Abeka Biology Chapter 20 Flashcards Preview

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Flashcards in Abeka Biology Chapter 20 Deck (24):
1

What is the largest and most divers group of animals?

invertebrates (animals without backbones)

2

What invertebrates with joined appendages, make up more than three fourths of all species in the animal kingdom and include such familiar creatures as insect, spiders, crayfish, centipedes, and millipedes?

arthropods

3

What is the exoskeleton of an arthropod composed of?

chitin

4

What scientists have identified bout 1 million species of insects and estimate that many more exist?

Entomologists

5

What is the wonderful process in which an insect matures?

metamorphosis (complete of incomplete)

6

In what metamorphosis do insects begin life as an egg that hatches into a nymph, which is an immature form of the insect that looks much like the adult but as different body proportions and lacks wings?

incomplete metamorphosis

7

In what metamorphosis does the egg develop into a larva, a wormlike eating and growing stage?

complete metamorphosis

8

What are the three distinct body regions of insects?

head, thorax, and abdomen

9

What eye is composed of many independent lenses and retinas?

compound eye

10

What is the middle section of the insect's body?

thorax

11

What section of of the insect's body contains many of the insect's vital organs?

abdomen

12

What is an insect with a half-wing design and piercing-sucking mouthparts which it uses to suck sap from plants and body fluids from animals?

Bugs

13

What are a few examples of social insects?

Ants, bees, and wasps.

14

What animals constitute the class Arachnida?

Spiders, daddy longlegs,mites and ticks, and scorpions.

15

How many distinct body regions do arachnids have?

Two regions

16

What pair of short appendages does the spider use to seize and kill its prey?

chelicerae

17

What appendage that looks like a small leg, is attached to each side of a spider's mouth?

pedipalp

18

What two components make up the spiders respiratory system?

Tracheae and book lungs.

19

What organs does the spider use to spin silk?

spinnerets

20

What is an especially hard outer shell in a crustacean that provides the vital organs with an additional defense against hungry predators?

Carapace

21

What is a forward extension of the carapace that protects the will-defined head?

rostrum

22

What crayfish's abdominal appendages are found on the body segments that make up the abdomen?

Swimmerets

23

What do the six swimmerets make up?

uropod

24

What special excretory organs lie in from of the stomach and open to the outside near the base of of the antennae?

green glands