Bio Exam 4 Class 3 (Deuterostomes)

Question 1

all deuterstomes are also

Answer 1

bilateral triploblasts

Question 2

deuterstomes are not as … as protostomes

Answer 2

neumerous

Question 3

what forms first for deuterostomes

Answer 3

anus first

Question 4

what are the two main groups of deuterstomes

Answer 4

echinodermata and chordata

Question 5

what do echino derms include?

Answer 5

marine invertabrates (sea urchins. sea stars, sea cucumbers)

Question 6

what are the 4 synapomorphies of echinoderms?

Answer 6

1. pentaridal symmetry
2. endoskeleton
3. water vascular system
4. tube feet

Question 7

ehinoderm larva are… symmetrical.. adults are

Answer 7

bilateral,, pentaradial

Question 8

some echinoderms have evolved an

Answer 8

exoskeleton

Question 9

what does the water vascular system do for echinodems>

Answer 9

hydrostati skeleton

Question 10

what do tube feet do>

Answer 10

help with movement and predation

Question 11

what and how do echinoderms feed.

Answer 11

algae and prey on animals
- suspension feed or eat detritus

Question 12

what are some of the ecosystem impacts of echinodermata>

Answer 12

ex. kelp forests
- sea urchins eat kelp
- otters eat urchins
- sea urchins then boomed everywhere which then deforested the kelp
- this leading of less o2 and carbon sequestration

Question 13

what are chordates?

Answer 13

include two sub groups plus verbrates

Question 14

what are the 3 froupd of chordates

Answer 14

cephalochordates
urochordates
vertebrates

Question 15

what are the 4 synapomorphies of chordates

Answer 15

• pharyngeal gill slits
• dorsal hollow nerve chord
• notochord
• post anal tail

Question 16

what are vertabrates?

Answer 16

a subgroup of chordates that share two additional synapomorphies

Question 17

what are the 2 additional synapomorphies of vertabrates?

Answer 17

vertebrae
cranium

Question 18

what is the vertabrae?

Answer 18

bony or cartilaginous structural support column

Question 19

what is the cranium?

Answer 19

bony or cart. fibrous case that encloses the brain

Question 20

where did the craium first evolve from?

Answer 20

the boney exoskeleton

Question 21

the first vertabrae are

Answer 21

cartilagenous

Question 22

what morphological innovation did the vertabrates develop to live on land

Answer 22

jawws
bony endoskel
limbs- tetrapod
amniotic eggs

Question 23

jaws gradually evolved from

Answer 23

pharyngeal gill arches

Question 24

jaws allowd…

Answer 24

ray finned fishes and tetrapods to capture food

Question 25

fish are not

Answer 25

monophyletic

Question 26

approximately half of all vertabrate species are... and the other half are...

Answer 26

ray finned fishes and tetrapods

Question 27

fossil evidence suggests that fins evolved into

Answer 27

limbs

Question 28

what do limbs allow for

Answer 28

movement on land

Question 29

what does the amniotic eggs help with

Answer 29

protects embryos from dessication

Question 30

amniotes are split into two groups

Answer 30

mammals and reptiles

Question 31

the amniotic egg is different between reptiles and mammals in that

Answer 31

the reptiles have a shell and in mammals they have a placenta

Question 32

what mammals lay eggs

Answer 32

platypi and echidnas

Question 33

what are the advantages and disadvantages to parental care

Answer 33

advantages: - better survival for offspring Disadvantages: - lactation is a lot of enerygy - moms will fight to the death for her offspring - have to find food for their young

Question 34

what is an r selected species

Answer 34

individuals with high mortality - many babies at once - low parental care ex.) mice and rabbits

Question 35

what are k selecte dspecies

Answer 35

- lower mortality rate - high parental care - only a few babies at once

Question 36

look at the surviroship curve for word map

Answer 36

hehe

Question 37

examples of r selected

Answer 37

cockroach dandelion

Question 38

examples of k selected

Answer 38

elephant and saguaro cactus

Question 39

what was the importance of feather evolution

Answer 39

-insulation - display - flight facilitation

Question 40

what are primates>

Answer 40

mammals that include moneys, apes and humans

Question 41

what are the 2 groups of primates>

Answer 41

- prosimians (arboreal, small, nocturnal) - anthropoids (human like)

Question 42

what are hominidae?

Answer 42

himinids are a subgroup of mammals including gorillas chips humans etc.

Question 43

what are 3 sunapomorphies of hominids>

Answer 43

1 large brians 2 hand and feet 3 parental care

Question 44

what is bipedalism?

Answer 44

found only in hominids