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: […]
In a diploid cell, at which stage of cell cycle, the amount of DNA is doubled?
Options
(a) G₁ and G₂ phase (b) G₀ phase (c) S, G₂ and M phase (d) S phase
In a cell DNA are found in
Options
(a) nucleus,mitochondria and plastid (b) nucleus,mitochondria and Golgi (c) mitochondria, Golgi and plastid (d) nucleus, Golgi and plastid
Correct Answer:
nucleus,mitochondria and plastid
Explanation:
No explanation […]
In a cell cycle, DNA replication takes place in
Options
(a) G₁ phase (b) G₂ phase (c) mitotic metaphase (d) S phase
Correct Answer:
S phase
Explanation:
No explanation available. Be the first to […]
In 1831, Robert Brown described
Options
(a) nucleus (b) cell (c) nucleolus (d) dictyosome
Correct Answer:
nucleus
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting […]
If the cell wall of a cell is removed, the remaining portion is called
Options
(a) etioplast (b) aleuroplast (c) amyloplast (d) protoplast
Correct Answer:
protoplast
Explanation:
No explanation available. Be the first to […]
If flowers are cut and dipped in dilute NaCl solution,
Options
(a) transpiration is low (b) endosmosis occurs (c) no bacterial growth takes place (d) absorption of solute inside flower cell takes place
Correct […]
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