Which of the Following Is Not a Characteristic of the Echinoderms

question 89

Multiple Choice

Which of the following is not a characteristic of the echinoderms?

• A)They exhibit cephalization
• B)Radial symmetry in adults
• C)Bilateral symmetry in larvae
• D)They have a complete digestive tract
• E)They have spiny skin

---

Definitions:

Autosomes

Chromosomes that are not involved in determining the sex of an organism, typically making up the majority of an organism's chromosomes.

Zygote

The initial cell formed when a new organism is produced by the union of sperm and egg cells, marking the beginning of embryonic development.

Chromosomes

Structures made of DNA and proteins found in the nucleus of most living cells, carrying genetic information in the form of genes.

Monozygotic (MZ) Twins

Twins who originate from a single fertilized egg, resulting in individuals with identical genetic makeup.