12. A main difference between fungi and plants is that fungi
a. have cell walls.
b. produce spores.
c. cannot make food.
d. all of the above.
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cannot make food.
To determine the main difference between fungi and plants, let's go through each option and see which one applies only to fungi.
a. Have cell walls: Both fungi and plants have cell walls, so this is not a main difference.
b. Produce spores: Both fungi and plants can produce spores, so this is not a main difference either.
c. Cannot make food: This is the main difference between fungi and plants. While plants are capable of photosynthesis and can produce their own food using sunlight, water, and carbon dioxide, fungi cannot make their own food through photosynthesis. Fungi are heterotrophic, which means they obtain nutrients by absorbing them from their surroundings.
Therefore, the correct answer is c. cannot make food.