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23 Cards in this Set
- Front
- Back
Which if the following can develop into an adult organism by mitosis in the absence of fertilization? |
Spore |
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These cells have a fortified secondary wall of lignin and small end pores. They are found in vascular plants. |
Tracheids |
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The Earth was overall green for the first time during the _____________ interval of the plant fossil record. |
Gymnosperm |
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Microscopic, fiter feeding, sponges represent some of the earliest organisms dating to the Cambrian explosion (570 MYA). These microfossils represent the ____________ interval of the fossil record. |
Doushantuo |
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The __________________ states that common organisms that persisted for a long period of time are more likely to become fossilized than organisms that do not meet this criteria. |
abundance bias |
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Nodules on some plants and most soil environments house bacteria that play a critical role in the global ______________ cycle. |
Nitrogen |
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Life during this ers consisted mostly of unicellular organisms. |
Precambrian |
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The process of acquiring new generic material through the absorption of environmental DNA is referred to as ______________. |
transformation |
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Feeding by engulfmebt first evolved in the ______________. |
Protists |
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This structure is equivalent to the ovaries of an animal. |
Archegonia |
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Scientists may be able to use _______________ to deliver drugs directly to cancerous tumors because ________________.
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magnetotactic bacteria; they have a natural affinity for low oxygen environments associated with tumors.
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The using of biological agents to neutralize or remove contaminants from polluted water and soil environments is called ___________________.
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Bioremediation
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These protists continue to wreak havoc on our species, causing deaths of thousands per day.
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Plasmodium
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An organism dies and is buried rapidly. However, it decomposes so slowly that dissolved ions solidify within the body as decomposition finishes. What fossil type is being described?
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Permineralized
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These cells have a fortified secondary wall of lignin and large end gaps. They are found in all Angiosperms.
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Vessel Elements
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One scientific hypothesis holds that the _____________ resulted from a gradual in-folding of the plasma membrane.
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Nuclear Envelope
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The reproductive structure used by non-seed plants to produce sperm is properly called the _________________.
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Antheridia (Antheridium)
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Prokaryotes associated with tube worm colonies growing on hydrothermal vents on the ocean floor are examples of __________________.
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Extremophiles |
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_______________ fossils provide direct evidence of an organism's life history, but not direct evidence of the organisms itself.
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Trace
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When studying ancestor-descendant relationships, the ____________ relies primarily on synapomorphies to determine overall similarity between organisms.
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Cladistics Approach
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Bacteria causing this disease can exist in a body for years, even decades, before symptoms show externally. In advance stages, a victim may lose limbs and facial features to disfigurement. The organism being described is _____________________.
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Mycobacterium leprae
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Which of the following has been proposed as a possible solution to climate change?
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fertilizing plankton-heavy ocean environments with iron.
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