Transport of Minerals

Q.

Guard cells differ from other epidermal cells in having:

1. Mitochondria

2. Vacuoles

3. Cell Wall

4. Chloroplasts

Q.

Through which of the following plants do the maximum transpiration occur?

1. Bryophytes.

2. Mesophytes.

3. Thallophytes.

4. Pteridophytes.

Q.

Which one is true about guttation?

1. It occurs through specialized pores called hydathodes.

2. It occurs in herbaceous plants when root pressure is low and transpiration is high.

3. It only occurs during day time.

4. It occurs in plants growing under conditions of low soil moisture and high humidity.

Q.

Where does the process of guttation take place?

Q.

How is iron, copper and manganese made available to plants?

Q.

When a potted plant is flooded with water, the magnitude of root pressure _______.

1. Increases

2. Remains unchanged

3. Decreases

4. Becomes negative

Q.

The process that does not require energy for movement of particles are

1. Movement of gases through stomata

2. Absorption of water by the roots

3. Absorption of nutrients by the root cells

4. Movement of CO2 for photosynthesis

Q. The water molecules enter the root hair if the concentration of solutes in the soil is ________ than the cell sap through _________.

1. less, diffusion
2. more, osmosis
3. more, diffusion
4. less, osmosis

Q.

Complete the following statements by choosing the correct alternative out of those given in the brackets :

Approximately 98 % of water is absorbed through __________________________ ( active absorption / passive absorption / plasmolysis ) .

Q.

Guttation is:

1. Movement of soluble organic materials through plants

2. Movement of water through the apoplast

3. Negative pressure created by transpiration

4. Evidence of root pressure

Q. Which of the following is connected with transport of water in plants?

1. Phloem
2. Cambium
3. Epidermis
4. Xylem

Q. is the pressure that helps in driving the fluids and other ions from the soil in upwards direction into the plant’s vascular tissue.

1. Osmotic pressure
2. Root pressure
3. Turgor pressure
4. Water pressure

Q.

Which of the following is a wrong match?

1. Apoplast – system of adjacent cell walls

2. Phloem - Transport of water

3. Root pressure – guttation

4. Symplast - system of inter connected protoplasts