FBISE, NCP & NBF-aligned resources for Classes 9–12
Browse by Class
Browse by Type
Biology Chapter 8 : Topic 6
Water and Mineral Absorption by Roots
1 / 15
Water enters root hairs mainly by:
Reasoning: Water moves from soil into root hairs by osmosis through a semi-permeable membrane.
2 / 15
Mineral salts are mainly absorbed by roots through:
Reasoning: Mineral ions are often taken up against concentration gradient using energy (ATP).
3 / 15
Passive absorption of water means:
Reasoning: Passive absorption occurs without using metabolic energy.
4 / 15
Active absorption of mineral ions requires:
Reasoning: Active transport uses energy (ATP) to move ions against concentration gradient.
5 / 15
Water absorption in roots is mainly driven by:
Reasoning: Water moves due to osmotic gradient and transpiration pull.
6 / 15
Which structure directly absorbs water from soil?
Reasoning: Root hairs increase surface area for absorption.
7 / 15
Passive absorption of mineral salts occurs when:
Reasoning: Passive movement occurs along concentration gradient without energy use.
8 / 15
Active transport is best described as movement of substances:
Reasoning: Active transport uses ATP to move substances against gradient.
9 / 15
Which process helps water move from soil into root hairs?
Reasoning: Water enters root hairs through osmosis.
10 / 15
Mineral ions are often absorbed actively because:
Reasoning: Roots need higher ion concentration than soil, requiring active transport.
11 / 15
Which factor is essential for active absorption?
Reasoning: Active transport requires energy in the form of ATP.
12 / 15
Passive absorption of water depends mainly on:
Reasoning: Water moves from high to low water potential.
13 / 15
Root hairs are important because they:
Reasoning: More surface area increases efficiency of absorption.
14 / 15
Which statement is correct?
Reasoning: Active transport needs energy; passive transport does not.
15 / 15
Movement of mineral ions against concentration gradient is called:
Reasoning: Active transport moves substances against gradient using energy.
Your score is
Restart quiz
