EASY
11th CBSE
IMPORTANT
Earn 100
Osmosis is a special kind of diffusion, in which water diffuses across the cell membrane. The rate and direction of osmosis depend upon both pressure gradient and _____ (concentration gradient/ osmotic potential).
100% studentsanswered this correctly
Important Questions on Transport in Plants
EASY
11th CBSE
IMPORTANT
A flowering plant is planted in an earthen pot and irrigated. Urea is added to make the plant grow faster, but after some time the plant dies. This may be due to an osmotic process called___.
EASY
11th CBSE
IMPORTANT
Absorption of water from soil by dry seeds increases the_____, (diffusion pressure/ imbibition pressure) thus helping seedlings to come out of soil.
EASY
11th CBSE
IMPORTANT
Water moves up against gravity and even for a tree of 20m height, the tip receives water within two hours. The most important physiological phenomenon which is responsible for the upward movement of water is___.
EASY
11th CBSE
IMPORTANT
The plant cell cytoplasm is surrounded by both cell wall and cell membrane. The specific transport of substances mostly occurs across the cell membrane. Is it fully permeable or selectively permeable?
EASY
11th CBSE
IMPORTANT
The C4 plants are twice as efficient as C3 plants in terms of fixing CO2 but lose only _____ (half/full) as much water as C3 plants for the same amount of CO2 fixed.
HARD
11th CBSE
IMPORTANT
In a plant, translocation in xylem is unidirectional while in phloem it is bidirectional. Explain
MEDIUM
11th CBSE
IMPORTANT
Identify the process occurring in I, II and III.
HARD
11th CBSE
IMPORTANT
Given below is a table. Fill in the gaps
| Property | Simple diffusion | Facilitated transport | Active Transport |
| i. Highly selective | ________________ | Yes | ________________ |
| ii. Uphill transport | ________________ | ________________ | Yes |
| iii. Requires ATP | ________________ | ________________ | ________________ |
