Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Bio 113 > The Coelem > Flashcards

The Coelem Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

What is a coelem

A

A fluid filled cavity btw the 2 layers of the mesoderm in some triploblastic metazoans

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

Absence of body cavity is know as

A

Acoelomate

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

Vertebrates constitute ______% of the animal kingdom

A

3%

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

A body cavity that is not a product of gastriculation is

A

Psuedocoel

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

In cnidarians ______ is found btw the endoderm and ectoderm

A

Mesoglea

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

Mesenchyme/parenchyma is found btw the ectoderm and endoderm in

A

Platyhelminthes

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

The first cavity to appear during embryonic development is

A

Blastocoel

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

Blastocoel is also called

A

Primary body cavity

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

The solid parenchyma forms in the blastocoel of

A

Acoelomates

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

The cavity left by failure of parenchyma to completely fill the space btw the mesoderm of the body wall and gut wall is called

A

Psuedocoel

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

Psuedocoel is a derivative of

A

Blastocoel

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

No muscle layer is present gut wall of

A

Psuedocoelomates

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

Psuedocoel is found in which major phylum

A

Nematoda

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

The fluid in coelemic cavity is in direct contact with the body or gut wall

A

False

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

The coelom is completely surrounded by

A

Mesodermal tissue

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

Peritoneal epithelium (peritonium) separates

A

The coelomic fluid from the gut and body wall

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

The outer part of the mesoderm becomes intimately associated with

A

The body walls

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

The inner mesoderm becomes associated with

A

The gut wall

19
Q

The body wall is lined with parietal/somatic mesoderm to become

A

The parietal peritonium

20
Q

The coelom is lined with visceral/splanchic mesoderm which forms

A

The visceral peritonium

21
Q

What are mesenteries

A

Cellular lining provided by the mesoderm which binds internal organs within the coelom

22
Q

What is a schizocoel

A

Type of coelom formed by splitting of the mesoderm

23
Q

In adult molluscs and arthropods, coelom is reduced and replaced by

A

Haemocoel

24
Q

The haemocoel is filled with

A

Blood

25
Q

Coelom formed by out pocketing or out pouching of the mesoderm is called

A

Enterocoel

26
Q

Enterocoels occur in

A

Echinoderms, hemichordates and chordates

27
Q

An important structural adaptation in coelomates is

A

Metamerism

28
Q

What is metamerism

A

Division of body into series of similar segments developed to thesame degree and arranged in linear series from anterior to posterior end of the animal

29
Q

Basically metamaric invertebrates are

A

Annelids and arthropods

30
Q

Which Phylum demonstrates the least modified form of metamerism

A

Annelids

31
Q

What is cephalization

A

Refers to the development of all features associated with the head

32
Q

Based on comparative embryology, coelomates are divided into

A

Protostomes and dueterostomes

33
Q

Protostome characterises

A

Molluscs
Annelids
Arthropods

34
Q

When Upper tier of cells is twisted 45⁰ out of line with the lower tier is known as

A

Spiral cleavage of egg after fertilization

35
Q

Blastophore develops into mouth in

A

Protostomes

36
Q

The cells of __________ embryo develop independently of one another and are unable to substitute for each other when one is removed is known as

A

Determinate (mosaic) embryo of protostomes

37
Q

_______ is embryonic development that characterises echinoderms and chordates

A

Dueterostomes

38
Q

When Upper tier of cells sits directly on top of the lower tier is known as _______ cleavage

A

Radial cleavage

39
Q

Blastophore of dueterostomes develop into

A

Anus

40
Q

When removing a cell from an embryo does not affect its development is called

A

Indeterminate (regulative) embryo

41
Q

Ectoderm gives rise to

A

Epidermis ie outer layer of the body walls

42
Q

Gastrodermis which lines the gut cavity results from

A

Endoderm

43
Q

_________ gives rise to the organs of circulation, excretion and reproduction including muscles, connective tissues and blood cells

A

Mesoderm

44
Q

Coelem often acts as ________ skeleton

A

Hydrostatic skeleton

Bio 113 (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions