The Phylum Chordata Includes Several Subgroups of Organisms

question 20

Multiple Choice

The phylum Chordata includes several subgroups of organisms.To which of these subgroups would humans belong?

• A) vertebrates
• B) cephalochordates
• C) urochordates
• D) monotremes

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Definitions:

Aging

The process of becoming older, a physiological process that leads to the decline of biological functions and the ability to adapt to metabolic stress.

DNA Damage

Refers to changes in the chemical structure of DNA, which can result from environmental factors, such as UV light or radiation, and can lead to mutations if not repaired.

Sexual Maturation

This refers to the physical development stages during puberty in which an individual becomes capable of sexual reproduction.

Early Adolescence

The period typically ranging from ages 10 to 14, marking the beginning of adolescence with significant physical, psychological, and social changes.