Plant Growth and Development Flashcards
Non-vascular plants
Lack xylem and phloem, ex. moss
Seedless vascular plants
Reproduce with spores, found in moist environments, ex. ferns
Gymnosperms
Have non-coated seeds, ex. conifers
Angiosperms
Flowering plants with coated seeds
Monocots/monocotyledons definition and characteristics
Has a single cotelydon in seeds Petals in multiples of 3 Fibrous roots Scattered vasculature Parallel leaf veins No secondary growth
Dicots/dicotyledons definition and characteristics
Seeds contain 2 cotyledons. Petals in multiples of 4/5 Taproot Vasculature in ring Netted leaf veins Secondary growth
Epicotyl
Region above cotelydon
Hypocotyl
Region below cotyledon, above root axis
Pericarp
Seed coat
Endosperm
Provides nutrition for plant embryo
Seed definition
Embryo, endosperm, and coat
Embryo definition
Contains every part that isn’t endosperm or coat
Scutellum
Monocot cotyledon, specialized for absorbing endosperm (thinner, large surface area)
Cotyledon
Embryonic leaf
Embryonic shoot
Plumule
Embryonic root
Radicle
Monocot cotyledon
Scutellum
Structure that protects plumule
Coleoptile
Structure that protects radicle
Coleorhiza
Meristematic
Remains embryonic
The meristematic regions
RAM-Root Apical Meristem
SAM-Shoot Apical Meristem
Becomes the vascular tissue
Procambium
Becomes epidermis
Protoderm
Becomes ground tissue
Ground meristem
Dormancy
Seed in stasis, needs cues to grow
Seed banks
Seeds lying dormant in soil
Seedling order of development
Radicle emerges first
Shoot emerges and protects SAM
Type of growth in plants
Indeterminate growth
Clonal replicates of SAM
Axillary buds
Responsible for secondary growth
Lateral meristems
Found in monocots, for growth of stems and leaves
Intercalary meristem
Meristem Initials
Divide slowly and carefully
Meristem Derivatives
Divide faster
SAM Orginazation
Protoderm, ground meristem, procambium, ground meristem
Quiescent center
In RAM, slowly dividing initials