Select the correctly matched phylum with their character:
* Mollusca - Body has head, thorax, and abdomen
* Echinodermata - Calcareous spicules
* Annelida - Eucoelom
* Hemichordata - Proboscis gland for respiration
Answer (2)
The correct phylum match is Annelida - Eucoelom . The other options contain inaccuracies in their descriptions. Echinoderms and Hemichordates are described incorrectly based on their characteristics.
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To answer the question of which phylum is correctly matched with its character, let's analyze each option provided:
Mollusca - Body has head, thorax, and abdomen : This is incorrect. Mollusca typically have a body divided into the head, visceral mass, and foot. They do not have a distinct thorax and abdomen as seen in arthropods.
Echinodermata - Calcareous spicules : This is incorrect. Echinoderms, such as starfish and sea urchins, have an endoskeleton made of calcareous plates or ossicles, not spicules.
Annelida - Eucoelom : This is correct. Annelids, like earthworms and leeches, have a true coelom (eucoelom), which is a fluid-filled body cavity completely lined by mesodermal tissue. This allows for greater organ development and space for organ systems.
Hemichordata - Proboscis gland for respiration : This is generally correct. Hemichordates have a structure called a proboscis, which is involved in feeding and potentially in some aspects of respiration.
Therefore, the correct answer is that "Annelida - Eucoelom" is the correctly matched phylum with their character. Annelids are known for their segmented bodies and a well-developed coelomic cavity.
