CSEE (Form 4) Transport of Materials in Living Things — practice questions

Explore 5 free Transport of Materials in Living Things questions in CSEE (Form 4) Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Transport of Materials in Living Things questions and exercises with answers

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Which process allows water and mineral salts to be absorbed from the soil into a root?Read the answer and worked solution →Mass flow is distinguished from diffusion because mass flow is driven by:Read the answer and worked solution →Fault the wrong transport processesRead the answer and worked solution →A ring of bark is cut from a tree trunk, destroying the phloem. What stops working?Read the answer and worked solution →Xylem or phloem?Read the answer and worked solution →

Worked practice questions

Which process allows water and mineral salts to be absorbed from the soil into a root?

Diffusion
Irritability
Mass flow
Osmosis

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Correct answer: D. Osmosis

1. Water moves from the soil into the root hair cell across a semi-permeable membrane. 2. Movement of water across a semi-permeable membrane is osmosis by definition. 3. Diffusion is the movement of particles from high to low concentration, but without the membrane requirement. 4. Mass flow is bulk movement of substances driven by a pressure difference between two regions. 5. Irritability is detecting and responding to environmental change, which is not a transport process at all. _Source: NECTA CSEE 2022 Biology 033, Question 1: Multiple Choice Items, item (vii)_

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Mass flow is distinguished from diffusion because mass flow is driven by:

the presence of a semi-permeable membrane
a difference in concentration between regions
a difference in pressure between regions
the ability to respond to a stimulus

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Correct answer: C. a difference in pressure between regions

1. Both processes move substances, but the driving force differs. 2. Mass flow is bulk movement of substances from one region to another because of a pressure difference. 3. Diffusion is driven instead by a concentration gradient, from high to low. 4. Osmosis is the case requiring a semi-permeable membrane. 5. Responding to a stimulus is irritability, which is a property of living things rather than a transport mechanism. _Source: NECTA CSEE 2022 Biology 033, Question 1: Multiple Choice Items, item (vii)_

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Fault the wrong transport processes

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Questions

Question
Three of these do not describe water moving from soil into a root hair cell.
Choices
1. Item
  Osmosis across the membrane
  Correct
  Yes
2. Explanation
  mass flow needs a pressure difference, not a membrane
  Item
  Mass flow driven by pressure
3. Explanation
  irritability is responding to a stimulus, not transport
  Item
  Irritability of the root
4. Explanation
  regulation restores internal stability, it moves nothing
  Item
  Regulation of body systems

Instructions

Three of these do not describe water entering a root hair. Fault each one.

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