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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.
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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संबंधित प्रश्न
How are oxygen and carbon dioxide transported in human beings?
What is the name of tiny air-sacs at the end of smallest bronchioles in the lungs?
What is the function of the respiratory system?
Which contains more carbon dixoide : exhaled air or inhaled air? Why?
"Respiration is a vital function of the body". Justify this statements.
Which of the following is not produced during anaerobic respiration in unicellular fungus?
Which of the following is the correct sequence of air passage during inhalation?
(a) nostrils → larynx → pharynx → trachea → lungs
(b) nasal passage → trachea → pharynx → larynx → alveoli
(c) larynx → nostrils → pharynx → lungs
(d) nostrils → pharynx → larynx → trachea → alevoli
Which of the following statements are true about respiration?
(i) during inhalation, ribs move inward and diaphragm is raised.
(ii) the gaseous exchange takes place in the alveoli.
(iii) haemoglobin has greater affinity for carbon dioxide than oxygen.
(iv) alveoli increase surface area of the exchange of gases
In cockroaches, air enters the body through:
Name the body structure concerned with the given functional activity:
Prevents food from entering the trachea during swallowing.
State one function of the following:
Ciliated epithelium lining the respiratory tract
Give suitable explanation for the following :
Why does a person feel breathlessness at higher altitudes?
Why is respiration essential for life?
Identify the CORRECT sequence of events for the transport of respiratory gases.
Which of the following indicates the shift of oxyhaemoglobin dissociation curve due to change in ppC02 in blood?
What is the ppCO2 in alveolar air?
______ refers to the physical process by which gaseous exchange takes place between the atmosphere and the lungs.
The partial pressure of oxygen of blood in pulmonary capillaries is i ______ mrnHg while in alveolar air it is ii ______ mmHg.
Which of the following statement(s) is (are) true about respiration?
- During inhalation, ribs move inward and the diaphragm is raised
- In the alveoli, exchange of gases takes place i.e., oxygen from alveolar air diffuses into blood and carbon dioxide from the blood into the alveolar air
- Haemoglobin has a greater affinity for carbon dioxide than oxygen
- Alveoli increase surface area for the exchange of gases
Explain the three pathways of breakdown in living organisms.
