General Entomology quiz 1

What is entomology?

en+temnein = “cut in pieces” (having a notch or cut at waist) is the study of insects

What is an entomologist?

People who study insects by observing, collecting, rearing and conducting experiments. Evolution, ecology, behavior, anatomy, physiology, biochemistry and genetics (of insects and their relatives)

Many biologists work with insects for many reasons:

• Ease of rearing in a laboratory

• Rapid growth and availability of many individuals

• Minimal ethical concerns

• Ecological diversity

Insect Diversity

Insects constitute about 75% of all animal species

How many insect species are there?

about 1 Million

How many orders of insects will we study?

28

Which order of insect is the most diverse?

Coleoptera

insects are…

diverse, outnumbered, and everywhere!

Some reason for success of insects:

1. Small size

2. Short generation time

3. Reproductive potential

4. Exoskeleton

5. Metamorphosis

6. Flight

7. Sensory capabilities

8. Interactions with plants and other organisms

Importance of Insects:

1. Insects in human activities

2. Insects in ecosystem

3. Natural compounds derived from insects

4. Model organisms for scientific research

Insect body parts:

head, thorax, and abdomen

Insects originally have __ segments.

20 segments,

Head (6 segments)

Thorax (3 segments)

Abdomen (11 segments)

The anterior part of the head is the

frons

he anterior dorsal part of the head, between the eyes is the

vertex

The area below the compound eye, on the side of the head, is the

gena

The liplike sclerite is the

clypeus

Insect eyes

• Compound eyes

• Ocelli (simple eyes of adult & nymph)

• Stemmata (simple eyes of larva)