Question

multiple choice question
animals that do not have true tissues are classified as ______, while animals that do have tissues are called eumetazoans.
radiata
parazoa
cnidaria
bilateria

Explanation:

• Radiata: This group includes animals like cnidarians which have true tissues. So this option is incorrect.
• Parazoa: Parazoans (such as sponges) lack true tissues. This fits the description in the question.
• Cnidaria: Cnidarians are eumetazoans with true tissues. So this option is wrong.
• Bilateria: Bilaterians are a group of eumetazoans with bilateral symmetry and true tissues. So this option is incorrect.

Answer:

Parazoa