In hypertonic solution, the water potential of a cell
Options
(a) decreases (b) increases (c) first increases and then decreases (d) doesn’t change
Correct Answer:
decreases
Explanation:
No explanation available. Be the first to […]
In cockroach, the ootheca is formed by the secretion of
Options
(a) phallic gland (b) collaterial gland (c) mushroom gland (d) conglobate gland
Correct Answer:
collaterial gland
Explanation:
No explanation available. Be the first […]
In cell cycle, during which phase, chromosomes are arranged in equatorial plate?
Options
(a) telophase (b) prophase (c) metaphase (d) anaphase
Correct Answer:
metaphase
Explanation:
No explanation available. Be the first to write the […]
In C₄- plants, the carbon dioxide fixation occurs in
Options
(a) guard cells (b) spongy cells (c) palisade cells (d) bundle sheath cells
Correct Answer:
bundle sheath cells
Explanation:
In C₄-plants, bundle sheath chloroplast […]
In C₄ plants, the bundle sheath cells
Options
(a) have thin walls to facilitate gaseous exchange (b) have large intercellular spaces (c) are rich in PEP carboxylase (d) have a high density of chloroplasts
In bacterial photosynthesis, photosystem involved is/are
Options
(a) Only PS-I (b) Only PS-II (c) Both PS-I and PS-II (d) Either PS-I or PS-II
Correct Answer:
Either PS-I or PS-II
Explanation:
In bacteria only one […]
In angiosperms each microspore mother cell undergoing meiosis gives rise to a
Options
(a) diad (b) triad (c) tetrad (d) four diploid cells
Correct Answer:
tetrad
Explanation:
In angiosperms, microspore mother cell undergoes meiosis […]
In an experiment demonstrating the evolution of oxygen in Hydrilla. Sodium bicarbonate is added to water in the experimental setup. What would happen if all other conditions are favourable?
Options
(a) amount of oxygen […]
In a typical eukaryotic cell cycle, Gap 1, synthesis and Gap 2 are the three phases included in the
Options
(a) prophase (b) metaphase (c) anaphase (d) interphase
Correct Answer:
interphase
Explanation:
No explanation […]
In a mammalian cell, the longest and the most active phase of the cell cycle is
Options
(a) S phase (b) G₁ phase (c) G₂ phase (d) M phase
Correct Answer:
S phase
Explanation: […]
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