An experimental set-up as shown in the figure was placed in sunlight for about hours. Study it and answer the question that follows. (a) What phenomenon does this experiment demonstrate? (b) Why was the plant covered with a transparent polythene bag? (c) What will you find if the set-up is placed inside the room?

(a) We call the process through which the leaves lose water in form of water vapour transpiration. This process is essential in keeping the water balance in a plant body and in making the roots able to keep on absorbing water from the soil. This is a continuous process that increases during the day and decreases during the night. The above-given diagram shows water droplets on the polythene when a plant is kept in sunlight demonstrating the process of transpiration. It forms water droplets because of the vapour lost by the leaves. The rate of transpiration increases during the daytime, so keeping the pant in sunlight only for about an hour is enough to form these droplets. Transpiration helps to transport water in the xylem vessels. (b) Transpiration is the process of loss of water in the form of water vapour from the leaves. When the plant is covered with a polythene bag, the water vapour converts into water droplets through the process of condensation. These water droplets can be observed on the inner side of the polythene bag. The plant was also covered to observe the process of transpiration. (c) Transpiration is the process of loss of water in the form of water vapour from the leaves. When the plant is covered with a polythene bag and placed outside in sunlight, the water vapour converts into water droplets by the process of condensation. These water droplets can be observed on the inner side of the polythene bag. If the plant is placed inside the room, due to the lack of sunlight the stomata will not open. Loss of water, i.e. transpiration will not occur. No water droplets would be observed on the inner surface of the polythene bag.

Veer Bala Rastogi Solutions for Chapter: Transport of Food and Minerals in Plants, Exercise 3: TEST Yourself

Author:Veer Bala Rastogi

Veer Bala Rastogi Biology Solutions for Exercise - Veer Bala Rastogi Solutions for Chapter: Transport of Food and Minerals in Plants, Exercise 3: TEST Yourself

Attempt the practice questions on Chapter 1: Transport of Food and Minerals in Plants, Exercise 3: TEST Yourself with hints and solutions to strengthen your understanding. SRIJAN ICSE BIOLOGY solutions are prepared by Experienced Embibe Experts.

Questions from Veer Bala Rastogi Solutions for Chapter: Transport of Food and Minerals in Plants, Exercise 3: TEST Yourself with Hints & Solutions

EASY

8th ICSE

IMPORTANT

SRIJAN ICSE BIOLOGY>Chapter 1 - Transport of Food and Minerals in Plants>TEST Yourself>Q 5

Upward movement of water in the stem takes place through _____. (transpiration pull/ascent sap)

MEDIUM

8th ICSE

IMPORTANT

SRIJAN ICSE BIOLOGY>Chapter 1 - Transport of Food and Minerals in Plants>TEST Yourself>Q 1

State whether the statement is true, or false. If false, rewrite the correct statement.

Osmosis and diffusion are the same phenomena.

MEDIUM

8th ICSE

IMPORTANT

SRIJAN ICSE BIOLOGY>Chapter 1 - Transport of Food and Minerals in Plants>TEST Yourself>Q 2

State whether the statement is true or false. If false rewrite the correct statement.

Plants lose water by the process called Translocation.

EASY

8th ICSE

IMPORTANT

SRIJAN ICSE BIOLOGY>Chapter 1 - Transport of Food and Minerals in Plants>TEST Yourself>Q 3

State whether the statement is true or false. If false, rewrite the correct statement.

Root hairs are multicellular structures.

EASY

8th ICSE

IMPORTANT

SRIJAN ICSE BIOLOGY>Chapter 1 - Transport of Food and Minerals in Plants>TEST Yourself>Q 4

State whether the following statement is true or false. If false, rewrite the correct statement.

Xylem and phloem are vascular tissues.

EASY

8th ICSE

IMPORTANT

SRIJAN ICSE BIOLOGY>Chapter 1 - Transport of Food and Minerals in Plants>TEST Yourself>Q 5

State whether the following statement is true or false. If false, rewrite the correct statement.

Water transport in unicellular plants takes place by diffusion.

HARD

8th ICSE

IMPORTANT

SRIJAN ICSE BIOLOGY>Chapter 1 - Transport of Food and Minerals in Plants>TEST Yourself>Q 1

An experimental set-up as shown in the figure was placed in sunlight for about hours. Study it and answer the question that follows.

Question Image

(a) What phenomenon does this experiment demonstrate?

(b) Why was the plant covered with a transparent polythene bag?

HARD

8th ICSE

IMPORTANT

SRIJAN ICSE BIOLOGY>Chapter 1 - Transport of Food and Minerals in Plants>TEST Yourself>Q 3

In the given experimental setup, a dye is placed at the bottom of the beaker filled with water. After some time, the entire water in the beaker became coloured uniformly as shown in figure D.

Question Image

(a) Name and define the phenomena shown in this experiment.

(b) In the above figure, two kinds of molecules are shown: larger and smaller. Mention which molecules are of the solute and, which are of the solvent.

(c) In all the bigger molecules in A are enclosed in a permeable membrane, what will be the nature of the movement of molecules if any?

Veer Bala Rastogi Solutions for Chapter: Transport of Food and Minerals in Plants, Exercise 3: TEST Yourself

Veer Bala Rastogi Biology Solutions for Exercise - Veer Bala Rastogi Solutions for Chapter: Transport of Food and Minerals in Plants, Exercise 3: TEST Yourself

Questions from Veer Bala Rastogi Solutions for Chapter: Transport of Food and Minerals in Plants, Exercise 3: TEST Yourself with Hints & Solutions

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