Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

biology > chapter 15.2-5 > Flashcards

chapter 15.2-5 Flashcards

1
Q

how many phyla is the animal kingdom divided into?

A

35

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

how many sponge species are there?

A

5,000, most of them are marine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

since when have sponges existed?

A

they have existed since precambrian

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

how do sponges asexually reproduce?

A

through budding and gemmules

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

how do sponges sexually reproduce?

A

they sexually reproduce with larval stage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what forms the outer covering of a sponge?

A

pinacocyte forms the outer layer, it may phagocytize large food particles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what does lophocyte do?

A

it secretes youth! (collagen lol)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what does the porocyte do?

A

it controls water flow through the ostia (in sponges)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what does the amoebocyte do?

A

it delivers nutrients to cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what does the chaonocyte do?

A

it generates water current and filters food particles from water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what does the sclerocyte do?

A

it secretes silica spicules

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

how do sponges generate water current through their bodies?

A

by the movement of the flagella of chaonocytes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what is venus’ flower basket?

A

a sponge with spicules that are fused into a rigid network

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

radial symmetry was first present in what?

A

radial symmetry was first observed in cnidaria

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what are the two body forms of cnidaria?

A

polyp and medusa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what are examples of polyp?

A

anemones, corals, and hydra

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

what are examples of medusa?

A

jellyfish

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

where is the cnidaria’s tentacles located?

A

around its mouth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

why does cnidaria have gastrovascular activity?

A

to help with digestion of food

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

does cnidaria have an anus?

A

no!

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

tell us about the layers of the cnidaria…

A

there are two layers, the epidermis and gastrodermis. Between them, there is a jelly-like mid-layer called mesoglea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

how many species of cnidaria are there?

A

there are 10,000

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

what are some examples of cnidaria?

A

jellyfish, sea anemone, and coral jellies

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

animals from the phylum cnidaria have stinging cells called?

A

cnidocydes!

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
cnidocytes contain large organelles called nematocysts, what do they store?
nematocysts store a coiled thread, barb, and toxin which are released when the cell surface is touched
26
what was the next evolutionary step after radial symmetry?
bilateral symmetry!
27
how many species of platyhelminthes are there?
20,000
28
how many tissue layers are there in the embryo of platyhelminthes?
there are three layers in the embryo
29
do platyhelminthes have coeloms?
no they do not
30
do platyhelminthes reproduce sexually or asexually?
both
31
what are the three major groups of platyhelminthes?
free-living flatworms, flukes, and tapeworms
32
what is the planarian?
a flatworm
33
tell us more about the planarian flatworm please...
it has a gastrovacular cavity with one opening that serves as mouth and anus
34
tell us about the excretory system of the planarian flatworm please...
it is made of tubules connected to excretory pores on both sides of the body
35
tell us about the nervous system of the planarian flatworm please...
it is composed of two interconnected nerve cords running the length of the body, with cerebral ganglia and eyespots at the anterior end
36
where do rotifers get their name?
from corona: rotating wheel-like structure with cilia
37
do rotifers have any form of body cavity?
yes, a pseudocoelom
38
does parthogeny occur often in rotifers?
yes
39
what are ribbon worms?
Nemertea
40
Are nemertea mostly sea creatures or land?
mostly marine bottom dwellers
41
how many species of nemertea are there?
900 species
42
what kind of feeders are nemertea?
mostly carnivores, some scavengers, parasites, and commensalists
43
how long are nemertea?
up to several meters long
44
are nemertea segmented or unsegmented?
they are soft and unsegmented
45
what is the purpose of the proboscus in nemertea?
to capture food
46
do nemertea have a coelom?
yes
47
what organs do nemertea have?
primitive kidneys, intestines, brains, and reproductive organs
48
how many species of mollusca are there?
85,000
49
tell us about the body of the mollusca...
soft bilateral body and often hard shell
50
do mollusks have a muscular foot?
yes
51
what does the mantle in mollusca?
respiration, waste disposal, sensory reception, and produces shell
52
do mollusca have a radula?
yes
53
where is the coelom located in mollusca?
it is wrapped around the heart
54
what organs do mollusca have?
coelom, heart, kidneys, reproductive organs
55
do mollusca have a nervous system?
yes
56
tell us about the circulatory system of mollusca..
it is an open circulatory system with a hemocoel
57
how many species of mollusks are there?
seven
58
what happens to gastropods during embryonic development?
their anatomical features undergo torsion
59
what is torsion?
the rotation of anatomical features
60
what happens as a result of torsion in gastropods?
the anus of the adult animal is located above its head
61
where was the colossal squid found?
near antarctica
62
how long are the colossal squid's tentacles typically?
13 m long
63
are annelida segmented or unsegmented?
segmented
64
do annelida have a coelom?
yes, and a true coelom at that
65
do annelida have nervous systems?
yes
66
do annelida have circulatory systems?
yes
67
do annelida have kidneys?
yes
68
how many species of annelida are there?
16,500
69
what are the three groups of annelida?
Earthworms, polychaetes, and leeches
70
what is segmentation?
subdivision of body along its length into a series of repeated parts
71
what are the pros of segmentation?
gives body flexibility and mobility
72
segments can have appendages:
adaptations for specialized tasks, such as bristles
73
how many known species of nematodes are there?
28,000
74
what shape do nematodes take on?
cylindrical
75
nematodes' bodies are covered with what?
cuticle; molting
76
do nematodes have circulatory systems?
no
77
do nematodes have respiratory systems?
no
78
do nematodes have complete digestive tracts with mouth and anus?
well yes, you should have induced that from the sentence
79
what kind of feeders are nematodes?
mostly decomposers, some are parasites on plants, animals, and humans
80
how many species of arthropods are there?
over a million
81
tell us about the exoskeleton of arthropods...
it has cuticle of chitin and waxes: protection
82
what happens to arthropods between growth spurts?
molting
83
are arthropods segmented or unsegmented?
segmented
84
what are trilobites?
an extinct group of arthropods
85
what is the biggest group of animals?
insects
86
echinodermata are related to what?
chordata
87
are echinodermata marine or on land?
marine
88
are echinodermata segmented or unsegmented?
unsegmented
89
what kind of symmetry do echinodermata have in the larval stage?
bilateral symmetry
90
what kind of symmetry do echinodermata have in the adult stage?
radial symmetry
91
what kind of skeleton do echinodermata have?
endoskeleton with plates and spines
92
what kind of vascular system do echinodermata have?
a water vascular system with tube feet
93
echinodermata have strong powers of...?
regeneration

biology (14 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions