Olympiad Science - Respiration in Organisms
Exam Duration: 45 Mins Total Questions : 30
Identify 'X' in the given equation of aerobic respiration.
- (a)
Water
- (b)
Oxygen
- (c)
Ethyl alcohol
- (d)
Nitrogen
The following word equation shows a chemical process that take place in an organism Y
\(\boxed { Glucose\rightarrow Ethylalcohol+carbondioxide } \)
What is organism 'Y'?
- (a)
Algae
- (b)
Protozoan
- (c)
Yeast
- (d)
Hydra
The classification table given below shows how different organisms breathe
- (a)
Tadpole-Whale-Earthwarm
- (b)
Fish-Crocodile-Cockroach
- (c)
Frog-Shark-Toad
- (d)
Prawn- Grasshopper- cockroach
When we inhale, we breathe in air into the lungs. What do we breathe out when we exhale?
- (a)
Only oxygen gas
- (b)
Only hydrogen gas
- (c)
Air that has more oxygen than inhaled air
- (d)
Air that has more carbon dioxide than inhaled air.
What isthe function of the hair in the nose?
- (a)
To secrete mucus.
- (b)
To trap dust particles
- (c)
To protect the mucus glands
- (d)
To prevent germs from entering the lungs.
Identify the labelled parts P,Q and R in the figure given below.
- (a)
Bronchus -Bronchiole- Alveolus
- (b)
Trachea- Alveolus -Bronchus
- (c)
Bronchus- Bronchiole -Diaphragm
- (d)
Trachea-Alveolus- Diaphragm
Which of these are the organs of human respiratory system?
- (a)
Trachea
- (b)
Alveolus
- (c)
Bronchus
- (d)
All of these
What will happen when the thin rubber sheet is pushed upwards?
- (a)
Air is pulled in
- (b)
Air is forced out
- (c)
Air pressure in the bell jar increases
- (d)
No change
What is the end product of glucose in the abscence of oxygen in muscle cells?
- (a)
Carbon dioxide
- (b)
Lactic acid
- (c)
Ethanol
- (d)
Water
Which of the following organisms respire through tracheal system?
- (a)
Earthworm
- (b)
Cockroach
- (c)
Fish
- (d)
Frog
Breathing involves inspiration and expiration process.Which of the following take place during inspiration?
- (a)
Ribs move downward and outward
- (b)
Ribs move upward and inward
- (c)
Ribs move downward and inward
- (d)
Ribs move upward and outward.
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.
What happens when we breathe in?
(i) Size of our chest increases.
(ii) Size of our chest decreases.
(iii) Carbon dioxide is removed from our body.
(iv) Air enters our lungs.
- (a)
(i) and (iii) are correct
- (b)
(i) and (iv) are correct
- (c)
(ii) and (iii) are correct
- (d)
(ii) and (iv) are correct
Respiration is an example of which of the following processes?
- (a)
Anabolic
- (b)
Catabolic
- (c)
Metabolic
- (d)
Both (A) and (C)
Which of the following terms is also called anaerobic respiration?
- (a)
Fermentation
- (b)
Imbibition
- (c)
Transportation
- (d)
Osmosis
What is the function of the stomata?
- (a)
To take in water
- (b)
To trap sunlight
- (c)
To take in gases
- (d)
To give out food
In which of the following processes gills are used for respiration?
- (a)
Cutaneous respiration
- (b)
Branchial respiration
- (c)
Terrestrial respiration
- (d)
Pulmonary respiration
Lenticels are found in which of the following parts of a plant?
- (a)
The stem in which secondary growth has taken place.
- (b)
The root where secondary growth has not taken place
- (c)
The roots as well as the stem where secondary growth has occurred
- (d)
The leaves and roots
Which of the following prevent the entry of food into the trachea?
- (a)
Epiglottis
- (b)
Glottis
- (c)
Hard palate
- (d)
Soft palate
Earthworms respire through which of the following organs?
- (a)
Moist skin
- (b)
Ctenidia
- (c)
Clitellum
- (d)
Typhlosole
In which of the following habitats gills are used for respiration?
- (a)
Terrestrial respiration
- (b)
Aquatic respiration
- (c)
Pulmonary respiration
- (d)
All types of respiration
Which of these organisms have lungs as respiratory organs?
- (a)
Cockroaches
- (b)
Earthworms
- (c)
Star fishes
- (d)
Rabbits
What is the correct sequence for the air to exhaled out from the lungs?
R - Bronchus
S - Trachea
T - Alveolus
U - Bronchiole
- (a)
S\(\rightarrow \)U\(\rightarrow \)R\(\rightarrow \) T
- (b)
S\(\rightarrow \) R\(\rightarrow \) U\(\rightarrow \) T
- (c)
T \(\rightarrow \) U\(\rightarrow \) R\(\rightarrow \) S
- (d)
T \(\rightarrow \)R\(\rightarrow \) U\(\rightarrow \) S
Analysis of a sample of air gives the following details.
Nitrogen | Oxygen | Carbon dioxide |
78.0% | 16.4% | 4.4% |
From which of the following sources the sample of air is most probably taken
- (a)
Dissolved air from pond water
- (b)
Fresh air from a field
- (c)
Exhaled air
- (d)
inhaled air.
In anaerobic respiration, glucose is broken down into which of the following substances?
- (a)
Carbon dioxide and water
- (b)
Carbon dioxide and oxygen
- (c)
Alcohol and carbon dioxide
- (d)
Alcohol and oxygen.
Which of the following diagram correctly illustrates the passage of oxygen in the respiratory system?
- (a)
(A) Nose \(\rightarrow \) Lungs \(\rightarrow \) Wind pipe \(\rightarrow \)Blood
- (b)
Nose \(\rightarrow \) Blood \(\rightarrow \) Wind pipe \(\rightarrow \) Lungs
- (c)
Nose \(\rightarrow \) Blood \(\rightarrow \) Lungs \(\rightarrow \) Wind pipe
- (d)
Nose \(\rightarrow \) Wind pipe \(\rightarrow \) Lungs-blood
Which statement is NOT correct?
- (a)
Taking in of oxygen is inhalation
- (b)
Taking in of carbondioxide is inhalation
- (c)
Breathing rate is number of inhalation and exhalation in one minute.
- (d)
Giving out of carbondioxide is exhalation.
Which of the following forms the floor of the chest cavity?
- (a)
Lungs
- (b)
Membrane
- (c)
Diaphragm
- (d)
Pleura
Which of the following animals breathe through their skin and lungs?
- (a)
Fish
- (b)
Snake
- (c)
Frog
- (d)
Earthworm
In fishes gills are the respiratory organs. Gills are projections of which of the following parts?
- (a)
Nostril
- (b)
Skin
- (c)
Alimentary canal
- (d)
None of these