A Baby's First Smile,which Can Occur in Newborns Less Than

question 118

Multiple Choice

A baby's first smile,which can occur in newborns less than a week old,is most likely due to

• A) the sight of a human face.
• B) central nervous system activity.
• C) successful bonding with the mother.
• D) gas.

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Definitions:

Asexual Propagation

The reproduction of organisms without the fusion of gametes, resulting in offspring genetically identical to the parent.

Pathogens

Microorganisms or agents that cause disease, including bacteria, viruses, fungi, and parasites.

Senescence

Sum of the processes involving aging, decline, and eventual death of a plant or plant part.

Cytokinin

Plant hormone that promotes cell division; often works in combination with auxin during organ development in plant embryos.