Distinguish between phyla Cnidaria and Ctenophora. Outline five characteristics of nematodes. Describe five types of cells found in sponges.
Understand the Problem
The question is asking for a distinction between the phyla Cnidaria and Ctenophora, which are both classifications of animal life, as well as outlines of characteristics for nematodes and descriptions of cell types found in sponges. This requires an understanding of biology and taxonomy.
Answer
Cnidaria have stinging cells; Ctenophora have colloblasts. Nematodes are cylindrical, have cuticles, and a complete gut. Sponge cells: choanocytes, amoebocytes, porocytes, pinacocytes, sclerocytes.
The phylum Cnidaria is distinguished by the presence of cnidocytes (stinging cells) and tissues, while Ctenophora lacks cnidocytes but possesses colloblasts for prey capture. Nematodes have features like elongated, cylindrical bodies; complete digestive systems; and cuticle-covered exteriors. Sponges contain cells like choanocytes (filter feeding), amoebocytes (distribution of nutrients), porocytes (water flow regulation), pinacocytes (outer covering), and sclerocytes (spicule production).
Answer for screen readers
The phylum Cnidaria is distinguished by the presence of cnidocytes (stinging cells) and tissues, while Ctenophora lacks cnidocytes but possesses colloblasts for prey capture. Nematodes have features like elongated, cylindrical bodies; complete digestive systems; and cuticle-covered exteriors. Sponges contain cells like choanocytes (filter feeding), amoebocytes (distribution of nutrients), porocytes (water flow regulation), pinacocytes (outer covering), and sclerocytes (spicule production).
More Information
Cnidarians are known for their radial symmetry and simple tissues, while ctenophores are exclusively marine and use cilia for movement. Nematodes thrive in various environments due to their robust body structure.
Tips
Don't confuse cnidocytes with colloblasts. Nematodes are nematodes, not annelids due to their pseudocoelom. Sponges are filter feeders; remember the functions of cells.
Sources
- Difference between Cnidaria and Ctenophora - BYJU'S - byjus.com
- 15.2: Sponges and Cnidarians - Biology LibreTexts - bio.libretexts.org
AI-generated content may contain errors. Please verify critical information
