32.1 reproduction and development

Question 1

zygote to larvae

Answer 1

zygote
-cleavage
blastula
-gastrulation
gastrula
larva

Question 2

cleavage

Answer 2

a succession of mitotic cell divisions without cell growth between division cycles

-forms the blastula

Question 3

blastula

Answer 3

hollow ball

Question 4

gastrulation

Answer 4

layers of embryonic tissue that will develop into adult body parts are produced
(one end of the blastula folds into the blastocoel to make a 2 layer ball)
-makes a gastrula

Question 5

gastrula

Answer 5

2 layer pouch/ball of cells

Question 6

blastocoel

Answer 6

the inside of the blastula

Question 7

archenteron

Answer 7

the inside of the gastrula

the pouch

Question 8

larva

Answer 8

a sexually immature form of an animal that is morphologically distinct from the adult

Question 9

metamorphosis

Answer 9

developmental transition that turns a larva into a juvenile

Question 10

all eukaryotes have genes that regulate the expression of other genes in DNA sequences called

Answer 10

homeoboxes

Question 11

hox genes

Answer 11

important in the development of animal embryos