Asked by Joscelyn Riddles on Apr 28, 2024
Verified
Which group is characterized by radially symmetrical members?
A) arthropods
B) cnidarians
C) flatworms
D) mollusks
E) annelids
Radially Symmetrical
An attribute of organisms that can be divided into identical halves along any plane that passes through the central axis, common in many jellyfish and sea anemones.
Cnidarians
A phylum of aquatic invertebrate animals that includes jellyfish, corals, and sea anemones, characterized by their specialized stinging cells called cnidocytes.
Echinoderms
A phylum of marine animals characterized by radial symmetry, a calcareous skeleton, and a complex water vascular system, including starfish, sea urchins, and sea cucumbers.
- Evaluate and compare the different patterns of body symmetry found in animal life.
Verified Answer
MO
Mohamed OsmanMay 04, 2024
Final Answer :
B
Explanation :
Radial symmetry is a characteristic feature of cnidarians, such as jellyfish and corals. They are characterized by having body parts arranged around a central axis, resembling the spokes of a wheel. Arthropods, flatworms, mollusks, and annelids are bilaterally symmetrical.
Learning Objectives
- Evaluate and compare the different patterns of body symmetry found in animal life.