Tag: transport in vascular plants

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Questions Related to transport in vascular plants

Multiple choice biology transport in plants diffusion transport in vascular plants types of transport

Choose the correct answer from the alternatives given.
By what method arc ions absorbed by plants?

  1. Along DPD gradient

  2. By molecular diffusion

  3. By carriers and pumps

  4. Along water potential gradients
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

 For plants to take up mineral ions, ions are moved into root hairs, where they are in a higher concentration than in the dilute solutions in the soil. Active transport (pumps) then occurs across the root so that the plant takes in the ions it needs from the soil around it. The root hair cells have carrier molecules on their surface that pick up the minerals and move them into the cell against the concentration gradient.

So, the correct option is, 'By carriers and pumps'.

Multiple choice biology transport in plants diffusion transport in vascular plants types of transport

The direction of water in Cycas leaflets is 

  1. Upward

  2. Downward

  3. Lateral

  4. Both A and B
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

(A) The upward flow of the water is seen in the roots of the plant.

(B) Downward flow is seen in the bulk transportation from leaf to every other part of the plant.
(C) Lateral flow of water is seen in leaf and roots due to the diffusion patterns.
So. the correct answer is 'Lateral'

Multiple choice biology transport in plants diffusion transport in vascular plants types of transport

Choose the correct answer from the alternatives given.
Minerals are absorbed in:

  1. meristematic zone

  2. root hair zone

  3. elongation zone

  4. root cap zone
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Plants absorb their mineral salt supply from the soil through the roots from the zones of elongation and root hair. The minerals are absorbed as ions which are accumulated by the plants against their concentration in the soil.

So, the correct option is, 'Elongation zone'.

Multiple choice biology transport in plants diffusion transport in vascular plants types of transport

Choose the correct answers from the alternatives given.
The energy source that drives the upward flow of water is

  1. Light

  2. Glucose

  3. ATP

  4. Solar heat
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Solar heat causes the evaporation of water from the surface of the leaves in form of water vapour through small openings called stomata. This loss is known as transpiration. Due to the loss of water, water stress condition is created that forces the upward movement of water from the soil towards the shoot system. This water is then again distributed to various plant parts.

Hence, the correct answer is 'Solar heat'.