Question

claim, evidence, reasoning (cer) name lya rodriguez class 4a fill in the information for the activity using the assigned reading. question: how are cnidarians different from poriferans (sponges)? claim: the answer to the question. ★ must be based on the evidence gathered. ★ must clearly answer the question. my claim is: cnidarians are different to poriferans because they both have different cells and body structures evidence: scientific data gathered to help answer the question. ★ an opinion is not evidence. ★ not all data is considered relevant evidence. ★ cite both observational and measured data when possible. ★ include multiple pieces of evidence to support the claim: written, numerical, or charts and graphs. evidence 1: source: evidence 2: source: evidence 3: source: reasoning: why does the evidence support the claim? ★ a “because” statement. ★ incorporates background knowledge. ★ makes connections to scientific concepts to draw conclusions. my reasoning is:

Explanation:

Sponges are poriferans. Cnidarians and poriferans have different cell - types. Cnidarians have specialized cells like cnidocytes for defense and capturing prey, while poriferans have choanocytes for filter - feeding. Their body structures also vary; cnidarians have a more complex, radially symmetrical body with a gastrovascular cavity, and poriferans are asymmetrical with a porous body for water circulation. Evidence 1 could be: Cnidarians have a two - layer body structure (ectoderm and endoderm) while poriferans have a more loosely organized cell arrangement. Source: Biology textbook. Evidence 2: Poriferans lack true tissues and organs, while cnidarians have simple tissues. Source: Classroom lecture notes. Evidence 3: Cnidarians can exist in polyp and medusa forms, while poriferans have a more static body form. Source: Online biology resource. The evidence supports the claim because these differences in cell - types and body structures are fundamental biological characteristics that distinguish the two groups.

Answer:

Evidence 1: Cnidarians have a two - layer body structure (ectoderm and endoderm) while poriferans have a more loosely organized cell arrangement. Source: Biology textbook.
Evidence 2: Poriferans lack true tissues and organs, while cnidarians have simple tissues. Source: Classroom lecture notes.
Evidence 3: Cnidarians can exist in polyp and medusa forms, while poriferans have a more static body form. Source: Online biology resource.
My reasoning is: These differences in cell - types and body structures are fundamental biological characteristics that distinguish cnidarians from poriferans.