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15 Cards in this Set
- Front
- Back
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The oldest living organism on Earth is the _________ which waas estimated at _______ years old
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Bristlcone Pine Tree, 4600
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In the early 20th century the life expectancy was _______ years old and today it is much greater (77-81 years), which can be attributed to ________ advances
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50, Technological
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ICSI is a fertilization technique where _________ is directly injected into the _____.
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Sperm, egg
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Forming the ________ is the first step of the life cycle
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Blastocyst
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The Gaint clam releases ________ first into the ocean and then waits 30 minutes before releasing the _______, this helps to avoid self-fertilization
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Sperm, egg
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The christmas island crab make a pilgrimage to the shore to lay their________ in the ocean even though they redie on ________
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eggs, land
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Placemental mammals evolved a ___________ which allows them to develop a fertilized egg into a fully formed animal
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Uterus
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After fertilization the embryo attaches to the uterus and produces the ________ which will transfer the nutrients gained from the mother to the fetus
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Placenta
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The Maxium ________ ________ represents the biological limit of a species.
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Life Span
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What is the Maximum life span and give 4 examples of how it differs between species
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Look at study guide
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How was the age of the bristlecone pine determined and how did this help in understanding history
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Look at study guide
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What factors determine the life expectancy and what has contributed to the increase in longevity
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Look at study guide
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What are the three types of mammals? What are their different ways of giving birth
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Look at study guide
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Why are placental mammals so successful
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Look at study guide
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Distinguish between the terms life expectancy and life span. The pacific sockeye salmon provides an excellent demonstration of the various componets of the life cycle. Explain the components of the life cycle and describe each phase wsing the salon as an example
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Look at study guide
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