In the process of osmosis, the volume of solvent
Options
(a) remains the same (b) increases (c) decreases (d) either increases or decreases
Correct Answer:
decreases
Explanation:
Osmosis is a special type of diffusion […]
In the overall process of photosynthesis, the number of CO₂, water, sugar and O₂ molecules utilizing and produced is
Options
(a) 12 (b) 13 (c) 19 (d) 31
Correct Answer:
31
Explanation:
No explanation […]
In the chlorophyta, the reserve food of protein surrounded by starch, form a compact body termed
Options
(a) Paramylum (b) Pyrenoid (c) Volutin (d) Eye spot
Correct Answer:
Pyrenoid
Explanation:
Pyrenoids are the rounded […]
In the cell walls of the guard cells, cellulose microfibrils are oriented
Options
(a) radially (b) transversely (c) tangentially (d) obliquely
Correct Answer:
radially
Explanation:
The radial arrangement of cellulose microfibrils (radial micellation) in […]
In ruminants bacterial action takes place in
Options
(a) rumen (b) omasum (c) abomasum (d) both omasum and abomasum
Correct Answer:
rumen
Explanation:
Both rumen (the largest chamber) and reticulum (smallest part) of ruminant […]
In purple and green bacteria, oxygen is not evolved during photosynthesis because hydrogen donor is
Options
(a) H₂O (b) NH₃ (c) H₂S (d) CH₄
Correct Answer:
H₂S
Explanation:
Purple and green bacteria are photoautotrophic […]
In prokaryotic cells
Options
(a) internal compartments are absent (b) nucleus is absent (c) ribosomes are 70 S (d) all of the above
Correct Answer:
all of the above
Explanation:
No explanation available. Be […]
In prokaryota, ribosomes present is
Options
(a) 70 S (b) 10 S (c) 80 S (d) 20 S
Correct Answer:
70 S
Explanation:
No explanation available. Be the first to write the explanation for […]
In plants, water supply is due to
Options
(a) osmosis (b) imbibition (c) guttation (d) adhesion force
Correct Answer:
osmosis
Explanation:
Root hairs function as tiny osmotic systems. Each root hair has a thin […]
In plants, the induction of flowering, by low temperature treatment, is called
Options
(a) vernalisation (b) photoperiodism (c) pruning (d) cryobiology
Correct Answer:
vernalisation
Explanation:
Photoperiodism is the response of plants to the relative […]
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