Which statement is true about Porifera as compared to many other animals?

Which statement is true about Porifera as compared to many other animals?

• A. They Lack True Tissues
• B. They Have a Complete Digestive Tract
• C. They Possess a Nerve Net
• D. They Have Segmented Bodies

Answer: (A)

Understanding tissue organization in animals: Porifera lack true tissues. Sponges are built from unspecialized cells that can move and change position, rather than integrated layers of cells forming tissues and organs. This cellular-level organization means they don’t have true tissue types like epithelia, muscles, or nerves. Their feeding relies on a simple canal system with choanocytes and amoebocytes, and digestion occurs inside cells rather than in a gut. They also don’t have a nervous system or segmented body plans, which are features that accompany tissue-grade organization in many other animals. So the statement that Porifera lack true tissues best captures their basic biological makeup and how it differs from most other animals.

Understanding tissue organization in animals: Porifera lack true tissues. Sponges are built from unspecialized cells that can move and change position, rather than integrated layers of cells forming tissues and organs. This cellular-level organization means they don’t have true tissue types like epithelia, muscles, or nerves. Their feeding relies on a simple canal system with choanocytes and amoebocytes, and digestion occurs inside cells rather than in a gut. They also don’t have a nervous system or segmented body plans, which are features that accompany tissue-grade organization in many other animals. So the statement that Porifera lack true tissues best captures their basic biological makeup and how it differs from most other animals.