To make them more attractive

To help them adapt to their environment

To increase their size

To change their color

By having short roots

By storing water in their leaves

By having long roots and storing water in their stems

By growing rapidly

Thick stems

Deep roots

Broad leaves

Colorful flowers

By emitting a sweet scent

By making noise

By having bright colors

By producing a sweet liquid

To store nutrients

To help in photosynthesis

To attract pollinators

To repel predators