Zoology Test 3

Question 1

Characteristics of typical annelids are

Answer 1

segmentation, a closed circulatory system, and metanephridia

Question 2

setae are:

Answer 2

hair like bristles and a synapomorphy of annelids

Question 3

in contrast to Nematodes, how do Oligochaetes elongate? (stretch lengthwise)

Answer 3

they contract their circular muscles

Question 4

annelids that are direct deposit feeders live:

Answer 4

in the substrate (sand or soil)

Question 5

hirudineans are unlike other annelids in that:

Answer 5

they have no setae

Question 6

the polychaetes:

Answer 6

belong to the largest and most diverse class of annelids

Question 7

Polychaetes crawl by a means of _____ which may also serve in respiration:

Answer 7

parapodia

Question 8

characteristics typical of arthropods are:

Answer 8

segmentation, open circulation, and Malpighian tubules

Question 9

The chelicerae that give the Chelicerata its name are:

Answer 9

derived from the first pair of appendages

Question 10

spiders breathe by means of:

Answer 10

book lungs

Question 11

merostomates breathe by means of:

Answer 11

book gills

Question 12

relative to merostomates, the arachnids and crustaceans show:

Answer 12

highly specialized appendages

Question 13

primitive crustaceans, such as Cephalocarida have:

Answer 13

many similar appendages

Question 14

subclass cirripedia (barnacles) are different from all other crustaceans you have studied because:

Answer 14

they secrete a calcareous shell, are sessile, originally classified as molluscs, and are suspension feeders

Question 15

the exoskeleton of most terrestrial arthropods:

Answer 15

prevents water loss

Question 16

why is the respiratory apparatus of a crayfish covered by the carapace?

Answer 16

to protect them from clogging and damage

Question 17

the crustacean order that has been most successful invading terrestrial environments is the :

Answer 17

isopoda

Question 18

all marine crustaceans share:

Answer 18

the nauplius larva during development

Question 19

members of chilopoda:

Answer 19

are active predators

Question 20

insect wings operate by:

Answer 20

either attaching to the wing directly or moving the wing by distorting the thoracic components

Question 21

disadvantage of insect development where juvenile forms are similar in appearance, but smaller than adults?

Answer 21

they must compete for the same food resources

Question 22

Thysanurans (silverfish) and collemolans (springtails) both lack wings:

Answer 22

because they never evolved wings and are both primitive hexapods

Question 23

In 1753 Linnaeus described a type of speciment of the Asian Elephant. Recently however, zoologists were able to determine that the specimen Linnaeus described was actually that of the African Elephant and corrected a 300 year old mistake. How did they confirm this?

Answer 23

They extracted protein from Linnaeus’ specimen and subjected them to phylogenetic analysis