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प्रश्न
An experiment was set up as shown in the figure alongside. Look at the figure and answer the following questions:
( i) What is the objective of this experiment?
( ii ) Which plant is used in this experiment?
( iii ) Which gas is evolved in this process?
( iv ) What will happen to the rate of evolution of this gas if a pinch of sodium
bicarbonate is added?
(v ) What will happen if the apparatus is kept in dark?
उत्तर
(i) The objective of this experiment is to prove that oxygen is released during photosynthesis.
(ii) Hydrilla
(iii) Oxygen
(iv) The rate of photosynthesis will increase and the rate of bubbling also increases when sodium bicarbonate is added.
(v) Photosynthesis will not take place.
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संबंधित प्रश्न
Give biological reasons for the following statements : In some xerophytes leaves are modified into spines
The figure given below represents an experimental setup with a weighing machine to demonstrate a particular process in plants. The experimental setup was placed in bright sunlight. Study the diagram and answer the following questions:
(i) Name the process intended for study.
(ii) Define the above mentioned process.
(iii) When the weight of the test tube (A & B) is taken before and after the experiment, what is observed? Give reasons to justify your observation in A & B.
(iv) What is the purpose of keeping the test tube B in the experimental setup?
Distinguish between the following:
Photosynthesis and photophosphorylation.
Mention any two points in which photosynthesis and respiration in plants are opposite to each other.
The following statement is about photosynthesis in a green plant. Write whether it is True or False.
Photosynthesis results in a gain in dry weight.
Match the terms of column I with those in column II:
| Column I | Column II |
| (i) Stomata closed | (a) decomposers |
| (ii) Autotrophs | (b) light reaction |
| (iii) By-products of photosynthesis | (c) animals |
| (iv) Photolysis | (d) during night |
| (v) Bacteria and fungi | (e) green plants |
| ( f) oxygen |
Are the following statement true or false? Give reason in support of your answer.
The starting point of carbon cycle is the release of carbon dioxide by animals during respiration.
All life on earth Would come to an end if there were no green plants.
Respiration is said to be the reversal of photosynthesis.
Give technical term:
Organisms which cannot prepare their own food by photosynthesis.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
A variegated leaf (one that has green as well as white patches) will only photosynthesize in the green areas.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
KOH absorbs CO2.
Choose the correct option.
Energy is transferred from the light reaction step to the dark reaction step by ______.
Choose the correct option.
In maize and wheat, the first stable products formed in bundle sheath cells respectively are ________.
Fill in the blank by rearranging the letter in the bracket.
During photosynthesis plants releases _________ (egxyno).
What will happen if you breathe through mouth?
A plant is kept in a dark room for about 24 hours before conducting any experiment on photosynthesis in order to ______.
When iodine solution is added for testing starch, part of the leaf with ______ turns a blue-black color.
What is the end product of photosynthesis?
Label the diagram with the raw materials and products of photosynthesis.
