GCU BIO-182 EXAM 3 CH. 32, 33, 34, 40, 41, 42 & 47 QUESTIONS AND ANSWERS

GCU BIO-182 EXAM 3 CH. 32, 33, 34,
40, 41, 42 & 47 QUESTIONS AND
ANSWERS



What is the ion needed for the formation of the fertilization envelope - Correct Answers -
Ca2+

Order of embryonic development - Correct Answers -Fertilization, Cleavage,
Gastrulation, Organogenesis

Blastocyst - Correct Answers -human equivalent of the blastula

Blastomere - Correct Answers -Essential part of blastula formation

first two cleavage furrows in frogs - Correct Answers -4 equally sized blastomeres

Third Cleavage - Correct Answers -Asymmetric forming unequally sized blastomeres

Gastrulation - Correct Answers -Movement of cells from blastula surface to interior of
embryo

germ layers - Correct Answers -ectoderm, mesoderm, endoderm

Endoderm - Correct Answers -innermost germ layer; develops into the linings of the
digestive tract and much of the respiratory system

Mesoderm - Correct Answers -middle layer, partly fills space between endoderm and
ectoderm

Ectoderm - Correct Answers -the outer germ layer that develops into skin and nervous
tissue

Extraembyonic membranes for land vertebrates - Correct Answers -Chorion, Allantois,
Amnion, and Yolk Sac

Difference animal and fungal heterotrophy - Correct Answers -Animals ingest the food