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43 Cards in this Set
- Front
- Back
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metamorphosis |
a series of distinct growth stages that are different from one another |
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complete metamorphosis |
animal goes through 4 distinct stages |
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larva |
an immature stage of an organism that does not resemble an adult |
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pupa |
a nonfeeding stage during which a hard, caselike coccoon surrounds the organism |
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imcomplete metamorphosis |
organism goes through 3 stages that gradually occur |
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nymph |
similar to an adult but lacks some adult structures |
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how does complete metamorphosis differ from incomplete metamorphosis |
complete is 4 distinct stages: egg, larva, pupa and adult; incomplete is 3 gradual stages: egg, nymph and adult |
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what happens during the nymph stage of incomplete metamorphosis |
the organism gets bigger but keeps the same basic shape and form |
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what happens during the pupa stage of complete metamorphosis |
the organism's body inside the hard cocoon completely changes |
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what are some of a butterfly's changes in the pupa |
growing wings, different mouth parts, new muscles and different legs |
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external fertilization |
this joining of egg and sperm outside the female's body |
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internal fertilization |
the joining of sperm and egg cells inside the female's body |
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How are delicate sex cells protected during external fertilization |
they are kept wet in water so they do not dry out |
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why is internal fertilization important to an animal |
protects the sex cells and the fertilized egg from drying out, dangers in the environment and other organisms |
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compare external and internal fertilization |
the sperm and egg join for fertilization |
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contrast external and internal fertilization |
external fertilization: occurs outside of the body and lots of eggs are laid internal fertilization: occurs inside the female, fewer eggs are fertilized |
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If a fish laid eggs on a day with strong currents would this affect reproduction? |
the current could prevent the sperm cells from reaching the eggs, thus preventing fertilization |
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How does a bird's egg protect the embryo developing inside |
the shell keeps the embryo from drying out and the yolk is a food supply for the embryo |
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embryo |
an unborn or unhatched offspring in the process of development |
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how is a fish or amphibian egg protected |
by a jelly-like layer that surrounds the egg |
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what are the 4 stages of complete metamorphosis in order |
egg, larva, pupa, adult |
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what are the 3 stages of incomplete metamorphosis in order |
egg, nymph, adult |
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which fertilization occurs outside the body |
external fertilization |
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how are eggs protected in external fertilization |
laid in water |
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what protects an amphibians eggs |
jelly-like surrounding |
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which metamorphosis means total change |
complete |
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which stage in metamorphosis does the animal not resemble an adult |
larva |
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which stage of metamorphosis means "little adult" |
nymph |
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what are the 2 sex cells |
egg and sperm |
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offspring getting eaten is higher in which fertilization |
external |
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which animal group goes through internal fertilization |
birds, reptiles and mammals |
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which animal group goes through external fertilization |
amphibians and fish |
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if fertilization is successful a ______ develops |
embryo |
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name the 4 stages of a fish life cycle (in order) |
roe, fingerling, juvenile and adult |
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mammals give birth to _____ |
live young |
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which fertilization increases the rate of survival |
internal |
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which metamorphosis does a grasshopper go through |
incomplete |
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which metamorphosis does a frog go through |
complete |
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which metamorphosis does a ladybug go through |
complete |
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what does metamorphosis mean |
life change |
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how are nymphs different from adult insects |
they have no wings or sex organs |
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which animal produces a hard shelled egg that matures outside the mother |
chicken (bird) |
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the purpose of an egg yolk is to ____ |
feed the growing embryo |
