if it is induced to root. This is attributed to synthesis in root of or Leaf agins is retarded by
Options
(a) Ethylene (b) Cytokinins (c) […]
Thylakoids in chloroplasts are
Options
(a) interconnected sacs (b) a stack of lamella (c) interconnected tubules (d) place of Calvin cycle
Correct Answer:
interconnected sacs
Explanation:
No explanation available. Be the first to […]
Pellagra is caused due to the deficiency of which vitamin?
Options
(a) vitamin-A (b) vitamin-B₁ (c) vitamin-B₃ (d) vitamin-B₁₁
Correct Answer:
vitamin-B₃
Explanation:
The nicotinic acid or niacin (vitamin B₃) is required for […]
Beet root if kept in cold water anthocyanin does not come out due to plasma membrane
Options
(a) Differentially permeable (b) Impermable to anthocyanins (c) Permeable to anthocyanins (d) Dead
Correct Answer:
Impermable to […]
Radius of a soap bubble is increased from R to 2R. Work done in this process in terms of surface tension S is
Options
(a) 24 πR²S (b) 48 πR²S (c) 12 πR²S (d) […]
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