Basic
What are the 2 types of life cycles?
3-stage life cycle and 4-stage life cycle
What are the 2 types of the 3-stage life cycle?
Egg > Young > Adult
Egg > Nymph > Adult
What are the stages in a 4-stage life cycle?
Egg > Larva > Pupa > Adult
What are needed for germination of a seed?
Water, Oxygen and Warmth
What does a life cycle show?
It shows the different stages that an organism undergoes as it develops
What is the difference between a nymph and a young?
Nymphs are used for the life cycles of insects whereas a young stage is used for non-insects.
Name 2 animals that have 4-stage life cycles.
Mosquito, Fly, Mealworm beetle, butterfly, moth, ladybug
Seeds do not need food to develop. Do you agree? Explain your answer.
No. Seeds receive their food from its seed leaf instead of the environment.
Does the life cycle end at the adult stage? Why?
No. If it stops at the adult stage, the species will be extinct.
Name an animal that has young as one of its stage and another animal that has nymph as one of its stage.
Young > Non-insects
Nymph > Insects such as grasshopper, cockroaches, dragonfly
What are the 2 differences between a larva and pupa stage?
A larva can moult and feed while a pupa cannot moult and feed.
What happens to the seed leaf when the seed begins to germinate? Why?
It will become smaller as the seed has absorbed nutrients from the seed leaf.
What are the differences between a nymph stage and its adult stage?
Ability to reproduce, Wings
What is moulting and why is it important?
It is the shedding of its outer covering/old skin. It allows the larva to grow bigger in size.
Which part of the seed will emerge first? Why?
Roots. It does not have any water stored in the seed and it needs water to survive.
A butterfly is both a pest and a boon(helpful) to farmers. Why is this so?
Caterpillars will feed on the leaves of their crops, causing the plants to produce lesser food and unable to grow big
Butterflies helps to pollinate the flowers of the crops so the flowers can be fertilised and develop into fruits.