Worksheets8.1 Biology
Total questions: 9
Worksheet time: 2mins
All of the organisms below use blood to carry oxygen except
Insects
Humans
Amphibians
Fish
Alveolus is present in
Fish gills
Human lungs
Frog skin
Frog lungs
How do frog adapt to breathe?
Moist skin
Dense network of blood capillaries under skin
Folded surface of lungs
Thin skin
Which arrow points to lamella?
A
B
C
D
Why frog is more vulnerable to air pollutants than human?
Their skin is very permeable and is exposed to air pollutants
They breathe more air
They like to be poisoned
The pollutants prefer to poison frogs
Insects will suffocate when
its abdomen is immersed in water
its head is immersed in water
Insects cannot suffocate
Respiratory system of insect is called
Trachea system
Tracheal system
Tracheole system
Air sac system
Spiracle system
The structure in the blank is:
Gills --> Gill arch --> _________ -->Lamella
Operculum
Gill filament
Gill raker
Lamella holder
Sum of surface area of alveoli in human is about 100 squared metre. How is it useful? (Choose 2)
Increase TSA/V ratio
Increase rate of diffusion
Deliver respiratory gas efficiently
Decrease distance for diffusion
