Question Detail

BIO 102 Objective Question

Question

Some dung fungi require passage through the digestive system of herbivores to complete their lifecycle because:
Options
A Digestive enzymes activate the spores
B The spores are rarely completely degraded and can germinate after passing through
Correct Answer
C Herbivore stomach acid is required for spore formation
D The fungus cannot reproduce without animal hormones
Correct Answer

Option B is the correct answer.

Detailed Explanation

Fungal spores are rarely completely degraded in the gastrointestinal tract of an animal, and many are able to germinate when they are passed in the faeces. Some dung fungi actually require passage through the digestive system of herbivores to complete their lifecycle.

Hint

Think about the dispersal advantage of surviving digestion and being deposited in nutrient-rich feces.

Question Info