GENERAL INSTRUCTIONS (Please read the following instructions very carefully)
1. Question marks are mentioned with each Question.
2. Please write neat and clean hand-writing on Answer Sheet. Use Margin on right side and left side of Answer Sheet.
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4. Do not click the button Submit Test before completing the paper on Answer Sheet.
5. This is a ONE TIME attempt test. Once started, it cannot be reversed or attempted again.
6. Take photo of all the Sheets and make single pdf file.
1
The number of times a person breathes in one minute is known as ________________ .
Breathing rate
Respiration
Lungs
None of these.
2
During running or doing heavy physical work, the breathing may increase up to _____________ breaths per minute.
30
25
26
3
Aerobic respiration occurs in the presence of ____________ .
NO2
CO2
O2
None of these .
4
Gills are respiratory organ in _________ .
Fish
Earthworm
Amoeba
5
The equation in words for aerobic respiration is _____________________ .
Glucose Carbon dioxide + Water + Energy
Glucose hydrogen + Water + Energy
6
Aerobic respiration takes place in the presence of ____________________
Nitrogen
Phosphorus
Oxygen
7
Earthworm breathe through their ________________ .
Head
Skin
8
A normal human being breathes in ______________ times per minute.
12 - 15
16 -18
15 -20
9
The complete process of Anaerobic Respiration takes place in the _____________
Cytoplasm
Mitochondria
Ribosome
10
Which of the following are correct ?
(a) Respiration is the biochemical process which involves breakdown of food material in the presence or absence of oxygen gas.
(b) In Aerobic respiration only 2 molecules of ATP are formed.
Only (a) is correct.
Only (b) is correct.
Both (a) and (b) is correct.
11
(a) The word aerobic means in presence of oxygen.
(b) These food molecules are then broken down into carbon dioxide and water to release energy.
Only (a) is correct .
Only (b) is correct .
Both (a) and (b) is correct .
12
(a) Respiration is the biochemical process which involves breakdown of food material in the presence or absence of carbon gas.
(b) In Aerobic respiration 38 molecules of ATP are produced by the complete oxidation of one gram mole of glucose
13
(a) Plants respire through tiny holes or openings called stomata.
(b) Stomata trap air and exchange of gases takes place inside plant cell .
Starch(sugar) + oxygen Energy + Carbon dioxide + water
14
(a) The number of times a person breathes in one minute is known as his breathing rate.
(b) A normal human being breathes in 34-52 times per minute .
(c) The heartbeat can be heard by an instrument called stethoscope .
Only (a) and (b) is correct.
Only (b) and (c) is correct.
Only (a) and (c) is correct .
All of these.
15
(a) In unicellular organisms, simple diffusion through body surface is sufficient for exchange of gases necessary for respiration because the cell is in continuous contact with the external environment.
(b) In simple multicellular organisms like poriferans and coelenterates, respiration occurs by simple diffusion because most of their cells are in contact with internal environment.
(c) Humans a special system called as respiratory system is required for the exchange of gases.
Only (a) and (b) is correct .