Which characteristic do plants, people and flatworms share?
a). they exchange gases with the environment
b). they all have digestive systems that break down food
c). they all undergo photosynthesis
d). they all use a muscular system for movement

Option A

Explanation: Plants, flatworm and people share the similar characteristics as they exchange gases with the environment.

The exchange of gases from the environment takes place differently in different types of organisms.

In case of flatworm it takes place through its skin, plants exchange gases through their leaves and animals respire through lungs.

The common character shared by all the three organism is exchange of gases.

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