How does animal predation on seeds and fruits differ from animal predation on leaves/stems of plants

When an animal eats seeds or a fruit, the seeds can have a hard enough seed coat that they can survive the passage through the animal's digestive tract, provided they aren't chewed. Then the seeds are discharged with the rest of the waste. Seeds that survive can then germinate to grow a new plant somewhere away from the plant that produced them as long as the soil, water, and light conditions permit.

Leaves and stems that get eaten by animals won't produce new plants.