RECAP THE CONCEPTS
All living things go through a life cycle. A cycle is a pattern that repeats itself.
Living things reproduce to ensure the continuity of their own kind.
Animals with 3-stage life cycle:
Chicken
Egg (hard shell) ===>
Chick (have wings) ===>
Adult Chicken (have wings)
Cockroach
Egg (in egg case) ===>
Nymph (moults, no wings) ===>
Adult Cockroach (have wings)
Dragonfly
Egg (in water) ===>
Nymph (moults, breathes using gills to take in dissolved oxygen from the water) ===>
Adult Dragonfly (no gills, breathes through holes in its body, have wings)
Frog
Egg (in water) ===>
Tadpole (breathes using gills) ===>
Adult Frog (lives on land, takes in atmospheric air (oxygen) using lungs and moist skin, also able to take in dissolved oxygen through their moist skin)
Animals with 4-stage life cycle:
Butterfly
Egg (under a leaf) ===>
Larva - Caterpillar (moults to grow bigger) ===>
Pupa (does not eat or moult) ===>
Adult Butterfly
Mosquito
Egg (in stagnant water) ===>
Larva (Wriggler) (breathes using a breathing tube to take in atmospheric air (oxygen) above the water surface) ===>
Pupa (breathes using breathing tubes) ===>
Adult Mosquito (comes out of the water, with wings)
Practice: Mastering Keywords
Press submit only after selecting all the correct answers that apply.