Water enters from soil into the root hairs due to
Options
(a) turgor pressure of root hair (b) osmotic pressure of root hair (c) suction pressure (d) diffusion pressure
Correct Answer:
suction pressure
Vernalisation is the response due to
Options
(a) high temperature (b) optimum temperature (c) low temperature (d) extreme temperature
Correct Answer:
low temperature
Explanation:
Photoperiodism is the response of plants to the relative […]
Upon stimulation of skeletal muscles calcium is immediately made available for binding to troponin from
Options
(a) blood (b) lymph (c) sarcoplasmic reticulum (d) bone
Correct Answer:
sarcoplasmic reticulum
Explanation:
The sarcoplasmic reticulum […]
Uphill transport is a type of
Options
(a) active transport (b) facilitated diffusion (c) simple diffusion (d) passive transport
Correct Answer:
active transport
Explanation:
Active transport of solute occures against the concentration gradient […]
Unloading of minerals occur at
Options
(a) apical meristem (b) fine vein ending (c) fruits (d) apical meristem & fine vein ending & fruits
Correct Answer:
apical meristem & fine vein ending & […]
Two cells are connected with the help of
Options
(a) plasmodesmata (b) plasma membrane (c) cell wall (d) none of these
Correct Answer:
plasmodesmata
Explanation:
No explanation available. Be the first to write […]
Tunica corpus theory was proposed by
Options
(a) Schmidt (b) Strasburger (c) Nageli (d) Hofmeister
Correct Answer:
Schmidt
Explanation:
This theory was proposed by Schmidt (1924).This theory recognizes only two zones in the […]
Transport of C₄ acid from mesophyll cells to the bundle sheath cell takes place through
Options
(a) cell membrane (b) cell wall (c) plasmodesmata (d) osmosis
Correct Answer:
plasmodesmata
Explanation:
Mesophyll cells and […]
Transpirtation is very important for plants because it helps in
Options
(a) the absorption of water from soil (b) the cooling of leaves at high temperature (c) the movement of water and minerals […]
Translocation of sucrose in plant is done by
Options
(a) phloem (b) xylem (c) parenchyma (d) pericycle
Correct Answer:
phloem
Explanation:
Carbohydrates are translocated in the phloem. Zimmermann have shown that sucrose is […]
2017 Copyright Doctor Dreams Training Academy