Tutor profile: Lawrence F.
A species tropical flower produces sweet nectar that is fed on by bats. When the bats feed, pollen from the flower sticks to their fur. When the bats move on to another flower, some of the pollen falls off of their fur and fertilizes the new flower. This is an example of what kind of symbiosis?
Mutualism: both species benefit from their relationship. The bats receive food from the flower, while the spread of pollen helps the flower reproduce.
Which cranial nerves innervate each of the extrinsic muscles of the eye?
Oculomotor (CN III): superior rectus, inferior rectus, medial rectus, inferior oblique, levator palpebrae superioris Trochlear (CN IV): superior oblique Abducens (CN VI): lateral rectus
You have discovered a new species of fossil primate. It has a large body and its molar teeth have distinct shearing crests. What can we infer about the diet of this new species?
This species was likely a folivore (ate leaves). Leaves are abundant in primate habitats and can support the energy requirements of a large-bodied animal. Shearing crests shred leaves when they are chewed and are often regarded as an adaptation to folivory.
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