Selina solutions

Selina solutions

Grade 8

Transportation in plants | Multiple Choice Questions (MCQ)

Question 1

Q1) Put a tick mark against the correct alternative in the following statements:

(a) Diffusion occurs when molecules move:

  1. From lower concentration to higher concentration.

  2. From higher concentration to lower concentration through a membrane.

  3. From higher concentration to lower concentration.

  4. When energy is used.

(b) The ascent of sap in plants takes place through:

  1. Cortex

  2. Epidermis

  3. Xylem

  4. Phloem

(c) if the xylem vessels of a plant are plugged :

  1. The leaves will turn yellow

  2. No food will be made

  3. The plant will wilt (shrivel)

  4. The plant will continue to grow

(d) The force responsible for the ascent of sap is:

  1. Capillary force

  2. Root pressure

  3. Transpirational pull

  4. All three

(e) raisins swell when put in:

  1. Rain water

  2. Tap water

  3. Mustard oil

  4. Saturated sugar solution

(f) the root-hairs are suited for absorbing water from the soil because:

  1. They have a large surface area

  2. They have a semi-permeable membrane

  3. They contain a solution of higher concentration than the surrounding water

  4. All three

(g) Transpiration is defined as:

  1. The rise of water up to the stem of the plant.

  2. The elimination of water with dissolved water products.

  3. The loss of water as water vapour from the aerial parts of a plant.

  4. The loss of water as water vapour from the roots as well as the leaves of the plant.

(h) which one of the following favours the fastest transpiration rate?

  1. A cool, humid, windy day,

  2. A hot, humid, windy day,

  3. A hot, humid, still day,

  4. A hot, dry, windy day,

Solution:

(a) 3. From higher concentration to lower concentration.

(b) 3. Xylem

(c) 3. The plant will wilt (shrivel)

(d) 4. All three

(e) 1. Rain water

(f) 4. All three

(g) 3. The loss of water as water vapour from the aerial parts of a plant.

(h) 4. A hot, dry, windy day.

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subject-cta

Question 1

Q1) Put a tick mark against the correct alternative in the following statements:

(a) Diffusion occurs when molecules move:

  1. From lower concentration to higher concentration.

  2. From higher concentration to lower concentration through a membrane.

  3. From higher concentration to lower concentration.

  4. When energy is used.

(b) The ascent of sap in plants takes place through:

  1. Cortex

  2. Epidermis

  3. Xylem

  4. Phloem

(c) if the xylem vessels of a plant are plugged :

  1. The leaves will turn yellow

  2. No food will be made

  3. The plant will wilt (shrivel)

  4. The plant will continue to grow

(d) The force responsible for the ascent of sap is:

  1. Capillary force

  2. Root pressure

  3. Transpirational pull

  4. All three

(e) raisins swell when put in:

  1. Rain water

  2. Tap water

  3. Mustard oil

  4. Saturated sugar solution

(f) the root-hairs are suited for absorbing water from the soil because:

  1. They have a large surface area

  2. They have a semi-permeable membrane

  3. They contain a solution of higher concentration than the surrounding water

  4. All three

(g) Transpiration is defined as:

  1. The rise of water up to the stem of the plant.

  2. The elimination of water with dissolved water products.

  3. The loss of water as water vapour from the aerial parts of a plant.

  4. The loss of water as water vapour from the roots as well as the leaves of the plant.

(h) which one of the following favours the fastest transpiration rate?

  1. A cool, humid, windy day,

  2. A hot, humid, windy day,

  3. A hot, humid, still day,

  4. A hot, dry, windy day,

Solution:

(a) 3. From higher concentration to lower concentration.

(b) 3. Xylem

(c) 3. The plant will wilt (shrivel)

(d) 4. All three

(e) 1. Rain water

(f) 4. All three

(g) 3. The loss of water as water vapour from the aerial parts of a plant.

(h) 4. A hot, dry, windy day.

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subject-cta
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