In contrast to Kingdoms Animalia and Plantae, the organisms of Kingdom Fungi have

Explanation

The correct answer is B: nuclear mitosis. Fungi are unique in that they perform nuclear mitosis, where their nuclear envelope remains intact during division, unlike plants and animals. Option A is incorrect because both fungi and plants have cell walls, although of different materials. Option C is incorrect because centrioles are characteristic of animal cells, not fungi. Option D is incorrect because although fungi are heterotrophic, this trait is shared with animals and does not exclusively define fungi.