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Why are Charophtyes the link?
- Chloroplasts
- Homologous to land plants
- Analogous to algae
- Hint: know what these terms mean
- Similar morphology
- Live in transitional habitats between water and land
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What is homology
A similarity between two or more structures that is due to inheritance from a common ancestor
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What is analogy
A resemblance in function, often appearance as well, between two structures that is due to convergent evolution rather than common ancestry
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What is a root tip?
a thimble shaped mass of cells, produced by the root apical meristem, that protects the meristem; the organ that perceives the gravitational stimulus in root gravitropism
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What is Cohesive - Tension Transport?
a way to move water up a tree by using the characteristic of water that it sticks to its self
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What is Phenotypic plasticity?
The ability of plants to alter their structure to better collect resources
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What is an abscission zone?
The area where the leaf cuts its self off from the tree during winter time
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What is coevolution?
the influence of closely associated species on each other in their evolution; this allows for specialization of plants and their pollinators
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What is the gametangia?
A bryophyte innovation to protect the gametes.
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What is a sporophyte?
the asexual and usually diploid phase, producing spores from which the gametophytes arise.
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What is a cuticle?
the innovation that prevents plants from desiccation, ultraviolet radiation and fungal infection.
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What is a gammae?
Used for vegitative reproduction in liverworts and found in cups.
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What is a peristome?
part of capsule sensitivity to humidity; opens up to release spores.
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What are bryophytes?
the group that gave rise to tracheophytes
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what is lignin?
the tracheophyte innovation within the vascular tissue (xylem).
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What are microphylls?
this leaf type is typical in lychophytes but not monilophytes.
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What are ophioglossalean ferns?
the group that has two different leaf segments or types
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What are lycopsids and monilophytes?
this group dominated in the carboniferous.
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What is a seed coat?
a layer around the seed for protection found in gymnosperms.
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What is a pollen grain?
this structure allows for the independent movement of the microgamete to the megagamete across hostile conditions.
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What is a serotinous cone?
this type of cone is adapted to fire.
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What is aril?
this stucture of the taxaceae was adapted for seed dispersal.
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What is a Gnetophyte?
this group shares several characteristics with the angiosperm.
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What is cytokinin
The antagonist to auxin
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What is auxin?
responsible for stem elongation in response to light.
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What is abscissic acid?
plant growth regulator likely to be in high concentration during the dormancy of a seed.
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What is double fertilization?
Neccessary for the development of the embryo and nucleus.
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What is a megagametophyte?
the plant equivalent of an animal egg.
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What is the Casparian strip?
Major barrier to movement in roots.
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What is CAM?
- This is the main photosynthesis system in desert plants.
- Crassulacean acid metabolism
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What is a modified leaf?
this cup-like structure captures insects and dissolves them.
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What is a monocot?
This group typically has scattered vascular bundles.
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What is a periderm?
This protion of secondary growth is sloughed like a fingernail.
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