Class Arachnids
Answers are for parents and teachers.
1
Compare a spider and an insect by 4 features.
Spider: cephalothorax+abdomen, 4 pairs of legs, no antennae, wingless. Insect: head+thorax+abdomen, 3 pairs of legs, antennae, often winged.
2
What should be done after a scorpion sting or black widow bite? Write 3 steps.
Stay calm, tell an adult at once, call emergency help or go to a doctor; do not self-treat.
3
Write 3 rules for avoiding ticks.
Keep livestock areas clean; check clothes and body after the pasture; see a doctor if a tick attaches.
4
Why are spiders considered useful?
They destroy flies, mosquitoes and other harmful insects and reduce their numbers.
5
In 3 sentences, write what happens over winter and spring to a cross-spider cocoon found in a garden in autumn.
In autumn the fertilised female weaves a cocoon in a hidden spot and lays eggs; the spiders die in winter; young hatch in spring.