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Class 9
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Life Cycle of a Mosquito
Life Cycle of a Mosquito
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1)
At which stage of a mosquito’s life cycle does moulting takes place?
Pupal stage
Adult stage
Larval stage
In between pupal and adult stage
2)
Why does only the female mosquito require a blood meal?
It does not like the taste of nectar.
Blood is a rich source of protein which is helpful to make eggs.
Blood helps her to fly long distances.
Blood is the only source of energy.
3)
What do the larvae feed on?
Decaying plant matter found on water surface.
Decaying plant matter found on land.
Fresh aquatic plant
Do not require food.
4)
Anopheles mosquito carries Plasmodium that causes malaria in which of the following?
Humans
Animals
Sparrows
Fishes
5)
The diagram given below represents the comma-shaped stage in a mosquito’s life cycle. In which stage is the mosquito shaped like a comma?
Egg stage
Larval stage
Pupal stage
Adult stage
6)
Larvae swim either through propulsion with their mouth brushes, or by jerky movements of their entire bodies, giving them the common name of _____.
Tumblers
Wigglers
Siphon
Trumpets
7)
The mosquito larvae spend most of their time hanging upside down at the surface, sucking in oxygen through ______________.
Tumblers
Trumpets
Siphon
Wiggler
8)
The mosquito pupae must take in oxygen from time to time through two breathing tubes known as ___________.
Wiggler
Trumpets
Siphon
Tentacle
9)
Which of the following describes the process of moulting?
Eggs of a mosquito hatch.
A larva sheds its outer skin.
A larva turns into a pupa.
An adult mosquito emerges from the pupa.
10)
Name a common disease caused by mosquitoes.
Malaria
AIDS
Cancer
H1N1
11)
___________mosquitoes have the mouth parts necessary for sucking blood.
Only female
Only male
Both male and female
Neither male nor female
12)
A mosquito has four stages in its life span: (I) Egg stage (II) Larva stage (III) Pupa stage (IV) Adult stage. The mosquito requires food only during which stages?
I, II, III, IV
I, II, IV
II, IV
IV only