Asked by Tyrique Spells on May 02, 2024
Verified
Which animals have a collagen cuticle, a pseudocoelom, a tubular digestive system and no respiratory or circulatory organs?
A) roundworms
B) cnidarians
C) flatworms
D) annelids
E) sponges
Pseudocoelom
Fluid-filled cavity between the gut and body wall; partially lined by tissue derived from mesoderm.
Tubular Digestive System
A type of digestive system in which the digestive tract forms a continuous tube from mouth to anus, allowing for sequential processing of food.
Roundworms
A group of invertebrates belonging to the phylum Nematoda, characterized by long, cylindrical bodies.
- Familiarize oneself with the fundamental body structures of significant animal phyla and their patterns of growth.
- Recognize the importance and mechanisms of diversity in animal adaptation to various environments.
Verified Answer
MV
Marco ValdezMay 08, 2024
Final Answer :
A
Explanation :
Roundworms have a collagen cuticle, a pseudocoelom, a tubular digestive system, and no respiratory or circulatory organs. Cnidarians have a gastrovascular cavity instead of a true digestive system, flatworms have a simple digestive system with only one opening, annelids have a closed circulatory system, and sponges have no true tissues or organs.
Learning Objectives
- Familiarize oneself with the fundamental body structures of significant animal phyla and their patterns of growth.
- Recognize the importance and mechanisms of diversity in animal adaptation to various environments.