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Biology > Chapter 32 > Flashcards

Chapter 32 Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

Tissues

A

Groups of similar cells that act as a functional unit

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2
Q

Cleavage

A

A succession of mitotic cell divisions without cell growth between the divisions

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3
Q

Blastula

A

A multicellular stage which in many animals takes the form of a hollow ball

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4
Q

Gastrulation

A

The layers of embryonic tissues that will develop into adult body parts are produced

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5
Q

Gastrula

A

The resulting developmental stage

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6
Q

Larva

A

Sexually immature form of an animal that is morphologically distinct from the adult usually eat different food and may even have a different habitat then the adult

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7
Q

Ediacaran biota

A

Members of an early group of soft bodied multicellular eukaryotes

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8
Q

Bilaterians

A

clade whose members hav a two-sided or bilaterally symmetric form and a complete digestive tract

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9
Q

Amphibians

A

Frogs and salamanders

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10
Q

Amniotes

A

Reptiles birds and mammals

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11
Q

Mesozoic era

A

251-65.6 mya

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12
Q

Paleozoic era

A

542-251 mya

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13
Q

Cenozoic era

A

65.5 mya -present

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14
Q

Body plan

A

A particular set of morphological and developmental traits integrated into a functional whole, The living animal

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15
Q

Evo devo

A

The interface between evolution and development

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16
Q

Radial symmetry

A

Does not have a left side and the right side it is equal all around

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17
Q

Bilateral symmetry

A

Such as a lobster has a left side and the right side

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18
Q

Ectoderm

A

The germ layer covering the surface of the embryo gives rise to the outer covering of the animal

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19
Q

Endoderm

A

The innermost germ later Lines the pouch that forms during gastrulation

20
Q

Diploblastic

A

Only have ectoderm and endoderm germ layers

21
Q

Mesoderm

A

Fills much of the space between the ectoderm in the endoderm. All bilaterally symmetrical animals have a third germ layer

22
Q

Triploblastic

A

Having three germ layers. Animals with bilateral symmetry have this.

23
Q

Body cavity or coelom

A

A fluid or air filled space located between the digestive tract and the outer body will all

24
Q

Coelomates

A

Animals with a true coelom

25
Q

Pseudocoelom

A

A body cavity that is formed from mesoderm and endoderm. “ false” body cavity.

26
Q

Pseudocoelomates

A

Animals that have a coelomate. Also known as tissue derived from mesoderm.

27
Q

Acelomates

A

Animals that like a body cavity all together

28
Q

Ecdysis

A

The process of shedding old exoskeleton

29
Q

Eumetazoa

A

A class of animals with true tissues

30
Q

Archenteron

A

Embryos developing digestive tube initially forms as a blind pouch. Which becomes the gut.

31
Q

Blastopore

A

The indentation that during gastrulation leads to the formation of the archenteron

32
Q

Metazoa

A

Clare that all animals evolved from

33
Q

Bilateria

A

Clade that majority of animals are in. Have bilateral symmetry and the presence of threee germ layers.

34
Q

Threee major clades of bilaterial animals?

A

Dueterostomia, lophotrophozoans, and ecdysozoa

35
Q

Chordata

A

The only clade with vertebrates

36
Q

Two major clades that are entirely composed of inverts

A

Ecdysozoa and lophotrophozoans

37
Q

Ecdysozoa

A

Characteristic shared by nematoads, anthropoids , and some of the other ecdysozoan phyla. Secreted external exoskeleton, molts, squirms out of the exoskeleton, and secretes a larger one

38
Q

Lophotrophozoans

A

Two different features. Develop a structure called lophophore, a crown of ciliated tentacles that function in feeding. Distinctive development stage called loohotrophore larva.

39
Q

Porifera

A

Sponges phylum

40
Q

Monophyletic

A

A group of rasa that consists of of a common ancestor and all of its descendants

41
Q

Diploblastic

A

Two germ layers

42
Q

Triploblastic

A

Three germ layers. May have pdeudocoleom or a true coelom

43
Q

What is a characteristic unique to animals

A

Gastrulation

44
Q

The distinction between sponges and other animal phyla is based mainly on the absence versus the presence of?

A

True tissues

45
Q

Which of the following was probably the least important factor in bringing about the Cambrian explosion?

A

The movement of animals onto land

Biology (12 decks)

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