Last updated on December 14th, 2023 at 08:36 am
Respiration in Organisms Class 7 MCQ
Respiration is essential for the survival of living organisms because it:
a. Releases glucose from the food
b. Releases energy from the food
c. Converts water into oxygen
d. Converts carbon dioxide into glucose
Answer: (b) Releases energy from the food
During cellular respiration, glucose is broken down into:
a. Oxygen and water
b. Carbon dioxide and water
c. Glucose and water
d. Oxygen and glucose
Answer: (b) Carbon dioxide and water
What is the process of respiration in which oxygen is taken inside the body and carbon dioxide is given out?
a. Cellular Respiration
b. Internal Respiration
c. External Respiration
d. Anaerobic Respiration
Answer: (c) External Respiration
Which respiratory organ do fish use to respire?
Answer: (c) Gills
In humans, inhaled air passes through the nostrils and then into the lungs through the:
Answer: (b) Windpipe
What type of respiration occurs during heavy exercise when the supply of oxygen to muscle cells is insufficient?
Answer: (c) Anaerobic Respiration
Which type of respiration combines food molecules with oxygen inside cells into carbon dioxide and water along with energy?
Answer: (d) Aerobic Respiration
During inhalation, our lungs:
Answer: (c) Expand
In which part of the plant does gaseous exchange primarily occur during respiration?
Answer: (d) Leaves
Which type of organism respires through its entire body surface?
Answer: (d) Insect
In anaerobic respiration, food molecules are broken down without using:
Answer: (c) Oxygen
The respiratory process that occurs through the skin in earthworms is known as:
Answer: (b) Cutaneous respiration
What is the primary purpose of external respiration (breathing) in animals?
To produce glucose
To eliminate carbon dioxide
To convert food into energy
To exchange oxygen and carbon dioxide
Answer: (d) To exchange oxygen and carbon dioxide