The process by which water is absorbed by solids like colloids causing them to increase in volume is called
Options
(a) Osmosis (b) plasmolysis (c) imbibition (d) diffusion
Correct Answer:
imbibition
Explanation:
No […]
The process by which plasma membrane transports substances out of the cell by enclosure in a vesicle is called
Options
(a) phagocytosis (b) pinocytosis (c) exocytosis (d) endocytosis
Correct Answer:
exocytosis
Explanation:
No […]
The principal pathway of water translocation in angiosperms is
Options
(a) sieve cell (b) sieve tube elements (c) xylem vessel system (d) xylem and phloem
Correct Answer:
xylem vessel system
Explanation:
No explanation […]
The primary structure of protein is made by
Options
(a) hydrogen bonds (b) ionic bonds (c) peptide bonds (d) none of these
Correct Answer:
peptide bonds
Explanation:
No explanation available. Be the first […]
The primary cell wall of plant consists of
Options
(a) cellulose (b) hemicellulose (c) pectin (d) all of these
Correct Answer:
all of these
Explanation:
No explanation available. Be the first to write […]
The plasma membrane of an animal cell is composed of
Options
(a) proteins, lipids and polysaccharides (b) proteins, lipids and dissacharides (c) lipids, proteins and monosaccharides (d) lipids, proteins and oligosaccharides
Correct Answer: […]
The plants face wilting due to use of excessive fertilizers, because of
Options
(a) exosmosis (b) imbibition (c) endosmosis (d) exosmosis & imbibition & endosmosis
Correct Answer:
exosmosis
Explanation:
Plants face wilting due […]
The plant responds to photoperiods due to the presence of
Options
(a) phytochromes (b) stomata (c) enzymes (d) phytohormones
Correct Answer:
phytochromes
Explanation:
Phytochrome is a pigment involved in the perception of photoperiodic […]
The plant hormone controlling fruit ripening is
Options
(a) ethylene (b) kinetin (c) I.A.A. (d) GA
Correct Answer:
ethylene
Explanation:
Ethylene (gaseous hormone) aids in ripening of climacteric fruits and dehiscence of dry […]
The photosynthesis is a process in which
Options
(a) CO₂ is reduced to carbohydrate (b) NADH is reduced to NAD (c) ATP is generated (d) oxidative phosphorylation occurs
Correct Answer:
CO₂ is reduced […]
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