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प्रश्न
Give reasons/explain:
During the starch test, the leaf is boiled in water.
उत्तर
Boiling the leaf in water kills its cells, denaturing enzymes that can compromise tests later on.
संबंधित प्रश्न
Complete the following statement by choosing the correct alternative given below :
All animals would die on the earth if there was no ______.
Are the following statement true or false? Give a reason in support of your answer.
Destarching of the leaves of a potted plant can occur only at night.
Why is it not possible to demonstrate respiration in a green plant kept in sunlight?
Given below is the representation of a certain phenomenon in nature. With four organisms 1-4.
- Name the phenomenon represented.
- Name any one organism that could be shown at No. 5.
- Name the biological process which was the starting point of the whole chain.
- Name one natural element which all the organisms 2-4 and even 5 are getting from No. 1 for their survival.
Given alongside is the diagram of an experimental set-up:
Will it work satisfactorily? Given reason.
A potted plant was taken in order to prove a factor necessary for photosynthesis. The potted plant was kept in the dark for 24 hours. One of the leaves was covered with black paper in the centre. The potted plant was then placed in sunlight for a few hours.
Write a balanced chemical equation to represent the process of photosynthesis.
Chloroplasts are called energy converters.
ATP is needed for the dark reaction.
Complete the following sentence with appropriate word:
Carbon dioxide enters the leaf through _______.
Choose the Correct Answer:
The main difference between chlorophyll ‘a’ and ‘b’ is:
