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प्रश्न
If the rate of respiration becomes more than the rate of photosynthesis, plants will:
विकल्प
continue to live, but will not be able to store food
be killed instantly
grow more vigorously because more energy will be available
stop growing and die gradually of starvation
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उत्तर
stop growing and die gradually of starvation
Explanation:
When the rate of respiration exceeds the rate of photosynthesis, the plant will stop growing and gradually die of starvation. Initially, the plant will rely on its stored food reserves to meet its energy needs. However, if this imbalance continues, these food reserves will eventually be depleted, leading to the plant’s eventual death.
संबंधित प्रश्न
State the main functions of the following:
Cytokinins
Fig. represents the vertical section of a leaf.
- Name the parts labelled 1 to 5.
- What do the two arrows (dotted and solid) indicate in the daytime and at night?
- Could you add one more arrow in the figure? If yes, what for?
Choose the correct answer:
Which one of the following is the best reason for leaving a plant in a dark place before carrying out experiments on photosynthesis?
A candidate studied the importance of certain factors in photosynthesis. He took a potted plant and kept in the dark for over 24 hours. In the early hours of the next morning, he covered one of the leaves with black paper in the centre only. Then he placed the plant in sunlight for a few hours and tested the leaf which was covered with black paper for starch.
Why was the plant kept in the dark before the experiment?
The figure given below is for performing an experiment on photosynthesis.
Answer the following:
(i) What is the aim of this experiment?
(ii) Describe an experiment to show that light is necessary for photosynthesis.
(iii) What do you conclude from this experiment?
(iv) What is the role of light in photosynthesis?
Complete the following sentence with appropriate word:
One of the products of ______of water is oxygen.
Plants inhale and exhale continuously through the ______.
The bending of shoot towards light is due to the hormone ______.
Assertion (A): All food chains begin with herbivores.
Reason (R): Green plants are heterotrophs.
Which of the following is not applicable to the process of photosynthesis?
