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
and comment at the end of the page.
Fill in the blanks
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 ________
Very short answer questions
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?
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.
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.
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 _______
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
Unscramble the Jumbled word
- Carbon dioxide, water
- Lactate or milk acid
- Lactic acid
- Lungs and moist skin
- Cell membrane
- Cell membrane
- Adenosine Tri-Phosphate
link to this page by copying the following text
Class 7 Maths
Class 7 Science