intro to animals

Question 1

invertebrates

Answer 1

95% of all animals. lack a a vertebrae column

Question 2

what percentage of animals are a chordate

Answer 2

5%. from the phylum chordata.

Question 3

do all chordata phylum members have a tail at some point in their life?

Answer 3

yes. we do as embryos

Question 4

what are pharyngeal pouches?

Answer 4

structures in the throat that form into gills

Question 5

Is “dorsal” in the front or back of the body?

Answer 5

back. our backbone is on the dorsal part of our bodies

Question 6

how do animals maintain homeostasis?

Answer 6

1. gathering and responding to information, 2. obtaining and distributing oxygen, 3. collecting and eliminating co2 and wastes, 4. reproduce

Question 7

all chordates have what 4 har. at some point in their lives?

Answer 7

1. dorsal hollow nerve chord, 2. a back bone, 3. pharyngeal pouches, 4. a tail

Question 8

feed back inhibition helps homeostasis how?

Answer 8

it keeps an environmental stimuli from imbalancing homeostasis. cold air, body shivers to move muscle to heat you up.

Question 9

receptors are ?

Answer 9

nerve cells that respond to stimuli and analyze the data for our best interest.

Question 10

what element do we need for cellular respiration?

Answer 10

o

Question 11

How do animals get oxygen?

Answer 11

gills, absorb through skin, breathe, digesting food

Question 12

how do animals take care of waste?

Answer 12

respiratory, excretory

Question 13

what is a body plan?

Answer 13

unique organization of a body structure for each animal clade

Question 14

what are the features found in different body plans?

Answer 14

1. body symmetry, 2. embryonic development, 3. segmented body types. 4. limb formation, 5. cephalization

Question 15

radial symmetry?

Answer 15

extended outward from the center

Question 16

bilateral symmetry?

Answer 16

left and right sides. they ALWAYS have a front (anterior) back (posterior) upper side (dorsal), and lower side (ventral)

Question 17

what side is your tummy on?

Answer 17

ventral

Question 18

what side is your back

Answer 18

dorsal

Question 19

what side is your face?

Answer 19

anterior

Question 20

what side is your anus?

Answer 20

posterior

Question 21

what is cephalization?

Answer 21

its where most of the sense organs are (nose, eyes) Almost ALWAYS on anterior side

Question 22

how does embryonic formation differ from animals in different clades?

Answer 22

1,. zygote (fertilized egg) 2. coelom ( most complex animals have this body cavity that has a stomach and digestive organs) vs. those that are a primitive jelly like layer (jelly fish)

Question 23

what are the different segmented types in different clades?

Answer 23

1. Function- different segments have different functions ( 2 legs vs. 4 legs vs. no legs with a tail) 2. Repeated parts bilaterally- 2 eyes,, 2 ears, 2 arms, 2 lungs) on each side