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WorksheetsSCIENCE 2.0 FORM 3
Total questions: 20
Worksheet time: 12mins
Which of the following has the function of protecting the lungs?
Alveolus
Bronchus
Diaphragm
Rib cage
Which of the following contains little oxygen but has more carbon dioxide?
Red blood cells
White blood cells
Oxygenated blood
Deoxygenated blood
Which of the following is INCORRECT about exhalation?
Intercoastal muscle relax
Diaphragm curve upward
Air pressure in the thoracic cavity decrease
Air pressure in the thoracic cavity increase
Which gas that the composition remains unchanged during breathing process
Carbon dioxide
Hydrogen
Nitrogen
Oxygen
What is the name of the process occurs?
Excretion
Absorption
Osmosis
Diffusion
Which of the following is the adaptation of the alveolus to ensure an efficient gas exchange?
Folded surface
Thick wall
Small alveolus
Moist wall
Which of the following is INCORRECT about exchange of gases in the alveolus?
Blood capillaries that leave the alveolus have high concentration of oxygen and low concentration of carbon dioxide
The wall of alveolus is thinner than the wall of blood capillaries
Alveolus has higher concentration of oxygen compared to the concentration oxygen in blood capillaries
Carbon dioxide diffuse out of blood capillaries into the alveolus and exits from the body during exhalation
What is the type of respiratory disease caused by damaged alveoli?
Emphysema
Bronchitis
Asthma
Lung cancer
Cigarette smoke contains carbon monoxide. What is the effect of this toxic substance to the human respiratory system?
Disturb the formation of oxyhaemoglobin and causes the cell not to receive sufficient oxygen
Main cause for emphysema
Causes children to have bronchitis
Disturb the diffusion of oxygen in the lungs and causes asthma
What happen to the respiratory system during this activity?
The rate of respiration decreases
Partial pressure of oxygen in the bloodstream increases
Partial pressure of carbon dioxide in the bloodstream increases
The rates of breathing and heartbeat increases
Which animal has a tracheal system?
Fish
Frog
Bird
Grasshopper
An insect respiratory system has all the followings except...
Trachea
Tracheole
Lamella
Spiracles
The followings are the adaptations of the gills for an efficient gaseous exchange except...
Large number of filament and lamella
Moist surface on skin
Countercurrent flow of water and blood in gills
Movement of mouth cavity to allow gas to enter
Fresh fish have red gills. Why?
Because the fish have just died
Because it has just been caught
Because it has microorganism that live on it
Because it still has oxygenated blood in gills
Which of the following is true about frog respire in water?
I. It has moist skin that very permeable to gases
II. Large network of blood capillaries surrounded it lungs
III. It has tracheal system that has many air tubes
IV. Dense network of blood capillaries under the skin
I and II
II and III
III and IV
I and IV
What is the function of aerial roots of mangrove plants?
To carry out photosynthesis process
To carry out excretion process
To perform respiration
To carry out the exchange gaseous process
How can carbon dioxide diffuse into the plant cells through stoma?
There is the difference in concentration of carbon dioxide in the cells and surrounding
Using guard cells which control the opening of stoma
Through osmosis process in the guard cells
Through the guard cells which contain chloroplast
When is the movement of carbon dioxide, oxygen and water vapour in and out from the leaf is greater?
When the stomata are open
When the stomata are close
When cool and humid
When hot and dry
What are the effects of haze and dust on the survival of plants?
I. Reduce sunlight from reaching the plants
II. Food shortage
III. Reduce agriculture yield
IV. Prevent gaseous exchange between plants and surrounding
I and II
II and III
III and IV
I and IV
What happens to the shape of guard cells during the day?
I. Flaccid
II. Turgid
III. Curved
IV. Straight
I and II
II and III
III and IV
I and IV
