Explanation:

- Deuteromycetes:

- Commonly known as imperfect fungi.

- Only the asexual or vegetative phases of these fungi are known.

- They lack the sexual reproduction stage, which is present in other classes.

- Correct Answer.

- Basidiomycetes:

- Known for their club-shaped reproductive structures called basidia.

- They reproduce sexually via basidiospores.

- Ascomycetes:

- Known for their sac-like structures called asci.

- They can reproduce sexually via the formation of ascospores.

- Phycomycetes:

- Early classification term, now less commonly used.

- Generally refers to lower fungi with varied reproductive methods.

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