Mushrooms belong to which kingdom?

Mushrooms are heterotrophic organisms that obtain nutrients by absorption, a key characteristic of the Fungi kingdom.

• Fungi (A) is correct because mushrooms are indeed fungi, characterized by their cell walls made of chitin and their method of nutrient absorption.
• Plantae (B) is incorrect; plants are autotrophic, producing their own food through photosynthesis, which mushrooms do not do.
• Animalia (C) is incorrect; animals are heterotrophic but ingest their food, and their cells lack cell walls.
• Protista (D) is incorrect; protists are a diverse group of eukaryotic microorganisms, but mushrooms have a more complex, multicellular structure and distinct fungal characteristics.