Question 7

Which of the following is correct for respiration in plants?
(a) Respiration takes place only during daytime.
(b) Respiration take place only during night.
(c) Respiration takes place both during day and night.
(d) Respiration takes place only when plants are not making food.

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Solution

Option (c).

In plants, respiration takes place both during day and night to keep the plant alive. However, it is prominent at night. At the same time, photosynthesis takes place only in the presence of light, that is during the daytime.

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Question 7

Which of the following is correct for respiration in plants?
(a) Respiration takes place only during daytime.
(b) Respiration take place only during night.
(c) Respiration takes place both during day and night.
(d) Respiration takes place only when plants are not making food.

Q. Which of the following statements are true about respiration?

(i) In plants, respiration happens during the night time only, while photosynthesis happens during the day.

(ii) In humans, the exchange of gases takes place in the alveoli.

(iii) Haemoglobin has a greater affinity for oxygen than carbon dioxide.

(iv) Aquatic organisms use the oxygen in the surrounding atmosphere for respiration.

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Q. Does photosynthesis and respiration takes place in plants at short intervals during the day

Q. Plants carry out photosynthesis only during the day and respiration only at night.

(a) Give the main points of difference between respiration in plants and respiration in animals.
(b) Describe the exchange of gases which takes place in the leaves of a plant (a) during daytime, and (b) at night.
(c) Which contains more carbon dixoide : exhaled air or inhaled air ? Why ?

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Question 7 Which of the following is correct for respiration in plants? (a) Respiration takes place only during daytime. (b) Respiration take place only during night. (c) Respiration takes place both during day and night. (d) Respiration takes place only when plants are not making food.

Option (c). In plants, respiration takes place both during day and night to keep the plant alive. However, it is prominent at night. At the same time, photosynthesis takes place only in the presence of light, that is during the daytime.

Question 7

Which of the following is correct for respiration in plants?
(a) Respiration takes place only during daytime.
(b) Respiration take place only during night.
(c) Respiration takes place both during day and night.
(d) Respiration takes place only when plants are not making food.

Option (c).

In plants, respiration takes place both during day and night to keep the plant alive. However, it is prominent at night. At the same time, photosynthesis takes place only in the presence of light, that is during the daytime.