Imbibition

Q.

What are Soft and Hard materials? Give example

Q.

What happens when dried raisins are placed in water and then in sugar solution?

Q.

Explain how soaked seeds swell up and burst their seed coats.

Q.

Wooden doors swell up in the rainy season due to _____.

1. imbibition
2. diffusion
3. plasmolysis
4. osmosis

Q.

Absorption of water by the plant cells by surface attraction is called:

(a) Diffusion (b) Osmosis

(c) Imbibition (d) Endosmosis

Q.

Due to ______ pressure, the seed coat ruptures in case of germinating seeds.

1. transpirational

2. imbibitional

3. osmotic

4. diffusion

Q.

Which of the following is an example of imbibition?

1. Exchange of gases in stomata

2. Opening of stomata

3. Swelling of seed when put in soil

4. Uptake of water by root hair

Q.

Why do marine fish burst when thrown under tap water?

1. Endosmosis

2. Exosmosis

3. Diffusion

4. Plasmolysis

Q. Absorption of water by plant cells due to surface attraction is called .

1. diffusion
2. osmosis
3. imbibition
4. endosmosis

Q.

Why imbibition increases with temperature?

Q. is responsible for the rupture of seed coats during germination.

1. Osmosis
2. Diffusion
3. Imbibition
4. Turgor pressure

Q.

When a cell is kept in 0.5 M solution of sucrose, Its volume does not change. If the same cell is kept in 0.5 M solution of NaCl, the volume of cell wall

1. Increase

2. Decrease

3. Cell will be plasmolysed

4. No change

Q. Why do raisins swell when soaked in water? Explain the phenomenon.

Q.

Give the term for following process:

Swelling of resins in water.

Q.

The leaves of a well-watered potted plant were found wilted during a hot sunny day.

b. Would the cells of the leaves in the wilted state be flaccid or turgid?

c. Explain briefly the meaning of the term mentioned in your answer to (b).

Q.

Process by which seeds that are placed in water, soak in water and swell up.

1. Diffusion

2. Osmosis

3. Active transport

4. Imbibition

Q. ntFind the solubility product of a saturated solution of silver chromate in water at 298 K if emf of the cell Ag/Ag2CrO4 (saturated solution)//Ag+ (0.1 M) /Ag is 0.164 V at 298 K.n

Q.

Cement floor is laid as one block.

1. True
2. False

Q. _________ is the phenomenon by which living or dead plant cells absorb water by surface attraction and gets swelled up.

Q.

A test tube filled with previously moistened Bengal gram seeds and water was closed tightly and kept in a corner. The test tube broke suddenly after a few hours. The phenomenon involved is _____.

1. diffusion

2. osmosis

3. imbibition

4. capillary action

Q. Fresh grapes shall shrink when they are placed in

1. Hot water
2. Cold water
3. Starch water
4. Concentrated salt solution

Q.

A small glass bottle is filled till top with dry seeds and water. It is corked and left but suddenly after few hours it explodes. This happens due to the phenomenon of:

1. Imbibition

2. Respiration

3. Osmosis

4. Diffusion

Q.

State whether the following statements are true/false.
Rewrite the false statements after correction.​

​(iv) Osmosis is the process by which molecules of a solute spread uniformly across a medium.​

Q. If raisins are kept in .......... solution, they will shrink.

1. Hypertonic
2. Hypotonic
3. Isotonic
4. None of these

Q. What experiment will you perform to prove osmosis?

Q. Absorption of water by plant cells due to surface attraction is called .

1. diffusion
2. osmosis
3. imbibition
4. endosmosis

Q.

Arrange the following plant materials in order of their imbibing capacity from high to low.

1. Proteins, starch, cellulose

2. Starch, proteins, cellulose

3. Cellulose, proteins, starch

4. Cellulose, starch, proteins

Q.

soaked seeds burst three seed coats. give reason.

Q.

The phenomenon by which the living or dead plant cells absorb water by surface attraction is ___ .

1. meristematic activity of root tip

2. elongation of root tip

3. maturation of root tip

4. root with secondary growth

Q. Very short answer type.
State the best known contribution of Munch