Which kingdom consists of multicellular organisms without cell walls?

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Prepare for your College Biology Exam 1 with flashcards and multiple choice questions. Test your understanding with detailed explanations and hints to ensure success in your biology exam!

Multiple Choice

Which kingdom consists of multicellular organisms without cell walls?

Explanation:
Multicellular organisms without cell walls are animals. Animals have cells that connect with an extracellular matrix and cell junctions rather than rigid walls, giving tissues and organs more flexibility and the ability to move. Plants and fungi both have cell walls (cellulose in plants, chitin in fungi), so they do not fit the criterion. Protists are a diverse group, but the characteristic combination described—multicellular and lacking cell walls—points to the animal kingdom.

Multicellular organisms without cell walls are animals. Animals have cells that connect with an extracellular matrix and cell junctions rather than rigid walls, giving tissues and organs more flexibility and the ability to move. Plants and fungi both have cell walls (cellulose in plants, chitin in fungi), so they do not fit the criterion. Protists are a diverse group, but the characteristic combination described—multicellular and lacking cell walls—points to the animal kingdom.

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