Advertisements
Advertisements
प्रश्न
State whether the following statement is true or false. Rewrite the false statement correctly.
Transpiration cools the plant when it is hot outside.
पर्याय
True
False
उत्तर
True
Transpiration cools the plant when it is hot outside.
APPEARS IN
संबंधित प्रश्न
Transpiration is defined as:
Briefly explain, how transpiration helps in upward conduction of water in plants?
Give suitable explanation for the following:
Cork and bark of trees help in preventing loss of water
Given alongside is the diagram of an experimental set-up to demonstrate a certain phenomenon in plants.
Name the phenomenon being demonstrated.
The figure below represents the set-up at the start of certain experiment to demonstrate an activity of plants:
(i) What is the aim of the experiment?
(ii) Why has oil been put in each test tube?
(iii) What will be the observations in the two test-tubes after about 2-3 days?
(iv) Give reasons to explain any change observed as answered in (iii) above.
(v) Why has the test-tube b without the plant, been taken in the experiment?
A well watered healthy potted plant with variegated leaves was kept in darkness for about 24 hours. It was then set up as shown in the diagram and exposed to light for about 12 hours. At the end of this time, leaf x and y were tested for starch. Study the diagram and answer the questions that follow:
(i) Why was the plant initially kept in darkness for 24 hours?
(ii) What is the function of sodium hydroxide solution in the flask?
(iii) Select the correct leaf from the five available choices shown in the diagram as a, b, c, d and e. Rewrite the correct answer by filling in the appropriate letter for the questions that follow:
1. After the starch test, leaf x would look like ______.
2. After the starch test, leaf y would look like ______.
(iv) The experiment with leaf y shows that photosynthesis requires the presence of certain factors. Mention any one factor.
An apparatus as shown below was set up to investigate a physiological process in plants. The setup was kept in sunlight for two hours. Droplets of water were then seen inside the bell jar. Answer the questions that follow:
List three adaptations in plants to reduce the above mentioned process.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Moist cobalt chloride paper is blue in colour.
What type of transpiration is possible in the xerophyte Opuntia?
Write a note on Transpiration.
