Uptake of Mineral Ions

Q.

Explain translocation in phloem tissue.

Q. 8.What will happen to a plant if xylem is removed? (2)

Q.

What is suberin???

Q.

Plants absorb minerals by:

1. Passive absorption

2. Active absorption

3. Diffusion

4. None of these

Q.

In experiment showing thistle funnel which contains conc. sugar solution demonstrating osmosis, how does the sugar solution level rises even if the solution is concentrated?

Q. Structures involved in transport of food and other substances through phloem in plants

Q. Plants absorb nutrients through their _______.

1. Flowers
2. Stem
3. Leaves
4. Root

Q. The transportation of photosynthetic product is known as ___.

Q.

Which component allows the movement of sugar stored in the roots or stem to the newly growing buds in spring?

1. Tracheids

2. Phloem

3. Vessels

4. Xylem

Q.

define osmosis. Give its significance in the life of a plant and cite example to explain the role of osmosis.

Q. Transport of food material in plants takes place through:

1. Companion cells
2. Sieve Tubes
3. Tracheids
4. Xylem

Q. The diagram shows part of a section through a leaf.
Which arrow shows the direction of movement of water by osmosis in a leaf?

1. A
2. C
3. D
4. B

Q. Mineral translocation in plants occurs through

1. Xylem
2. Tracheids
3. Phloem
4. All of the above

Q.

Write one word for the following:

1. The strong force of attraction between the water molecules?

Q.

What is the term given out for molecular attraction by which the particles within a body remain united throughout mass?

1. Transpiratory force

2. Adhesion

3. Cohesion

4. Capillary force

Q. Why osmosis doesnt takes place in dead cells?

Q. A storage organ is a part of a plant specifically modified for storage of energy generally in the form of

1. Water
2. Carbohydrates
3. None of the above
4. Both A and B

Q. Food is transported to various parts of the plant through

1. Root hairs
2. Phloem
3. Xylem
4. Stomata

Q. Food synthesized in the leaves is transported to other parts by

1. Translocation
2. Nastic movement
3. Phototaxis
4. Chemotaxis

Q.

Specific ions are acquired by root hairs against the concentration gradient by___________

1. simple diffusion

2. osmosis

3. active transport

4. facilitated diffusion

Q. Water in plants is transported by ascent of sap, which takes place through

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

Q.

Assertion (A): Much of the nitrogen and small amounts of phosphorus and sulphur are carried in the organic form through xylem.

Reason (R): Xylem transports only inorganic nutrients and phloem transports only organic nutrients.

1. Both A & R are true and R does not explain A

2. A is true and R is false

3. Both A & R are false

4. Both A & R are true and R explains A

Q. Short answer type questions
Discuss the mechanism of absorption of mineral salts by plant

Q. can process of osmosis be effective if a cell has permeable membrane as compared to a cell having selectively permeable membrane ?

Q. Which of the following statements is incorrect?

1. Plants take in small quantity of mineral salts through soil water
2. Plants absorb only one thing at a time, water or inorganic salts
3. Water and inorganic salts are taken simultaneously by root hairs
4. Roots are the main absorbing organs of plants

Q.

Identify the correct statements related to the uptake of mineral ions

A. The membrane proteins pump ions from soil into the cytoplasm of epidermal cells

B. Transport proteins of endodermal cells act as control points, which adjust the quantity and type of solutes reaching the xylem

C. Root endoderm due to its suberin layer, can not transport ions

1. A & B

2. B & C

3. A, B & C

4. A & C

Q. Which one of the following does not help in molecule transport?

1. Osmosis
2. Surface tension
3. Diffusion
4. Active transport

Q.

Some of the nitrogen travels as inorganic ions, but the bulk of it is carried in the organic form as amino acids and related compounds.

1. True

2. False

Q.

Majority of the minerals are absorbed by active absorption because:

1. Minerals are present in the form of ions in the soil.

2. The concentration of minerals is more in the root than soil.

3. Charged particles cannot move across cell membrane.

4. Root cells have excess energy.

Q.

Specific ions are acquired by root hairs by the process of:

1. Simple diffusion

2. Osmosis

3. Active transport

4. Facilitated diffusion