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Animal Life Cycle: 4 stages (Egg -> Larva -> Pupa -> Adult) -…
Animal Life Cycle:
4 stages
(Egg -> Larva -> Pupa -> Adult)
Larva
(Feeding & Growth)
Do not resemble its adult
Moults many times
as it grows
Moulting is the shedding of
old exoskeleton
to allow insect/animals to grow larger
Eats a lot
(to store energy for growth & metamorphosis)
Eg: Mealworm Beetle
(entire life cyc on land)
Pupa
pupa lies freely on the ground
or among the grains/bran
DO NOT attached to leaves, branches, or walls.
Egg
adult buries her eggs in loose material
like soil, grains, or flour
(any hidden and protected place with food)
Larva
feed on grain, cereal, bran, flour,
or decaying plant matter where eggs were laid in
Pupa
(Development)
Do not eat,
it has food stored in its body
to provide it energy to grow and survive
Do not resemble
its adult
develop in a
pupal case
develop wings and
grows into adult
Do not move
Eg: Mosquito
(Life cyc
partly in water)
Pupa
Breathes through a breathing tube
lives near water surface
Egg
lay on surface of stagnent water
Larva
(Wriggler)
lives near water surface
eats a lot,
feed on microorganism
Breathes through a breathing tube
Pouring a layer of oil on surface of stagnant water
could prevent the larva and pupa from taking in oxygen through their breathing tubes, causing them to die
Eg:Butterfly
(entire life cyc on land)
Egg
laid on underside of leaves
to avoid predators spotting and eating
young can feed on leaves immediately
Eggs protected by hard shell
Larva
(Caterpillar)
Eats a lot,
feed on leaves
is a pest because it
destroy leaves of crops by eating them
Pupa
Attach to a leaf or twig
Adult
beneficial for
flowering plants
transfer pollen grains
from anthers to the stigma of flowers,
helping to pollinate them
feed on nectar
Adult
(Reproduction)
Lives on land
Emerges from pupal case
has
wings
,
can fly
Metamorphosis is the process in which an animal undergoes a series of body changes during its life cycle to become an adult.