Last updated on December 14th, 2023 at 08:36 am
Which of the following animals respires through its thin, moist, and smooth skin when in water and by lungs when on land?
Fish
Frog
Insect
Earthworm
Answer: (b) Frog
What is the name of the openings in stems that allow gaseous exchange by diffusion during respiration?
Lenticels
Stomata
Bronchi
Trachea
Answer: (a) Lenticels
What happens to the respiratory rate during external respiration when an organism engages in heavy exercise?
The respiratory rate decreases
The respiratory rate remains the same
The respiratory rate increases
The respiratory rate stops temporarily
Answer: (c) The respiratory rate increases
What is the process in which food molecules are combined with oxygen and get oxidized inside cells into carbon dioxide and water along with energy?
Anaerobic Respiration
Internal Respiration
External Respiration
Aerobic Respiration
Answer: (d) Aerobic Respiration
Which gas is used to breakdown glucose into carbon dioxide and water during respiration?
Carbon dioxide
Oxygen
Nitrogen
Hydrogen
Answer: (b) Oxygen
The breakdown of glucose occurs in the cells of an organism and is known as:
Photosynthesis
Cellular respiration
Digestion
Fermentation
Answer: (b) Cellular respiration
What is the term for respiration that occurs with the use of oxygen?
Anaerobic respiration
External respiration
Aerobic respiration
Internal respiration
Answer: (c) Aerobic respiration
During heavy exercise when oxygen supply to muscle cells is insufficient, what type of respiration occurs?
Aerobic respiration
Internal respiration
External respiration
Anaerobic respiration
Answer: (d) Anaerobic respiration
What is the purpose of breathing in the process of respiration?
To release energy from glucose
To take in oxygen-rich air
To convert carbon dioxide into oxygen
To produce glucose from water and carbon dioxide
Answer: (b) To take in oxygen-rich air
What happens to the lungs during inhalation?
They contract
They remain unchanged
They expand
They release carbon dioxide
Answer: (c) They expand
In which animals are the respiratory organs and process of breathing similar to those in humans?
Insects
Fish
Cows and buffaloes
Earthworms
Answer: (c) Cows and buffaloes
How does gaseous exchange occur in earthworms, fishes, and insects, respectively?
Through gills, tracheae, and moist skin
Through tracheae, moist skin, and gills
Through moist skin, gills, and tracheae
Through gills, moist skin, and tracheae
Answer: (b) Through tracheae, moist skin, and gills
