Science Process Skills (Cycles) - Answer Key

Worksheet 2
1) frog / toad
2) butterfly / moth
3) hen / rooster / chicken
4) cat
5) mosquito
6) The chick and the kitten.

Worksheet 3
1a) mosquito
b) toad
c) frog
d) lizard
e) cockroach
f) butterfly
2) The toad, frog and the mosquito.
3) This will ensure that some offspring survive to develop into adults and reproduce.

Worksheet 4
1) 1
2) 2
3) 2
4) 4
5) 3
6) 2

Worksheet 5
1) dragonfly /cockroach / grasshopper
2) butterfly / moth / beetle
3) There is no pupa stage in cycle A.
4a) Both were hatched from eggs.
(OR) They are both at the 2nd stage of their life cycle.
4b) A caterpillar develops into a pupa but a nymph develops into an adult.
5) Insect A.

Worksheet 6
1) There are 3 stages in each life cycle.
2) Grasshopper, toad, locust, etc.
3) Frog eggs are black and are covered with soft transparent jelly, while cockroach eggs are white and enclosed in a brown egg case.
4) Appearance - A tadpole looks different from its parents while a nymph looks like its parents.
Habitat - A tadpole lives solely in water, but a nymph lives only on land.
Food - A tadpole feeds on tiny plants while a nymph feeds on anything edible.

Worksheet 7
1) E --> A --> D --> C --> B
2) The root.
3) It grows downwards.
(OR) It grows towards the source of water.
4) It grows upwards.
(OR) It grows towards the sunlight / light.
5) From the seed. (OR) From the seedleaves.
6) At stage B.

Worksheet 8
1) seed
2) Seed coat / Testa; Root
3) Shoot
4) leaves; seedling.
5) sunlight; water; air
6) flowers
7) fruit

Worksheet 9
1) eggs; seeds
2) seedling; duckling
3) seedleaves; yolk
4) seedling; duckling
5) adult