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Definitions (585)

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amniotic egg


n. An egg that can be laid on land due to the presence of a fluid-filled amniotic sac (amnion) that cushions and protects the developing embryo. amniote - n. Any of a group of land-dwelling vertebrates that have an amnion during embryonic development, including reptiles, birds, and mammals. Most extant mammals give live birth, the egg being retaine [..]
Source: ucmp.berkeley.edu

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heterosporangiate


Producing two different kinds of sporangia, specifically microsporangia and megasporangia. Compare with heterosporous.
Source: ucmp.berkeley.edu

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plankton


n. Very small, free-floating organisms of the ocean or other aquatic systems, including phytoplankton, which produce their own nutrients through photosynthesis, or zooplankton, which get their nutrients from organisms.
Source: ucmp.berkeley.edu

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exoskeleton


n. An external, often hard, covering or integument that provides support and protection to the body.
Source: ucmp.berkeley.edu

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tepal


When the sepals and petals of a flower are indistinguishable, they are referred to as tepals. Tepals are common in many groups of monocots. More info?
Source: ucmp.berkeley.edu

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mantle


That portion of the interior of the Earth that lies between the crust and the core.
Source: ucmp.berkeley.edu

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polyphyletic


Term applied to a group of organisms which does not include the most recent common ancestor of those organisms; the ancestor does not possess the character shared by members of the group. More?
Source: ucmp.berkeley.edu

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archipelago


n. A group of islands; an expanse of water with scattered islands.
Source: ucmp.berkeley.edu

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caldera


n. A large circular volcanic depression, often originating due to collapse.
Source: ucmp.berkeley.edu

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capsid


The protein "shell" of a free virus particle.
Source: ucmp.berkeley.edu


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