Plant Anatomy and Physiology Flashcards
The Plant Kingdom
multicellular organisms
photosynthetic
cell walls composed of cellulose
green pigment chlorophyll
Mosses
No vascular tissues
Ferns
No seeds; reproduce through spores
Seed Plants
Divided into: Flowering (Angiosperms) and Non-Flowering (Gymnosperms)
Angiosperms (Flowering)
Have seeds and bear flowers
Seeds are coated and undergo double fertilization
Categorized into: Monocot and Dicot
Gymnosperms (Non-flowering)
Have seeds but no flowers
Seeds are “naked”
Monocot
1 cotyledon
Dicot
2 cotyledon
Cotyledon
Primary leaf of the plant’s embryo
PLANT CELLS
Types:
Parenchyma Cells
Collenchyma Cells
Sclerenchyma Cells
Parenchyma Cells
Thin primary walls and retain protoplasm at maturity
Ex. cells in the leaves for photosynthesis; cells in the roots, stem storage
Collenchyma Cells
Thick primary walls and retain protoplasm at maturity
Function as support and located along side actively dividing cells
Ex. Cells responsible for “strength” of celery stalk
Sclerenchyma Cells
Cells with lignified secondary walls and lose their protoplasm at maturity
Ex. Xylem tissue fibers
PLANT TISSUES
Types: Dermal Tissue (protection) Vascular Tissue (transportation) Ground Tissue (support, storage, photosynthesis) Meristematic Tissue (growth and elongation)
Dermal Tissue
outer covering
Functions: Protection, Water Loss Prevention, CO2 Adsorption
Types: Trichomes, Cuticle, Stomata, Guard Cell
Trichomes
hair like protection
Cuticle
thin layer that prevents water loss
Stomata
Entrance of CO2
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Guard Cell
Regulates the opening and closing of stomata
closing: hot days to prevent water loss