61.
Acell placed in a strong salt solution will shrink because
A
The cytoplasm will be decomposed
B
Mineral salts will break the cell wall
C
Salt will enter the cell
D
Water will move out cell by exosmosis
Answer :
Water will move out cell by exosmosis
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
62.
The Sugarcane plant has
A
Dumb-bell shaped guard cells
B
Pentamerous flowers
C
Reticulate venation
D
Capsular fruits GUTTATION, BLEEDING , ROOT PRESSURE, WILTING
Answer :
Dumb-bell shaped guard cells
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
63.
Potometer woks on the principle of
A
Amount of water absorbed equals the amount transpired
B
Osmotic pressure
C
Root pressure
D
Potential difference between the tip of the tube and that of the plant
Answer :
Amount of water absorbed equals the amount transpired
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
64.
Root pressure can be measured by the instrument
A
Photometer
B
Auxenometer
C
Manometer
D
Barometer
Answer :
Manometer
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
65.
Water in plants is transported by ascent of sap takes place through
A
Cambium
B
Phloem
C
Xylem
D
Epidermis
Answer :
Xylem
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
66.
To initiate cell plasmolysis, the salt concentration must be
A
Isotonic
B
Hypotonic
C
Hypertonic
D
Atonic
Answer :
Hypertonic
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
67.
Which of the following is a gaseous horone
A
Ethylene
B
Cytokinin
C
Both ethylene and auxin
D
Gibberellin
Answer :
Ethylene
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
68.
Hydrodhytes absorb salt and water by
A
Root and root hairs
B
Leaves and roots
C
Roots and stem
D
General epidermis
Answer :
General epidermis
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
69.
The accurate equation for presenting water potential is
A
Ψw = Ψs + Ψp + Ψm
B
Ψs = Ψw + Ψp + Ψm
C
Ψw = Ψs - Ψp - Ψm
D
Ψw = -Ψs - Ψp - Ψm
Answer :
Ψw = Ψs + Ψp + Ψm
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
70.
The water potential and osmotic potential of pure water are
A
zero and zero
B
100 and 100
C
zero and 100
D
100 and zero
Answer :
zero and zero
Discuss Question
No explanation is given for this question. Let's discuss the answer together.