Zoology Lab quiz 4

Helpfulness: 0
Set Details Share
created 6 years ago by Adunola_Bello
108 views
Animal Development; Experimental Design
show moreless
Page to share:
Embed this setcancel
COPY
code changes based on your size selection
Size:
X
Show:
1

A mature haploid male or female germ cell that is able to unite with another of the opposite sex in sexual reproduction to form a zygote.

Gamete

2

Cell division of a Zygote

Cleavage

3

An embryo at the stage following the blastula, when it is a hollow cup-shaped structure having three layers of cells.

Gastrula

4

The rudimentary alimentary cavity of an embryo at the gastrula stage.

Archenteron

5

The second stage of larval development in many starfishes

Brachiolaria

6

A diploid cell resulting from the fusion of two haploid gametes; a fertilized ovum.

Zygote

7

An animal embryo at the early stage of development when it is a hollow ball of cells.

Blastula

8

A phase early in the embryonic development of most animals, during which the single-layered blastula is reorganized into a trilaminar ("three-layered") structure known as the gastrula.

Gastrulation

9

Each of the three layers of cells (ectoderm, mesoderm, and endoderm) that are formed in the early embryo.

Germ Layer

10

The body cavity in metazoans, located between the intestinal canal and the body wall.

Coelom

11

The opening of the central cavity of an embryo in the early stage of development.

Blastopore

12

The fluid-filled cavity of a blastula.

Blastocoel

13

A cell formed by cleavage of a fertilized ovum.

Blastomere

14

the innermost layer of cells or tissue of an embryo in early development, or the parts derived from this, which include the lining of the gut and associated structures.

Endoderm

15

when the coelom is lined with mesoderm,providing muscle in the gut to power gut motility.

Eucoelomate

16

Having a body derived from three embryonic cell layers (ectoderm, mesoderm, and endoderm).

Triploblastic

17

A multicellular organism whose mouth develops from a primary embryonic opening.

Protostome

18

Any of a numerous animals, in which the anus develops from the first opening in the embryo and the mouth develops later.

Deuterostome

19

The middle layer of an embryo in early development, between the endoderm and ectoderm.

Mesoderm

20

An invertebrate lacking a coelom

Acoelomate

21

A resistant membranous layer in eggs of many animals that forms following fertilization by the thickening and separation of the vitelline membrane from the cell surface and that prevents multiple fertilization.

Fertilization Membrane

22

The fusion of gametes to initiate the development of a new individual organism

Fertilization

23

The first stage in the larval development of most starfish

Bipinnaria

24

The outermost layer of cells or tissue of an embryo in early development, or the parts derived from this, which include the epidermis and nerve tissue.

Ectoderm

25

any of a group of invertebrates with a three-layered body that has a fluid-filled body cavity between the endoderm and the mesoderm.

Pseudocoelomate