Let's solve this worksheet step by step. The task is to
choose the best word from the box to complete each sentence. Here is the list of words provided in the box:
Word Bank:
- invertebrate
- head
- thorax
- abdomen
- egg
- two
- three
- six
- eight
- wings
- antennae
- exoskeleton
- metamorphosis
Now, let’s go through each sentence and fill it in with the correct term.
---
1.
An insect has ________ main body sections.
→ Insects have
three main body parts: head, thorax, and abdomen.
✔ Answer: three
2.
The front part of an insect's body is called the ________.
→ The front part is the
head.
✔ Answer: head
3.
The back part of an insect's body is called the ________.
→ The back part is the
abdomen.
✔ Answer: abdomen
4.
Insects have ________ paired legs.
→ Insects have
three pairs of legs (6 total).
✔ Answer: three
5.
An insect's legs are attached to its ________.
→ Legs are attached to the
thorax.
✔ Answer: thorax
6.
Insects do not have a backbone. They are ________.
→ Animals without a backbone are
invertebrates.
✔ Answer: invertebrate
7.
An insect's body has a hard outer covering called an ________.
→ This hard covering is called an
exoskeleton.
✔ Answer: exoskeleton
8.
The first stage of an insect's life cycle is an ________.
→ The life cycle starts with an
egg.
✔ Answer: egg
9.
Some insects have ________ attached to their thorax so they can fly.
→ Wings are attached to the thorax for flight.
✔ Answer: wings
10.
Insects have two ________ on their head for feeling and smelling things.
→ These are
antennae.
✔ Answer: antennae
11.
A spider is not an insect because it has ________ body sections and ________ legs.
→ Spiders have
two body sections (cephalothorax and abdomen) and
eight legs.
✔ Answer: two, eight
12.
The changes of an insect as it develops from an egg to adult is called ________.
→ This process is
metamorphosis.
✔ Answer: metamorphosis
---
Final Answers:
1. three
2. head
3. abdomen
4. three
5. thorax
6. invertebrate
7. exoskeleton
8. egg
9. wings
10. antennae
11. two, eight
12. metamorphosis
✔ All answers are based on standard biology facts about insects. Let me know if you'd like a printed version or explanation of any concept!
Parent Tip: Review the logic above to help your child master the concept of 3rd grade insect worksheet.
