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8 terms

Animal Life Cycles

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metamorphosis
a series of distinct growth stages that are different from one another
complete metamorphosis
the animal goes through 4 distict changes
larva
an immature stage that does not resemble the adult
pupa
a non-feeding stage in which a hard case-like cocoon surrounds the organism
incomplete metamorphosis
the animal goes through 3 stages that occur gradually
nymph
similar to an adult form, but is smaller and lacks wings and reproductive structures
external fertilization
out of body joining of egg and sperm
internal fertilization
joining of sperm and egg cells inside a female body