Cedar-apple rust is caused by what type of organism?

Cedar-apple rust is caused by what type of organism?

• A. Fungus
• B. Bacteria
• C. Virus
• D. Nematode

Answer: (A)

Cedar-apple rust is caused by a fungus. Rust fungi are plant pathogens that invade tissues and produce distinctive spore-bearing structures, often giving leaves or stems a rusty, orange appearance. This disease has a characteristic life cycle that alternates between two hosts—cedars (or junipers) and apples—highlighting the complex biology of rust fungi. This differentiates it from bacteria (prokaryotes), viruses (acellular parasites), and nematodes (multicellular worms). So the causal agent is a fungus, specifically a rust fungus.

Cedar-apple rust is caused by a fungus. Rust fungi are plant pathogens that invade tissues and produce distinctive spore-bearing structures, often giving leaves or stems a rusty, orange appearance. This disease has a characteristic life cycle that alternates between two hosts—cedars (or junipers) and apples—highlighting the complex biology of rust fungi. This differentiates it from bacteria (prokaryotes), viruses (acellular parasites), and nematodes (multicellular worms). So the causal agent is a fungus, specifically a rust fungus.