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प्रश्न
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
उत्तर
- The air tubes of insects → Trachea
- Skeletal structures surrounding chest cavity → Ribs
- Muscular floor of chest cavity → Diaphragm
- Tiny pores on the surface of leaf → Stomata
- Small openings on the sides of the body of an insect → Spiracles
- The respiratory organs of human beings → Lungs
- The openings through which we inhale → Nostrils
- An anaerobic organism → Yeast
- An organism with tracheal system → Ant
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संबंधित प्रश्न
What organs are attached to the two bronchi?
In the lungs what substance is taken into the body?
Fill in the following blank with suitable word:
The actual exchange of gases takes place in the ___________ of the lungs.
Give the main points of difference between respiration in plants and respiration in animals.
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
An organism X having breathing organs A lives on land. When organism X goes underwater, it cannot survive for a long time unless carrying an oxygen cylinder. On the other hand, the organism Y having breathing organs B always lives in water and if taken out of the water, it dies after a short while. A third organism Z having breathing organs C and D which lives on the banks of ponds, lakes, and rivers can survive on land as well as in water equally well.
(a) What could organism X be? Name the breathing organs A.
(b) What could organism Y be? Name the breathing organs B.
(c) What could organism Z be? Name the breathing organs C and D.
(d) Out of X, Y, and Z, which organism is (i) amphibian, (ii) aquatic, and (iii)
terrestrial?
Fill in the following blanks with suitable words:
The ___________ blood cells make antibodies whereas ___________ blood cells help in respiration.
It has been found that people living in very high mountains have many more red corpuscles in their blood than people living in plains. Which one of the following best accounts for this phenomenon?
There is a pair of bean-shaped organs P in the human body towards the back, just above the waist. A waste product Q formed by the decomposition of unused proteins in the liver is brought into organ P through blood by an artery R. The numerous tiny filters S present in organ P clean the dirty blood by removing the waste product Q. The clean blood goes into circulation through a vein T. The waste substance Q, other waste salts, and excess water form a yellowish liquid U which goes from organ P into a bag-like structure V through two tubes W. This liquid is then thrown out of the body through a tube X.
(a) What is (i) organ P, and (ii) waste substance Q?
(b) Name (i) artery R, and (ii) vein T.
(c) What are tiny filters S known as?
(d) Name (i) liquid U (ii) structure V (iii) tubes W, and (iv) tube X.
State one function of the following:
Diaphragm
Give Suitable Explanation for the Following :
Why do you shiver and why do your teeth chatter when it is very cold in winter?
Answer the following question.
How is O2 and CO2 transported in human beings?
Define respiration.
The major fraction of CO2 released during cellular respiration is transported by the blood to the lung capillaries ______
Which is the correct sequence of air passage during inhalation?
Which of the following equations is the summary of photosynthesis?
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.
