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15 Cards in this Set

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The oldest living organism on Earth is the _________ which waas estimated at _______ years old
Bristlcone Pine Tree, 4600
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
50, Technological
ICSI is a fertilization technique where _________ is directly injected into the _____.
Sperm, egg
Forming the ________ is the first step of the life cycle
Blastocyst
The Gaint clam releases ________ first into the ocean and then waits 30 minutes before releasing the _______, this helps to avoid self-fertilization
Sperm, egg
The christmas island crab make a pilgrimage to the shore to lay their________ in the ocean even though they redie on ________
eggs, land
Placemental mammals evolved a ___________ which allows them to develop a fertilized egg into a fully formed animal
Uterus
After fertilization the embryo attaches to the uterus and produces the ________ which will transfer the nutrients gained from the mother to the fetus
Placenta
The Maxium ________ ________ represents the biological limit of a species.
Life Span
What is the Maximum life span and give 4 examples of how it differs between species
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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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What factors determine the life expectancy and what has contributed to the increase in longevity
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What are the three types of mammals? What are their different ways of giving birth
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Why are placental mammals so successful
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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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