Transport of food, water and minerals - class-XI
Description: transport of food, water and minerals | |
Number of Questions: 25 | |
Created by: Sangita Pandit | |
Tags: transportation - the circulatory system botany plant physiology biology plant biology transport in plants |
The earliest undoubled vascular plants are found in the rocks of ______________.
Choose the correct answer from the alternatives given.
Minerals enter a plant mainly by:
Which of the tissue is more important for translocation of sucrose?
The cohesion transpiration pull theory operates only in
In plants the translocation of organic solutes take place through
Dendrograph was discovered by
A rising column of water does not break its connection in the xylem vessels, despite negative pressure or tension due to
Which one explains ascent of sap ?
Most widely accepted theory of carbohydrate translocation is
Munch hypothesis is based on translocation of food due to
Mass flow hypothesis was first described by ___________.
Presence of bicollateral vascular bundle provides evidence that conduction of food takes place through the
According to Dixon and Jolly, cohesive force of water molecules is of the magnitude of ...............
Which one is against the theory of ascent of sap by Dixon and Joly?
Which of the following is appropriate for mass flow hypothesis?
Cohesion transpiration pull theory of ascent of sap was proposed by
Match the lists and find the correct option
LIST I | LIST II | ||
---|---|---|---|
A. | Henry Dixon | 1. | Bioelectric response |
B. | Slatyer and Taylor | 2. | Cohesion tension theory |
C. | Levitt | 3. | Active proton concept |
D. | J. C. Bose | 4. | Water potential |
5. | Term physiology |
Mass flow hypothesis was put forward by
Choose the correct answers from the alternatives given.
An example of selectively permeable membrane is
According to mass flow hypothesis
(a) Sucrose is moved into the companion cells and then into the sieve tube by passive transport.
(b) Inside the phloem, an osmotic pressure gradient is generated that facilitates the mass movement in the phloem.
(c) Water in the adjacent xylem moves into the phloem by active process
Which of the following is related with transfer of food material?
Leaf photosynthates are transported to other parts of higher plants through
By many evidences, it can be known that the downward movement of food takes place through
How many of the following features are related to Dixon and Jolly model of water transport in plants?
a. Cohesion between water molecules
b. Transpiration pull
c. Pushing of water by negative root pressure
d. Surface tension
e. Pushing of water by positive root pressure.
Bulk flow or mass flow.