Chapter 19: Respiration & Food Energy - Science For Grade 7(Science ) Questions and Answers

Question 1. Asthma can get worse due to
  1.    bacteria
  2.    viruses
  3.    insects
  4.    dust
Explanation:-
Answer: Option B. -> viruses
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2. When we inhale
  1.    the diaphragm is pushed upwards and the rib cage downwards
  2.    both diaphragm and rib cage are pushed downwards
  3.    the diaphragm is pulled downwards and the rib cage upwards
  4.    the diaphragm is pushed upwards and the rib cage is pulled downwards
Explanation:-
Answer: Option C. -> the diaphragm is pulled downwards and the rib cage upwards
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3. The number of viruses which an average sneeze can spread in 10 meters area, is
  1.    1000
  2.    10000
  3.    100000
  4.    1000000
Explanation:-
Answer: Option C. -> 100000
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 4. The process of taking oxygen in is known as
  1.    inhaling
  2.    exhaling
  3.    respiring
  4.    synthesizing
Explanation:-
Answer: Option A. -> inhaling
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 5. In respiration the raw products are
  1.    oxygen and carbon
  2.    oxygen and food
  3.    oxygen and glucose
  4.    food and carbon
Explanation:-
Answer: Option C. -> oxygen and glucose
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 6. In respiration, raw material is converted into
  1.    water only
  2.    carbon dioxide and energy
  3.    water and energy
  4.    water, carbon dioxide and energy
Explanation:-
Answer: Option D. -> water, carbon dioxide and energy
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 7. Cold is caused by
  1.    bacteria
  2.    viruses
  3.    insects
  4.    dust
Explanation:-
Answer: Option B. -> viruses
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 8. The process of giving out breath is known as
  1.    inhaling
  2.    exhaling
  3.    respiration
  4.    evaporation
Explanation:-
Answer: Option B. -> exhaling
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 9. Every single cell of the body requires
  1.    oxygen only
  2.    food only
  3.    carbon dioxide and food
  4.    oxygen and food
Explanation:-
Answer: Option D. -> oxygen and food
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 10. The carbon dioxide is removed from
  1.    anus as feces
  2.    lungs while inhaling
  3.    lungs while exhaling
  4.    kidneys
Explanation:-
Answer: Option C. -> lungs while exhaling
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
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