Insect anatomy in depth

Question 1

Which statement correctly describes two specialised insect structures and what they do?

Accepted Answer

Compound eyes are made of thousands of tiny lenses that give insects a wide field of vision, and spiracles are small openings on the sides of the body that let air enter the breathing system.

Answer

Compound eyes are long, tube‑like eyes that help insects see only straight ahead, and spiracles are tiny hairs that help insects sense temperature.

Answer

Spiracles are hard plates that protect the insect’s brain, and mandibles are the tiny lenses that let insects see in many directions.

Answer

Both compound eyes and spiracles are used for catching food; the eyes grab prey and the spiracles pull food into the mouth.

Question 2

Lena is learning how insects see and breathe. Which description correctly explains what two insect parts do?

Accepted Answer

Compound eyes are made of many tiny lenses that let insects see in many directions at once, and spiracles are small openings along the sides of the body that let air enter for breathing.

Answer

Compound eyes are single large lenses that help insects hear, and spiracles are tiny legs that help insects cling to leaves.

Answer

Compound eyes are clusters of hairs that detect scent, and spiracles are hard plates that protect the insect’s wings.

Answer

Compound eyes are rows of sharp teeth for chewing, and spiracles are tubes that pull water into the abdomen.

Question 3

Mia watches a garden beetle munching on a green leaf and a butterfly sipping sweet nectar from a flower. Which statement best explains how each insect’s mouthparts are specially suited to the food they are eating?

Accepted Answer

The beetle’s mandibles are strong, jointed jaws that cut and grind solid leaves, while the butterfly’s long, coiled proboscis works like a straw to draw up liquid nectar.

Answer

The beetle’s mandibles are thin, tube‑like structures that sip nectar, and the butterfly’s proboscis is a pair of chewing parts used to bite leaves.

Answer

Both the beetle and the butterfly have the same type of mouthpart—a chewing mandible—so they can both eat leaves and nectar equally well.

Answer

The beetle’s mandibles are used to filter air through spiracles, and the butterfly’s proboscis is used to spray water onto plants.

Try three questions

Which statement correctly describes two specialised insect structures and what they do?

Lena is learning how insects see and breathe. Which description correctly explains what two insect parts do?

Mia watches a garden beetle munching on a green leaf and a butterfly sipping sweet nectar from a flower. Which statement best explains how each insect’s mouthparts are specially suited to the food they are eating?

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