Question

drag each tile to the correct location.

match each organism with the correct type of body cavity.

pseudocoelom
coelom

Explanation:

Identify the organisms shown in the image

The image displays four different organisms that need to be categorized by their type of body cavity:

1. Shrimp (top-left): An arthropod.
2. Roundworm (top-right): A nematode.
3. Jellyfish (bottom-left): A cnidarian.
4. Fish (bottom-right): A chordate (vertebrate).

Understand body cavity classifications

Animal body plans are classified based on the presence and nature of a fluid-filled body cavity (coelom):

• Coelomates (Coelom): Possess a true coelom, a fluid-filled body cavity completely lined by tissue derived from the mesoderm.
• Pseudocoelomates (Pseudocoelom): Possess a body cavity that is only partially lined by tissue derived from mesoderm (between the mesoderm and endoderm).
• Acoelomates: Lack a body cavity between the digestive tract and outer body wall altogether.

Classify each organism

• Roundworm (Nematoda): Nematodes are classic examples of pseudocoelomates. Their body cavity is a pseudocoelom.
• Shrimp (Arthropoda): Arthropods are coelomates. Although their coelom is reduced in adults to form a hemocoel, they phylogenetically and developmentally possess a true coelom.
• Fish (Chordata): Chordates are true coelomates with a well-developed coelom containing internal organs.
• Jellyfish (Cnidaria): Cnidarians are diploblastic (having only ectoderm and endoderm, lacking mesoderm) and do not have a body cavity (coelom or pseudocoelom) at all; they are acoelomate.

Determine correct matching locations

Based on standard biology curricula for this drag-and-drop interface:

• Pseudocoelom: Roundworm (Nematode).
• Coelom: Shrimp (Arthropod) and Fish (Chordate).

(Note: Jellyfish, being a cnidarian, lacks a coelom/pseudocoelom entirely, but in simplified classification tasks, only the matching pairs for the categories are submitted).

Let's organize the final matching:

• Pseudocoelom: Roundworm
• Coelom: Shrimp, Fish

(Note: The jellyfish is an acoelomate and does not belong to either category).

Answer:

The correct matching of each organism to its body cavity type is:

• Pseudocoelom:
• Roundworm (top-right image)

• Coelom:
• Shrimp (top-left image)
• Fish (bottom-right image)

(Note: The jellyfish in the bottom-left image is a cnidarian, which is diploblastic and lacks a body cavity entirely, meaning it does not belong in either category).