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Bio Chapter 21

Terms

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The Mars Exploration Rovers were equipped with independent “legs” and wheels to give it ______________ and _______________.
Stability, flexibility
Instead of a hard shell, arthropods invented an __________________ to wear outside their body.
Exoskeleton
The exoskeleton is the most successful innovation that came from the ______________ explosion.
Cambrian
_____________________ were likely to be the fist animals to venture onto land.
Horseshoe crabs
Over ____________ percent of known animal species are insects.
90
Flowering plants are classified as _____________________.
Angiosperms
Flowers house both _______________ and ________________ reproductive organs.
Male, female
Flowers have evolved to use ____________________ as couriers for their pollen.
Animals
Flowers that can be pollinated by a wide variety of insects are ________________.
Generalists
The dead horse arum attracts pollinators by smelling of ___________________.
Rotten flesh
_____________________ is the mutual evolutionary influence between 2 species that become dependent on each other.
Co-evolution
Plants produce _______________ to function as a reward for visiting insects.
Nectar

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