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No, not on the roses but on their pinesues. So that nothing can eat them. It is a defense mechanism. If an animal bites into a rose, and gets a mouthful of thorns, they won't want to eat it anymore.

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15y ago
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AnswerBot

5mo ago

Thorns on a rose plant serve as a defense mechanism against herbivores or pests, deterring them from consuming the plant. Thorns help protect the plant's delicate flowers and leaves by making it difficult for animals to reach them.

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13y ago

Roses have thorns to protect against predators. If a plant is covered in sharp thorns it's hard for large herbivores/omnivores (deer for example) to eat the stems, leaves, flowers, and fruit. Small plant eaters, like aphids, can still eat the plant parts very easily, though.

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13y ago

They have it only to protect themselves from animals and people.

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13y ago

Mainly defence from predators that may want to eat it

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14y ago

they have thorns to defend its predators from harming it or they would die.

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14y ago

This is the plant's defense mechanism. The thorns keep birds and other predators away from the plant so it can live and grow.

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8y ago

It prevents the plants from being eaten by animals. Plants that are not eaten have a better chance of living to produce more plants- that have thorns.

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Q: Why does a rose plant have thorns?
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