Life Cycle of Insects (beginner) | Tee | Live - Free Printable

Let's solve each part of this worksheet step by step and explain the reasoning.

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1) A ____________ is the order of the stages in an animal's growth.

Options:
a) life span
b) life cycle
c) life saver

✔ Correct answer: b) life cycle

Explanation:
The *life cycle* refers to the series of stages an organism goes through from birth to reproduction and death. "Life span" refers to how long an organism lives, and "life saver" is unrelated here.

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2) The term "_____________" refers to the way that certain organisms develop, grow and change form.

Options:
a) vector
b) insect
c) metamorphosis

✔ Correct answer: c) metamorphosis

Explanation:
*Metamorphosis* is the biological process by which an animal physically develops after birth or hatching, involving a conspicuous and relatively abrupt change in form. Vectors are organisms (like mosquitoes) that transmit diseases, and "insect" is a general classification.

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3) Write the correct word from the box to name the stages in each animal life cycle.

#### For The Mosquito:

Stages available: larva, adult, egg, pupa

Look at the diagram:
- The first stage shown is an egg.
- Then it becomes a larva (often called a "wriggler").
- Then it becomes a pupa (also called a "tumbler").
- Finally, it emerges as an adult mosquito.

So, labeling clockwise or following the arrows:

- Top: Adult
- Right: Pupa
- Bottom: Larva
- Left: Egg

✔ Mosquito stages (in order): Egg → Larva → Pupa → Adult

#### For The Cockroach:

Stages available: adult, nymph, egg

Cockroaches go through incomplete metamorphosis, so they have:
- Egg → Nymph (young version, looks like smaller adult) → Adult

In the diagram:
- Top: Adult
- Right: Nymph
- Bottom: Egg
- Left: Egg (or possibly just one egg case)

But looking at the image, the small oval shape on the left is the egg, then it hatches into a nymph, which grows into an adult.

So:
- Left: Egg
- Bottom: Nymph
- Top: Adult

✔ Cockroach stages (in order): Egg → Nymph → Adult

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4) Type in "incomplete" or "complete" on the lines above to name each type of metamorphosis shown.

- Mosquito: Has four distinct stages — egg, larva, pupa, adult. This is complete metamorphosis (also called holometabolism).

- Cockroach: Has three stages — egg, nymph, adult. No pupal stage. This is incomplete metamorphosis (also called hemimetabolism).

✔ So:
- Mosquito: complete metamorphosis
- Cockroach: incomplete metamorphosis

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✔ Final Answers:

1) b) life cycle
2) c) metamorphosis

3)
- Mosquito:
- Top: Adult
- Right: Pupa
- Bottom: Larva
- Left: Egg

- Cockroach:
- Left: Egg
- Bottom: Nymph
- Top: Adult

4)
- Mosquito: complete metamorphosis
- Cockroach: incomplete metamorphosis

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This worksheet teaches the difference between complete and incomplete metamorphosis using real-life examples. Mosquitoes undergo complete metamorphosis with dramatic changes, while cockroaches undergo incomplete metamorphosis with gradual changes.