Asexual spores produced terminally on hyphae are called

The correct option is Conidia.

In fungi, asexual reproduction occurs through various types of spores. Let's break down the concepts to understand why "Conidia" is the correct answer:
1. Conidia (singular: conidium): These are non-motile, asexual spores that are produced exogenously (externally) at the tips or sides of specialized hyphae called conidiophores. Because they are formed externally and terminally on these hyphal structures, they match the description of asexual spores produced terminally on hyphae.
2. Sporangiophores: These are specialized hyphal structures that bear a sporangium (a sac-like structure) at their tip. The asexual spores produced inside the sporangium are called sporangiospores, which are formed endogenously (internally), not directly on the hyphae terminally.
3. Meiospores: These are sexual spores produced via meiosis (such as ascospores or basidiospores), rather than asexual spores.
4. Anthospores: This term is not a standard category for asexual fungal spores produced terminally on hyphae.

Therefore, asexual spores that are produced terminally on hyphae are called Conidia.