Tag: types of transport

Questions Related to types of transport

Factors like plasmolysis, deplasmolysis, root pressure, turgidity, flacidity in plants are responsible for

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

  1. Absorption of water and minerals in plants

  2. Movement of water and minerals inside roots of the plants

  3. Movement of water and minerals upward in the stem

  4. All of the above

Show answer
Correct Option: D
Explanation:

The absorption of water and minerals from the soil by the roots of plants and their movement inside roots of the plant and subsequently its upward movement in stem and other aerial parts of the plant body is because of the following phenomenon:-
Imbibition
Diffusion
Osmosis
Osmotic pressure
Root pressure
Turgidity and flacidity
Plasmolysis and deplasmolysis 

Which of the factor is responsible for absorption and water and minerals in plants ?

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

  1. Plasmolysis

  2. Turgidity

  3. Osmotic pressure

  4. All of the above

Show answer
Correct Option: D
Explanation:

The absorption of water and minerals from the soil by the roots of plants and their movement inside roots of the plant and subsequently its upward movement in stem and other aerial parts of the plant body is because of the following phenomenon:-
Imbibition
Diffusion
Osmosis
Osmotic pressure
Root pressure
Turgidity and flacidity
Plasmolysis and deplasmolysis

Ringing experiment is to show

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

  1. Translocation of food

  2. Passive absorption

  3. Stomatal opening and closing

  4. None of the above

Show answer
Correct Option: A
Explanation:

In ringing experiment a complete ring of tissue is removed outside the vascular cylinder at a particular height from ground in a dicot plant. As the xylem is intact water can move freely to the aerial parts from roots. But the sugars cannot move down to roots from aerial parts, because of the removal of phloem tissue, which occurs in the outer cylinder and is removed in ringing experiment. 

A prominent swelling is observed just above the point of removal of ring of tissue due to accumulation of sugars. This experiment proves the respective roles of xylem and phloem in transportation of water and sugars.

I. Assertion: sugar is translocated to buds for growing them into flowers.
II. Reason:  xylem transport food through the plant.

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

  1. I and II both are correct and II is correct explanation for I

  2. I is correct and II is incorrect

  3. I and II both are false

  4. I and II both are correct but II is not correct explanation to I

Show answer
Correct Option: B
Explanation:

The increased contents within the cells exert a high amount of pressure on their wall. This pressure moves the food material to the adjacent cells with low pressure. This allows the phloem to move material according to the plants needs.

Root pressure theory and cohesion adhesion theory is possible due to _____

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

  1. Phloem

  2. Xylem trachieds

  3. Parenchymatic tissue

  4. None of the above

Show answer
Correct Option: B
Explanation:

There are two types of vascular tissues present in the plants viz. Xylem and Phloem. Xylem is responsible for transport of water and some minerals. Phloem is responsible for transport of food and minerals.

Root pressure provides a force which causes

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

  1. Pushing of water in the stem

  2. Pulling of water in the stem

  3. Both A and B

  4. None of these

Show answer
Correct Option: A
Explanation:

Root pressure provides a force which causes pushing of water in a stem. A continuous flow of water is maintained in the plants because the leaves transpire water through stomata and to replace the lost water the water drawn by the roots moves up.

Supply end in solute transport is

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

  1. Root

  2. Stem

  3. Green leaves and storage organs

  4. Xylem and phloem

Show answer
Correct Option: C
Explanation:
(A)Root is the absorption end of the plant.
(B)The stem is the anchorage end of the plant.
(C)Leaf is the supply end of the plant.
(D)Xylem and phloem are the conducting ends.
So, the correct answer is 'Green leaves and storage organs'.

A plant of reed -swamp stage is __________.

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

  1. Juncus

  2. Salix

  3. Trapa

  4. Sagittaria

Show answer
Correct Option: D

Periderm includes __________________.

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

  1. Phelloderm, collenchyrna and cortex

  2. Phellem, cambium and cortex

  3. All the tissues between epidermis and pith

  4. Phellogen, phellem and phelloderm

Show answer
Correct Option: A

With reference to the water relations of plants, consider the following statements.
a. The mechanical work done by a chemical system during any change at constant temperature is equal to the decrease in its free energy
b. In the case of inhibition, as water continues to move into the imbibing, the water potential of the water in the imbibing becomes less negative
c. Osmotic pressure is directly proportional to the number of solute molecules per solvent.
Which of these statements are correct?

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

  1. $1$ and $2$

  2. $2$ and $3$

  3. $1$ and $3$

  4. $1, 2$ and $3$

Show answer
Correct Option: A