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प्रश्न
Mention two ways in which photosynthesis is useful to life.
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उत्तर
Advantages of photosynthesis:
(a) To produce food for all the organisms on earth.
(b) Release oxygen which is a life supporting gas.
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संबंधित प्रश्न
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.
(i) What aspect of photosynthesis was being tested?
(ii) Why was the plant placed in the dark before beginning the experiment?
(iii) During the starch test, why was the leaf
(1) boiled in water
(2) boiled in methylated spirit
(iv) Write a balanced chemical equation to represent the process of photosynthesis.
(v) Draw a neat diagram of a chloroplast and label its parts.
Expand the following biological abbreviations: ATP
The following statement is about photosynthesis in a green plant. Write whether it is True or False.
Land plants obtain their carbon dioxide from the atmosphere.
The following statement is about photosynthesis in a green plant. Write whether it is True or False.
A variegated leaf (one that has white as well as green patches) will only photosynthesize in the green areas.
Mention one difference between the following on the basis of what is given in bracket.
Grass and grasshopper (mode of nutrition)
Complete the following sentence with appropriate word:
A dark reaction is a __________ reaction.
Which one of the following is a primary producer?
Name the plant part
- Which bends in the direction of gravity but away from the light.
- Which bends towards light but away from the force of gravity.
1. What happens to the dandelion flower
- During the daytime?
- At night?
2. What is the phenomenon known as?
Given below are groups of terms. The first pair indicates the relationship between the two terms. Complete the second pair accordingly.
Producers : Autotrophs : : Consumers : ______
