Lab LE 1

Question 1

Meiosis

Answer 1

Reduction division

The resulting daughter cell gets HAPLOID chromosome number

Question 2

Gonia

Answer 2

Group of cells within the animal (a general term)

Question 3

Gametes

Answer 3

A mature haploid male or female reproductive cell

Contain HAPLOID chromosomes

Question 4

Spermatozoa

Answer 4

Male gametes; also called SPERM

Arise FROM spermatogonia

Question 5

Spermatogonia

Answer 5

Where spermatoZOA comes from

Question 6

Ova (egg)

Answer 6

Female gametes

Arise from ooGONIA

Question 7

Oogonia

Answer 7

Where ova comes from

Question 8

Gametogenesis

Answer 8

First stage of animal development that involves meiosis of the gonia

Question 9

Fertilization

Answer 9

Union of male and female gametes

Question 10

Zygote

Answer 10

UNICELLULAR, produced by fertilization, DIPLOID

Question 11

Mitosis

Answer 11

Cell divisions

Question 12

Cleavage

Answer 12

Gives rise to multicellular embryo called blastula

Question 13

Blastula

Answer 13

Multicellular embryo resulting from cleavage

Question 14

Gastrulation

Answer 14

Blastula –> GASTRULA. Its cells go through various morphogenetic movements in which cells migrate to different parts of the gastrula as germ layers are formed

Question 15

Gastrula

Answer 15

What the blastula changes into. Has germ layers

Question 16

Triploblastic

Answer 16

Three germ layers
ENDODERM - innermost
MESODERM - intermediate
ECTODERM - outermost

Question 17

Diploblastic

Answer 17

Ectoderm and Endoderm only

Question 18

Organogenesis

Answer 18

When germ layers give rise to organs

Question 19

Senescence

Answer 19

Growing old