Echinoderms and Hemichordates Are More Closely Related to Mammals Than

question 8

Multiple Choice

Echinoderms and hemichordates are more closely related to mammals than to crabs and shrimp.Indicate below if this statement is True or False,followed by the correct reasoning for that answer.Check all of the answer choices that apply.

• A) True.Echinoderms,hemichordates,and mammals are all deuterostomes.
• B)False.Crabs,shrimp,echinoderms and hemichordates are all invertebrates and chordates are vertebrates.
• C)True.Echinoderms,hemichordates,and mammals all share developmental characteristics including determinant cleavage and a mouth that forms in the region of the blastopore.
• D) True.This relationship is supported by molecular evidence.

---

Definitions:

Piaget

Jean Piaget was a Swiss psychologist known for his pioneering work in the study of child development and his theory of cognitive development.

Middle Childhood

A developmental stage ranging approximately from 6 to 12 years of age, characterized by significant growth in cognitive, emotional, and social domains.

Phobias

Intense, irrational fears of specific objects, activities, or situations that lead to avoidance behavior.

Irrational Fears

Fears that are disproportionate to the actual danger posed by a specific object or situation, often not based on logic or reason.