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If a plant is releasing carbon dioxide and taking in oxygen during the day, does it mean that there is no photosynthesis occurring? Justify your answer. - Science

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प्रश्न

If a plant is releasing carbon dioxide and taking in oxygen during the day, does it mean that there is no photosynthesis occurring? Justify your answer.

टीपा लिहा

उत्तर

No, it does not mean that photosynthesis is not taking place. During the day, carbon dioxide released by plants during respiration is used up for photosynthesis, and some of the oxygen released during photosynthesis is used for respiration by the plants. Release of oxygen is a sign that photosynthesis is occurring in plant.

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पाठ 1: Life Processes - Exercise 1 [पृष्ठ २६]

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लखमीर सिंह Biology (Science) [English] Class 10
पाठ 1 Life Processes
Exercise 1 | Q 61.2 | पृष्ठ २६

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संबंधित प्रश्‍न

How are the lungs designed in human beings to maximize the area for exchange of gases?


Name one substance which is produced in anaerobic respiration by an organism but not in aerobic respiration.


Name the red pigment which carries oxygen in blood.


Describe the process of respiration in the following part of a plant:

Root


What are the major organs of respiratory system in man (or humans)?


Give the main points of difference between respiration in plants and respiration in animals.


Which contains more carbon dixoide : exhaled air or inhaled air? Why?


One of the following organisms does not depend on the simple diffusion of gases for breathing and respiration. This organism is:


During the respiration of an organism A, 1 molecule of glucose produces 2 ATP molecules whereas in the respiration of another organism B, 1 molecule of glucose produces 38 ATP molecules.

(a) Which organism is undergoing aerobic respiration?
(b) Which organism is undergoing anaerobic respiration?
(c) Which type of organism, A or B, can convert glucose into alcohol?
(d) Name one organism which behaves like A.
(e) Name two organisms which behave like B.


What is the name of tissues which transport:

water and minerals in a plant?


Veins and arteries carry blood. Which of these carry blood back to the heart?


Answer the following in detail.

How is the process of cellular respiration different from breathing?


Give suitable explanation for the following :

Why does a person feel breathlessness at higher altitudes?


With regard to the respiratory system and the process of respiration in man, answer the following question: 

What is meant by :

  1. Residual air and
  2. Dead air space

The major fraction of CO2 released during cellular respiration is transported by the blood to the lung capillaries ______


With which of the following haemoglobin combines to form carboxyhaemoglobin?


What is common between extensive network of blood vessels around walls of alveoli and in glomerulus of nephron?


On a very cold morning, Boojho and Paheli were talking with each other as they walked down to their school. They observed that the air coming out of their mouth looked like smoke. They were amused and wondered how it happened. Help them find the answer.


The oxygen dissociation curve is a sigmoid curve and it shifts towards the right due to ______.


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