1. 5/11/15 Mr. Faia 6th Grade Science
Insects
5/11/15
Mr. Faia
6th Grade Science

2. Insects There are 760,000 species of insects
Ants, bees, wasps – 100,000
Beetles, weevils – 300,000
Butterflies, moths – 110,000
Flies, mosquitoes – 100,000
Other insects – 150,000

3. The Insect Body Insect bodies are different than other arthropods:
3 Body sections
6 Legs
1 Pair of antennae
1 or 2 pairs of wings (usually)

4. The Insect Body
3 Body Sections:
Head
Thorax
Abdomen

5. The Insect Body Sense organs are on the head
Legs and wings are attached to the thorax
Internal organs are in the abdomen

6. The Insect Body Insects usually have 2 large compound eyes
Compound eyes are very useful in detecting movement
Why might this
be important?

7. The Insect Body Insects have a system of tubes to breathe
These tubes take oxygen directly to cells

8. From Egg to Adult Insects hatch from small, hard-shelled eggs
They then go through a major body change
What is a name
for this process?

9. From Egg to Adult There are 2 types of metamorphosis
Complete Metamorphosis
Gradual Metamorphosis

10. From Egg to Adult Complete metamorphosis has 4 different stages: Egg
Larva
Pupa
Adult

11. From Egg to Adult
Gradual Metamorphosis has 3 stages:
Egg
Nymph
Adult

12. How Insects Feed
If it is alive, was alive, or made from something that was alive, insects will eat it

13. How Insects Feed Insects will eat plants and plant parts
Also things made from plants
Can you think of an example?

14. How Insects Feed
Insects will also feed on animals; living, dead, and otherwise
Fleas
Mosquitoes

15. How Insects Feed Insects’ mouthparts are where insects differ
They are adapted to get food
What is an adaptation?

16. REVIEW What are the names of the 3 sections of an insect’s body?
How do all insect’s begin their lives?
How many species of insects are there?
What do insects feed on?
What are the 2 different types of metamorphosis?
What are the stages for each type of metamorphosis?
What is found on each of an insect’s body sections?

17. Defending Themselves
Hard exoskeleton
Quick speed or flight
Stingers

18. Defending Themselves One of the most common defenses is camouflage
Protective coloration
Insects can blend in with surroundings or look like other animals

19. Insects and Humans
For every human, there are AT LEAST 200 million insects
Some species will damage crops
Other species can cause disease

20. Insects and Humans Most insects are helpful Bees make honey
Silkworm moth spins fibers for silk
Insects prey on harmful insects