Refer to CBSE Class 7 Science Respiration in Organisms MCQs provided below. CBSE Class 7 Science MCQs with answers available in Pdf for free download. The MCQ Questions for Class 7 Science with answers have been prepared as per the latest syllabus, CBSE books and examination pattern suggested in Class 7 by CBSE, NCERT and KVS. Multiple Choice Questions for Chapter 10 Respiration in Organisms are an important part of exams for Class 7 Science and if practiced properly can help you to get higher marks. Refer to more Chapter-wise MCQs for CBSE Class 7 Science and also download more latest study material for all subjects
MCQ for Class 7 Science Chapter 10 Respiration in Organisms
Class 7 Science students should refer to the following multiple-choice questions with answers for Chapter 10 Respiration in Organisms in Class 7. These MCQ questions with answers for Class 7 Science will come in exams and help you to score good marks
Chapter 10 Respiration in Organisms MCQ Questions Class 7 Science with Answers
Respiration in Organisms
Question. The process of breakdown of food in the cell with the release of energy is called ________
(a) Respiration
(b) Inhalation
(c) Exhalation
(d) Breathing
Answer: A
Question. Taking in air rich in oxygen into the body is called _________
(a) Respiration
(b) Inhalation
(c) Exhalation
(d) Breathing
Answer: C
Question. Giving out of air rich in carbon dioxide is called __________
(a) Respiration
(b) Inhalation
(c) Exhalation
(d) Breathing
Answer: C
Question. An adult human being at rest breathes in and out for______ times in a minute
(a) 15-18
(b) 20-25
(c) 10-15
(d) 50-60
Answer: A
Question. During exhalation the size of the chest cavity ______
(a) Decreases
(b) Increases
(c) Remains the same
(d) Get out of the lungs
Answer: A
Question. To which disease is smoking linked ?
(a) Appendicitis
(b) Cancer
(c) Fever
(d) Anaemia
Answer: B
Question. Name the organism which breathes through its skin
(a) Cat
(b) Human beings
(c) Dog
(d) Earthworm
Answer: D
Question. The small openings in the body of a cockroach are called ( )
(a) Holes
(b) Spiracles
(c) Tracks
(d) Pores
Answer: B
Question. Name the organism that breathes through its lungs as well as its skin ( )
(a) Human being
(b) Frog
(c) Dog
(d) Earthworm
Answer: B
Question. The air tubes that an insect has are useful for the exchange of________( )
(a) Gases
(b) Liquids
(c) Solid s
(d) No exchange
Answer: A
Question. In cockroaches, air enters the body through ____________( )
(a) Lungs
(b) Gills
(c) Spiracles
(d) Skin
Answer: C
Question. During heavy exercise, we get cramps in the legs due to the accumulation of ( )
(a) Carbon dioxide
(b) Lactic acid
(c) Alcohol
(d) water
Answer: B
Question. Which statement is correct?
(a) Exhaled air contains more oxygen and less carbon dioxide.
(b) Exhaled air contains less oxygen and less carbon dioxide.
(c) Inhaled air contains equal amount of carbon dioxide and oxygen.
(d) Exhaled air contains more carbon dioxide and less oxygen.
Answer: D
Question. Which one of the following is an anaerobic organism ?
(a) yeast
(b) crow
(c) ant
(d) dog
Answer: A
Question. Which Of The Following Is Most Likely To Have A Much Higher Breathing Rate?
(a) Man
(b) Dog
(c) Sparrow
(d) Fish
Answer: D
Question. The most common substrate for respiration is
(a) fats
(b) amino acids
(c) glucose
(d) sucrose
Answer: C
Question. Air exhaled:
(a) has no moisture
(b) has more amount of oxygen
(c) has moisture
(d) has less amount of carbon dioxide
Answer: C
Question. Cockroaches breathe by using an organ called
(a) nose
(b) tracheae
(c) both (a) and (b)
(d) none of these
Answer: D
Question. Which of these are the organs of human respiratory system?
(a) Trachea
(b) Bronchus
(c) Alveolus
(d) All of these
Answer: D
Question. Breathing rate in human beings in normal condition is
(a) 12-15 times in a minute
(b) 15-18 times in a minute
(c) 18-22 times in a minute
(d) 22-25 times in a minute
Answer: B
Question. Which part of nose prevents the passage of smoke dust inside the body:
(a) hair
(b) nosal cavity
(c) nostrils
(d) none of these
Answer: A
Question. The percentage of oxygen in inhaled air is:
(a) 14.4%
(b) 4.4%
(c) 16.4%
(d) 21%
Answer: D
Question. Earthworms breathe through
(a) skin
(b) legs
(c) trachea
(d) nose
Answer: A
Question. Muscular floor of the chest cavity is called
(a) Rib cage
(b) Diaphragm
(c) Trachea
(d) Bronchus
Answer: B
Question. The end products of anaerobic respiration are:
(a) ethyl alcohol
(b) carbon dioxide
(c) both (a) and (b)
(d) none of these
Answer: C
Question. The rate of exchange of gases in plants is not as fast as in:
(a) animals
(b) insects
(c) birds
(d) human beings
Answer: A
Question. Which disease is linked to smoking ?
(a) malaria
(b) cholera
(c) typhoid
(d) lung cancer
Answer: D
Question. More energy is released in
(a) Breathing
(b) Fermentation
(c) Anaerobic respiration
(d) Aerobic respiration
Answer: D
Question. 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
Answer: C
Question. Name the organ of the body in which the blood is oxygenated.
(a) Heart
(b) Lungs
(c) Lever
(d) Pancreas
Answer: B
Question. Name the term which means ‘taking in of air rich in oxygen into the body’.
(a) Exhalation
(b) Inhalation
(c) Breathing
(d) Respiration
Answer: B
Question. Air tubes in insect is called
(a) Gills
(b) Air tube
(c) Air bladder
(d) Tracheae
Answer: D
Question. During inhalation the ribs:
(a) move outwards
(b) move downwards
(c) move upwards
(d) do not move at all
Answer: C
Question. Lime water turns milky due to the presence of which of the following gases?
(a) Carbon monoxide
(b) Carbon dioxide
(c) Nitrogen
(d) Oxygen
Answer: B
Question. The muscles of legs can be relieved by:
(a) massaging
(b) running
(c) exercising
(d) sleeping
Answer: A
Question. In Cockroaches air enters the body through:
(a) lungs
(b) gills
(c) spiracles
(d) skin
Answer: C
Question. All organisms are made of small microscopic units which cannot be seen with the naked eyes, called
(a) animals
(b) cells
(c) tissues
(d) organs
Answer: B
Question. The process of breakdown of food in the cell is known as
(a) breakdown process
(b) cellular respiration
(c) food breakdown
(d) none of these
Answer: B
Question. Chest cavity is surrounded by
(a) 12 pair of ribs
(b) 10 pair of ribs
(c) 11 pair of ribs
(d) 25 ribs
Answer: A
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CBSE Class 7 Science Chapter 10 Respiration in Organisms MCQs
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Chapter 10 Respiration in Organisms CBSE Class 7 MCQs Science
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CBSE MCQs Science Class 7 Chapter 10 Respiration in Organisms
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