Midterm 1 Flashcards
Variety
species with stable mutations passed on to progeny;
write var. between species name and variety name in binomial nomenclature
Cultivar
(cultivated variety) species with mutations caused by human intervention;
write cv. at the end
Clones
Plants derived asexually from one individual (start from cutting/ vegetation);
Reproduced to maintain plant characteristics
Lines
Sexually reproduced cultivar (start from seed)
Inbred: self-pollinate
Hybrid: cross of two inbred lines
Lines
Sexually reproduced cultivar (start from seed);
Inbred: self-pollinate
Hybrid: cross of two inbred lines
Xylem
dead at maturity and transports water essentially through a hollow tube;
eventually the xylem becomes full of sap and is no longer used for water transport, then functions in support and forms wood;
embedded within the ground tissue system
vascular tissue
Phloem
sieve tube elements because of the sieve like plates at the end of the cells - they are alive at maturity but are crushed as the plant grows in diameter and must be continually replaced; transport material (sugars, nutrients)
Transpiration
The giving off of water vapor through the stomata
Meristematic Tissue
site of growth in plant; origin of the other tissue type
Apical Meristems
site of primary growth
Lateral Meristems
site of secondary growth
Dermal tissue system
the outer protective covering of the plant
Vascular tissue system
comprises the xylem and phloem - it is embedded within the ground tissue system – xylem forms wood in woody plants
Ground tissue system
the inner supportive tissues of the plant – pith in herbaceous plants
Angiosperm
Angiosperm Covered seed Flowering plants Fruit Seasonal Flat leaves Hard Wood Largest group of plants (divided into monocots and dicots)
Gymnosperm
Gymnosperm Naked seed Seed-producing plants Evergreen Scalelike needles Soft Wood Cones