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प्रश्न
Which of the following statements about the autotrophs is incorrect?
पर्याय
They synthesise carbohydrates from carbon dioxide and water in the presence of sunlight and chlorophyll
They store carbohydrates in the form of starch
They convert carbon dioxide and water into carbohydrates in the absence of sunlight
They constitute the first trophic level in food chains.
उत्तर
They convert carbon dioxide and water into carbohydrates in the absence of sunlight
Explanation -
To convert carbon dioxide and water into carbohydrates, they require sunshine.
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संबंधित प्रश्न
Fill in the following blanks with suitable words :
Green plants use .................... and .................... to make food.
Which simple food is prepared first in the process of photosynthesis?
What will happen to the rate of photosynthesis on a plant under the following circumstances?
(i) cloudy day in morning but bright sunshine in the afternoon
(ii) no rainfall in the area for a considerable time.
(iii) gathering of dust on the leaves
An organism A which cannot move from one place to another, makes a simple food B from the substances C and D available in the environment. This food is made in the presence of a green coloured substance E present in organs F in the presence of light energy in a process called G. Some of the simple food B also gets converted into a complex food H for storage purposes. The food H gives a blue-black colour with dilute iodine solution.
(a) What is (i) organism A (ii) food B, and (iii) food H?
(b) What are C and D?
(c) Name (i) green coloured substance E, and (ii) organ F.
(d) What is the process G?
Explain why, plants have low energy needs as compared to animals.
Why is plant food not produced in any other parts of the plant except the green ones?
Which of the following equations is the summary of photosynthesis?
The Figure shown below represents an activity to prove the requirements for photosynthesis. During this activity, two healthy potted plants were kept in the dark for 72 hours. After 72 hours, KOH is kept in the watch glass in setup X and not in setup Y. Both these setups are air tight and have been kept in light for 6 hours. Then, Iodine Test is performed with one leaf from each of the two plants X and Y.
Which of the following statements shows the correct results of Iodine Test performed on the leaf from plant X and Y respectively?
The internal (cellular) energy reserve in autotrophs is
In the given diagram of a closed stomata: (1), (2), (3) and (4) respectively are:
