The External Morphological Traits of Two North American Species of Tree

question 32

Multiple Choice

The external morphological traits of two North American species of tree frog ( Hyla versicolor and H . chrysoscelis ) are very similar; therefore, scientists use ____ to distinguish them.

• A) internal anatomy
• B) behavioral traits
• C) homologous appendages
• D) skin coloration
• E) analogous structures

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Definitions:

Adolescence

is a developmental stage between childhood and adulthood characterized by significant physical, psychological, and social changes.

Zygote

The initial cell formed when a new organism is conceived, resulting from the combination of a sperm cell and an egg cell.

Embryo

An early stage of development in multicellular organisms, in humans, it refers to the stage after fertilization and before becoming a fetus.

Fetus

A developing mammal or human from the end of the embryonic stage until birth, during which significant growth and organ development occur.