Animal tissues and development MCQs

Question 1

Which process leads to the formation of a blastula during early embryonic development

a) Neurulation
b) Blastulation
c) Differentiation
d) Gastrulation
e) Cleavage

Answer 1

e) Cleavage

Question 2

During gastrulation, which germ layer gives rise to the nervous system?

a) Ectoderm
b) Mesoderm
c) Endoderm
d) Neuroderm
e) Exoderm

Answer 2

a) Ectoderm

Question 3

Which event immediately follows fertilization in animal embryos?

a) Differentiation
b) Neurulation
c) Cell Cycle
d) Gastrulation
e) Cleavage

Answer 3

e) Cleavage

Question 4

Which germ layer gives rise to muscles, bones, and the circulatory system in vertebrate embryos?

a) Ectoderm
b) Mesoderm
c) Endoderm
d) Exoderm
e) Myoderm

Answer 4

b) Mesoderm

Question 5

Which structure forms the first opening into the developing embryo?

a) Notochord
b) Blastocyst
c) Neural tube
d) Blastopore
e) Grey crescent

Answer 5

d) Blastopore

Question 6

Which developmental process leads to the formation of the notochord and neural tube in Xenopus laevis embryos?

a) Gastrulation
b) Neurulation
c) Radial Cleavage
d) Meroblastic Cleavage
e) Differentiation

Answer 6

b) Neurulation

Question 7

Which of the following statements about induction in embryos is correct?

a) Induction primarily relies on genes being turned on or off within cells, independently of signalling between cells.
b) Induction is a mechanism where environmental factors directly dictate the development of the embryo.
c) Induction is a process where one group of cells or tissues influences the development of neighbouring cells or tissues.

Answer 7

c) Induction is a process where one group of cells or tissues influences the development of neighbouring cells or tissues.