Advertisements
Advertisements
Question
In a tall tree, which force is responsible for pulling water and minerals from the soil?
Options
Gravitational force
Transportation force
Suction force
Conduction force
Solution
Suction force
Explanation:
The root cells absorb water and mineral salts continuously from the soil. The evaporation of water from the leaf surfaces during the process of transpiration produces a suction force (transpiration pull) that causes the water to move upwards.
APPEARS IN
RELATED QUESTIONS
Why is transport of materials necessary in a plant or in an animal? Explain.
Does transpiration serve any useful function in the plants? Explain.
What substance/substances are transported in plants by:
xylem vessels and tracheids?
What is the need of special tissues or organs for transport of substances in plants and animals?
The site of photosynthesis in the cells of a leaf is ____________.
Assertion: Resins and gums are stored in old xylem tissue in plants.
Reason: Resins and gums facilitate transport of water molecules.
How do leaves of plants help in excretion?
These consist of two statements – Assertion (A) and Reason (R). Answer these questions selecting the appropriate option given below:
Assertion: Amphibians can tolerate mixing of oxygenated and deoxygenated blood.
Reason: Amphibians are animals with two chambered heart
Match the pairs.
| Group ‘A’ | Group ‘B’ | ||
| (1) | Parasitic plant | (a) | Mushroom |
| (2) | Insectivorous plant | (b) | Lichen |
| (3) | Saprophytic plant | (c) | Drosera |
| (4) | Symbiotic plant | (d) | Cuscuta |
We need to water the soil in plants on a regular basis but it ultimately reaches the leaves of the plant. Explain how this takes place.
