Ch 33: Invertebrates - Anthropoda

Question 1

this phyla is the most abundant with over 1 million species

Answer 1

t

Question 2

what is a defining characteristic of this phyla

Answer 2

Jointed appendages

Question 3

they contain an exoskeleton. what is it made of and what purposed does it serve?

Answer 3

Its made of chitin+proteins and it protects animals from predators and water loss

Question 4

what is tagmata?

Answer 4

a distinct region of the body of an arthropod, such as the head, thorax, or abdomen of an insect.

Question 5

what is a compound eye?

Answer 5

visual organ found in arthropods. they are made up of repeating units, the ommatidia, each of which functions as a separate visual receptor. includes lens reticular lens and nerve fiber

Question 6

what type of circulatory system do they have?

Answer 6

open

Question 7

what does their nervous system consist of?

Answer 7

Double chain of segmented ganglia running along the ventricle surface

Question 8

what does their respiratory system consist of?

Answer 8

trachea tracheoles and spiracles

Question 9

what are the spiracles ?

Answer 9

an opening where air passes to the trachea

Question 10

what 4 classes of anthropoda did we talk about in class?

Answer 10

Chelicerates, Myriapods, Hexapoda, Crustaceans

Question 11

Chelicerates: what 4 species are in this class

Answer 11

ticks, mites, spiders, scorpions

Question 12

Chelicerates: what are Chelicerates

Answer 12

a pair of appendages in front of the mouth (pincers or fangs)

Question 13

Chelicerates: how many segments do they have?

Answer 13

2 the Prosoma and the Opisthsoma

Question 14

Chelicerates: what does the Prosoma include?

Answer 14

4 pairs of walking legs

Question 15

Chelicerates: what does the Opisthsoma include

Answer 15

reproductive organ

Question 16

Chelicerates: what are pedipalps?

Answer 16

second pair of appendages attached to the cephalothorax of most arachnids. They are variously specialized as pincers in scorpions, sensory organs in spiders, and locomotory organs in horseshoe crabs.

Question 17

Myriapods: species

Answer 17

centipedes and millipedes

Question 18

Myriapods: Consists of a head with

Answer 18

numerous body segments

Question 19

Myriapods: how many Pairs of legs do Centipedes have? Millipedes?

Answer 19

Centipedes – 1 per segment

Millipedes – 2 per segment

Question 20

Myriapods: Mandibles are

Answer 20

modified appendages that are jaw like

Question 21

Hexapoda: Species

Answer 21

Insects

Question 22

Hexapoda: are primarily terrestrial

Answer 22

t

Question 23

Hexapoda: how many tagmata?

Answer 23

3. a head, a thorax and an abdomen

Question 24

Hexapoda: have what kind of appendages?

Answer 24

Uniramous, mwaning there is only one single per outlet, (not split)

Question 25

Hexapoda: contain what two sensory receptors?

Answer 25

Sensory setae and Tympanum

Question 26

Hexapoda: Sensory setae detect …

Answer 26

chemical and mechanical stimulation

Question 27

Hexapoda: Tympanum detect …

Answer 27

sound

Question 28

Hexapoda: go through Complete metamorphosism and Incomplete metamorphosis

Answer 28

t

Question 29

Hexapoda: Complete metamorphosis –

Answer 29

complete change from one stage to the next

Question 30

Hexapoda: Incomplete metamorphosis

Answer 30

younger are like adults but they are smaller and lack wings (different body proportions)

Question 31

Crustaceans: Species

Answer 31

crab, shrimp, crayfish, barnacles, water fleas

Question 32

Crustaceans: are primarily aquatic

Answer 32

t

Question 33

Crustaceans: how many tagmata? What is the exception?

Answer 33

3. sometimes the head and thorax fuse to make a cephalothorax

Question 34

Crustaceans: how many pairs of antennae do they have?

Answer 34

2

Question 35

Crustaceans: are Biramous meaning…

Answer 35

they have two branches of appendages

Question 36

Crustaceans: use Feathery gills for…

Answer 36

respiration