Question 1

During gastrulation the blastocoel becomes

Accepted Answer

A)   the coelom.
B)   the archenteron.
C)   the blastopore.
D)   filled with the hypoblast.
E)   obliterated.F) A) and B)
G) A) and E)

Question 2

Nervous tissue forms from

Accepted Answer

A)   ectoderm.
B)   mesoderm.
C)   endoderm.
D)   a combination of ectoderm and mesoderm.
E)   coelom.F) A) and D)
G) D) and E)

Question 3

If a zygote has a high concentration of yolk that is unevenly distributed, then cytokinesis

Accepted Answer

A)   takes place throughout the embryo, but cleavage divisions proceed more slowly in the vegetal region.
B)   takes place throughout the embryo, but cleavage divisions proceed more slowly in the animal region.
C)   takes place throughout the embryo, and cleavage divisions proceed at about the same rate in all parts of the embryo.
D)   is confined to the yolk and produces a disc of cells between the yolk and the cavity.
E)   is confined to the yolk-free portion of the zygote.F) A) and E)
G) D) and E)

Question 4

Cell shape is a common feature during the process of morphogenesis. Which of the components of the cytoskeleton is the most important in driving cell morphology changes during this developmental stage?

Accepted Answer

A)   Microfilaments
B)   Microtubules
C)   Actin filaments
D)   Intermediate filaments
E)   All of the cytoskeletal structural proteins are equally important during morphogenesisF) None of the above
G) B) and E)

Exam 21: Animal Development

Cell shape is a common feature during the process of morphogenesis. Which of the components of the cytoskeleton is the most important in driving cell morphology changes during this developmental stage?

Correct Answer
verified

If a zygote has a high concentration of yolk that is unevenly distributed, then cytokinesis

Correct Answer
verified

During gastrulation the blastocoel becomes

Correct Answer
verified

Nervous tissue forms from

Correct Answer
verified

Exam 21: Animal Development

Cell shape is a common feature during the process of morphogenesis. Which of the components of the cytoskeleton is the most important in driving cell morphology changes during this developmental stage?

Correct AnswerverifiedShow Answer

If a zygote has a high concentration of yolk that is unevenly distributed, then cytokinesis

Correct AnswerverifiedShow Answer

During gastrulation the blastocoel becomes

Correct AnswerverifiedShow Answer

Nervous tissue forms from

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified