In this page we have Respiration in Organisms Important Questions for Class 7 Science . Hope you like them and do not forget to like , social share
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i. ___________ and ___________ are two by-products of respiration.
ii. Lactic acid is also called as __________
iii. Yeast breaks down glucose into ____________ and carbon di-oxide.
iv. The accumulation of ____________ causes muscle cramps.
vi. The____________ is a tube-like structure present in human respiratory system and is commonly known as wind pipe.
vii. ___________ is the muscular partition which between chest and abdominal cavity.
ix. Frogs breathe both by ___________ and __________
x. Plants get oxygen by the process of ____________
xi. Amoeba breathes through its ________ Answer
Carbon dioxide, water
Lactate or milk acid
Lungs and moist skin
a. ________ is utilised during respiration to release energy.
b. ________ gas is released when human beings respire.
c. ________ is not required for anaerobic respiration.
d.The air in the alveoli is called ________ air.
e.Below the rib cage there is a sheet of muscles called the ________.
f.In earthworm, the exchange of gases takes place through the ________.
g.Gaseous exchange takes place in butterflies through ________.
h.The ________ is commonly called the windpipe.
i.Fish respire through ________.
j.Respiration through the skin is called ________.
k.Anaerobic respiration produces ________.
l. ________ transport oxygen to every part of the body.
m.In blood a pigment called ________ bind with oxygen.
n.Muscle cramps occur due to accumulation of ________ in the muscles.
o.In most vertebrates gaseous exchange occurs through ________.
p.During ________ the lungs contract.
q.Anaerobic respiration in human beings takes place during ________.
r.The breakdown of food in cells using oxygen with the release of energy is called ________.
s.________ turns limewater milky.
t.The exchange of gases in the leaves of plants takes place through ________. Answer
i. Name the term used for openings in the nose
ii. What name is given to the part of trachea entering in the lungs?
iii. Name the organs through which insects take in air
iv. Which is the breathing organ in unicellular organisms?
v. Which organ extracts dissolved oxygen from water in fishes?
vi. Name the term used for one inhalation plus one exhalation.
vii. Which special organs are found only in insects and not in any other group of animals?
viii. Where does exchange of gases take place in lungs?
ix. What ATP stands for? Answer
Multiple Choice Questions
Yeast is used in wine and beer industries because it respires
(a) aerobically producing oxygen.
(b) aerobically producing alcohol.
(c) anaerobically producing alcohol.
(d) anaerobically producing CO2.
During the process of exhalation, the ribs move
(a) down and inwards.
(b) up and inwards.
(c) down and outwards.
(d) up and outward.
Earthworms and frogs breathe through their skin because of
which the skin of both the organisms is
(a) moist and rough.
(b) dry and rough.
(c) dry and slimy.
(d) moist and slimy.
Fish breathe with the help of gills which are richly supplied with blood vessels. The gills help the fish to
(a) take in oxygen from air.
(b) release waste substances in water
(c) absorb nutrients present in water.
(d) take in oxygen dissolved in water. Answer 4-7
2. The process of breakdown of food in the cell with the release of energy is called ______respiration
5. The taking in of air rich in oxygen into the body is called _______ Down
1. The process of giving out of air rich in carbon dioxide is known as _____
3. respiration with oxygen
4. They are single-celled organisms.
6. respiration without oxygen Answer
Give reasons why-
i. The amount of nitrogen gas remains same in inhaled and exhaled air.
ii. Fishes die when they are taken out of water.
iii. Carbon monoxide is a harmful gas.
iv. Mountaineers carry oxygen cylinder with them.
Why do we feel hungry after the physical activity?
Why do you breathe through nose and not through mouth?
Why does lime water turn milky when we blow into it?
Differentiate between breathing and respiration.
Explain the mechanism of breathing in human beings through a flowchart.
What is breathing?
What is cellular respiration?
What is the role of stomata in plant cells?
In which body part does gaseous exchange occur in fish?
What is breathing rate?
What is respiration without oxygen called? How do plants take in air?
Describe gaseous exchange in the human body?
Differentiate between inhalation and exhalation?
Describe how inhalation and exhalation takes place in the human respiratory system?
Name the structures of the human respiratory system and write their functions starting from the organ through which the air enters?
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