Lecture 1 Flashcards
What are some good things that insects do?
- Pollinators
- Honey and beeswax
- Silk
- Shellac
- Dyes
- Medicine and Surgery
- Food
Why are insects so good at surviving?
- They’re small
- Variation of Legs
- They Fly
- Rapid life cycle
- High birth rate
- Metamorphosis
Insects
What Kingdom: ?
What Phylum: ?
What Class: ?
Kingdom: Animalia
Phylum: Arthropoda
Class: Hexapoda
The external insect body includes:
- Head
- Thorax
- Abdomen
What are two subclasses of Hexapoda?
Apetrygota - Wingless
Pterygota - Winged
define Tagma:
The grouped segments of a body region
The exoskeleton may harden into plates called _______.
Sclerites
What are the 3 types of insect eyes?
- Eye spots - primitive (immature flies)
- Ocelli - can see light and dark only
- Compound eyes - can see forms, but not like humans
The Insect Thorax is a fusion of 3 segments….What are they called?
- Prothorax - front
- Mesothorax - middle
- Metathorax - back
Each segment of the Insect Thorax contains how many Pairs of legs?
1 pair of legs for each segment
What is the primary function of the Thorax?
It houses the muscles that move the wings and legs
True or False
Only adult insects have wings.
True
(Some adults dont, but only adults can have them)
EXCEPTION TO THE RULE:
Mayflies
The insect abdomen may have up to ____ segments.
11
On the abdomen…what are the Spiracles?
Air holes
What is the Ovipositor?
Egg laying device
What are the 3 regions of the disestive system?
- Foregut
- Midgut
- Hindgut
Insect circulatory system is an Open System….what does that mean?
It’s Open….the hymolymph (insect blood) is free inside the body cavity. when the insect moves, the muscles contracting make the hemolymph move around inside.
What are the primary functions of the insect Circulatory System?
- Pressure regulation
- Heat transfer
- Food and waste transport
- Storage
What is the name for “insect blood” ?
hemolymph
Describe the insect respiratory system.
- One big lung
- a series of tubes
- Spiracles that open to the outside (one at each segment)
- Oxygen diffuses in
- Carbon dioxide diffuses out
- When the movement pumps the hemolymph around, it “breaths”
describe the methods of reprodution.
- Parthenogenesis: Females will lay eggs without being fertilized.
- Copulation: Takes male and female to reproduce
What is the sack that holds all of the sperm?
Spermathecea
Define Molting:
The process of digesting the old exoskeleton and synthesizing a new one
