Question

a.
A. Choose the correct alternative:
1. Stomata are surrounded by kidney-shaped cells called
a.guard cells
b. subsidiary cells
c. kidney cells
d. none of the above
2. Insects like cockroach and grasshopper have small openings called
a.trachea
b. spiracles
c.tracheoles
d. filaments
3. Frog, when in water, respires through the skin and when on land it uses
a.gills
b. trachea
c.lungs
d. air tubes
4. In fish, blood absorbs oxygen from water and releases CO2 through the
a.air pipe
b. gill filaments
c .tracheoles
d. spiracles
5. The human respiratory system constitutes
a.lever
b. heart
c.trachea
d. none of them
​

Answer 1

Answer:

1.a.guard cells

2.b.spiracles

3.c.lungs

4.b.gill filaments

5.c.trachea

hope it helps you

thank you

Answer 2

Answer:

2.a trachea. 3. lungs. 5. heart.