BSCS Biology: A Molecular Approach

Chapter 10: Animal Growth and Development

Chapter Test

1.
Which of the following is not an effect of activation?
A)An egg's metabolism is turned on.
B)The nuclei of the egg and sperm fuse.
C)A rapid change in the egg's plasma membrane blocks fertilization by a second sperm.
D)The zygote's cytoplasm is rearranged.
2.
The period in which major organs and tissues develop is known as ____.
A)differentiation
B)cleavage
C)morphogenesis
D)metamorphosis
3.
Hemoglobin, actin, and keratin are examples of ____.
A)proteins produced as specific groups of genes are expressed.
B)cells that specialize into blood and skin because of the way genetic information is expressed.
C)proteins that regulate the production of cells.
D)molecules that protect the plasma membrane of cells.
4.
What are the three germ layers of the gastrula?
A)primary germ layer, secondary germ layer, tertiary germ layer
B)ectoderm, mesoderm, endoderm
C)notochord, neural tube, neurula
D)blastula, dorsal, ventral
5.
What do similarities in development patterns of the embryos of different animals suggest?
A)evolutionary segmentation
B)evolutionary determination
C)evolutionary sequences
D)evolutionary relatedness
6.
How are nutrients and wastes exchanged between mother and fetus in mammals?
A)through the blood flow between mother and fetus
B)through the amnion
C)through the placenta
D)through the blastocyst
7.
What causes spina bifida?
A)the posterior end of the neural tube fails to close
B)the posterior end of the neural tube fails to open
C)the anterior end of the neural tube fails to close
D)the anterior end of the neural tube fails to open
8.
Cloning appears to support the ____ hypothesis.
A)selective-gene-loss
B)genetic-equivalence
C)determination-differentiation
D)DNA-RNA hybridization
9.
What structure in vertebrates produces inducing proteins?
A)sperm
B)endoderm
C)ectoderm
D)notochord
10.
How is determination different in snails embryos compared to frog embryos?
A)Determination occurs independently in each snail cell.
B)Determination of snail embryo cells occurs as snail cells communicate with each other during differentiation.
C)Determination in snail cells occurs after differentiation.
D)Determination can be changed by inducing proteins.
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