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Biology Chapter 8 : Topic 9
Transport of Water and Mineral Salts
1 / 15
Water and mineral salts are transported from roots to leaves mainly through:
Reasoning: Xylem is the conducting tissue responsible for upward transport of water and minerals.
2 / 15
Which structure first absorbs water from the soil?
Reasoning: Root hairs absorb water and dissolved mineral salts from the soil.
3 / 15
After entering root hairs, water moves toward the xylem mainly by:
Reasoning: Water passes from cell to cell by osmosis until it reaches xylem.
4 / 15
Which force is primarily responsible for pulling water upward in tall plants?
Reasoning: Transpiration creates a suction force that pulls water upward.
5 / 15
Mineral salts are transported in plants mainly in:
Reasoning: Dissolved mineral ions travel upward with water in xylem.
6 / 15
Which process creates the transpiration pull?
Reasoning: Water loss from leaves generates a pulling force.
7 / 15
Root pressure helps in:
Reasoning: Root pressure contributes to upward movement of water.
8 / 15
The continuous column of water in xylem is maintained due to:
Reasoning: Cohesion keeps water molecules connected.
9 / 15
Adhesion helps water transport by:
Reasoning: Adhesion prevents water column from breaking.
10 / 15
Which event occurs first in the transport of water?
Reasoning: Water must first enter the plant through root hairs.
11 / 15
If transpiration suddenly stops, the upward movement of water will:
Reasoning: Transpiration pull is the major force for water transport.
12 / 15
Which tissue transports water only in one direction?
Reasoning: Xylem transports water upward from roots to shoots.
13 / 15
A plant placed in a humid environment may show slower water transport because:
Reasoning: High humidity reduces transpiration and therefore transpiration pull.
14 / 15
Which combination is directly involved in the upward movement of water?
Reasoning: These are the main factors responsible for water transport.
15 / 15
Which statement best describes the mechanism of transport of water and salts in plants?
Reasoning: This summarizes the complete pathway and mechanism of transport.
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