Why do some fruits have seeds and others have pits?

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You might already know that the seeds of fruits and vegetables are like tiny plants waiting to grow. But you’ve also probably noticed that some fruits have big seeds (often called stones or pits) while others have small seeds!

Both large pits and groups of small seeds have their advantage for the plant. A seed’s goal is to get itself planted in the ground so it can sprout a new plant. The type of seed a plant has in its fruit helps that seed to get what it needs so it can get planted!

Think about a fruit-bearing plant in the wild, and a hungry animal looking for a snack. First, the plant lures in the animal with its delicious, sweet fruit. If the fruit is something like a peach or a plum, the animal is likely to eat the fleshy fruit and then leave the big pit on the ground; this is a perfect situation for the seed, which can now plant itself and grow! If, on the other hand, the fruit has lots of small seeds, the animal is more likely to eat the seeds with the fleshy fruit. This means the seeds come back out some time later in (you guessed it!) the animal’s waste. Luckily for the seeds, the animal’s waste actually makes great fertilizer, and will also help the seeds to grow! Foods with smaller seeds might also rely on wind or water to move their small, lightweight seeds around. – Neat!!

by   (whyzz writer)
  • Exploration

    Get planted!

    Next time you’re near a fruit tree, take a close look at the ground all around it. – Do you see any tiny tree saplings sprouting up where fruits from the tree fell to the ground and their seeds took root?? Why do you think it’s better for a plant’s seeds to get dispersed away from the original plant (like by an animal, wind, water, or other factor), rather than growing right at its base?
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