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प्रश्न
Out of photosynthesis and respiration in plants, which process occurs:
(a) all the time?
(b) only at daytime?
उत्तर
(a) Respiration occurs all the time.
(b) Photosynthesis occurs only at daytime as it can take place only in the presence of sunlight.
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संबंधित प्रश्न
What advantage over an aquatic organism does a terrestrial organism have with regard to obtaining oxygen for respiration?
Given below is a square of letters in which are hidden different words related to respiration in organisms. These words may be present in any direction − upwards, downwards, or along the diagonals. Find the words for your respiratory system. Clues about those words are given below the square.
- The air tubes of insects
- Skeletal structures surrounding chest cavity
- Muscular floor of chest cavity
- Tiny pores on the surface of leaf
- Small openings on the sides of the body of an insect
- The respiratory organs of human beings
- The openings through which we inhale
- An anaerobic organism
- An organism with tracheal system
The trachea divides into tow tubes at its lower end. What is the name of these tubes?
Explain why, when air is taken in and let out during breathing, the lungs always contain a residual volume of air.
Describe the process of respiration in fish.
Describe the process of respiration in the following part of a plant:
Stem
Give the main points of difference between respiration in plants and respiration in animals.
What type of repiration takes place in yeast?
Which of the following is not produced during anaerobic respiration in unicellular fungus?
One of the following organisms does not depend on the simple diffusion of gases for breathing and respiration. This organism is:
Consider the following chemical reactions which take place in different organisms/tissues under various conditions:
(i) Glucose → Respiration ">Ethanol + Carbon dioxide + Energy
(ii) Glucose→ Respiration ">Carbon dioxide + Water + Energy
(iii) Glucose → Respiration "> Lactic acid + Energy
(a) Name one organism which respires according to equation (i) above.
(b) Name one organism which respires according to equation (ii) above.
(c) When and where does respiration represented by equation (iii) above take place?
(d) Which equation/equations represent aerobic respiration?
(e) Which equation/equations represent anaerobic respiration?
(f) Which of the above reactions produces the maximum amount of energy?
With which human organ system (or human systems) is alveoli associated?
Answer this question.
Name the organ of respiration in fishes.
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
How is the respiratory passage kept free of dust particles?
Give suitable explanation for the following :
Why does a person feel breathlessness at higher altitudes?
Draw a diagram of the human respiratory system and label - pharynx, trachea, lungs, diaphragm and alveolar sac on it.
What is the ppCO2 in alveolar air?
Which of the following is an incorrect statement?
