Insects: the rose chafer and Lab 3
Answers are for parents and teachers.
1
Compare an insect and a crayfish: body parts, antennae, legs, breathing.
Insect: 3 parts, 1 pair of antennae, 3 pairs of legs, tracheae. Crayfish: 2 parts, 2 pairs of antennae, 5 pairs of legs (including the claws), gills.
2
Write two kinds of insect mouthparts with examples.
Chewing – beetle, grasshopper; sucking/piercing-sucking – butterfly, mosquito.
3
Write the path of breathing through tracheae in order.
Air → abdominal openings → tracheae → branching tubes → organs and cells.
4
Give 3 examples of leg adaptation.
Grasshopper – jumping; water beetle – paddling; mole cricket – digging.
5
Why are dried insects used in the lab?
To avoid harming nature, for safety and to study structure clearly.