Plant structure &development
Terms
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- shoots
- The aerial portion of a plant body, consisting of stems, leaves, and flowers
- monocots
- subdivision of flowering plants whose members possess one embryonic seed leaf, or cotyledon e.g. corn, grass
- vascular cambium
- A continuous cylinder of meristematic cells surrounding the xylem and pith that produces secondary xylem and phloem
- cork cambium
- A cylinder of meristematic tissue in plants that produces cork cells to replace the epidermis during secondary growth
- double fertilization
- A mechanism of fertilization in angiosperms, in which two sperm cells unite with two cells in the embryo sac to form the zygote and endosperm
- epidermis
- dermal tissue system in plants
- water-conducting
- Composed of tracheids and vessel elements, these both have rigid, lignin-containing secondary cell walls
- fruit
- mature ovary of a flower that protects dormant seeds and aids in their dispersal
- ground tissue
- system made up of tissues of mostly parenchyma cells that makes up the bulk of a young plant and fills the space between the dermal and vascular tissue systems
- heartwood
- Located in the center portion of a tree trunk, it consists of older layers of secondary xylem
- sclerenchyma
- A rigid, supportive plant cell type usually lacking protoplasts and possessing thick secondary walls strengthened by lignin at maturity
- apical meristem
- Embryonic plant tissue in the tips of roots and in the buds of shoots that supplies cells for the plant to grow in length
- parenchyma
- A relatively unspecialized plant cell type that carries most of the metabolism, synthesizes and stores organic products, and develops into a more differentiated cell type
- food-conducting
- Have thin primary walls and no secondary walls, and they remain alive at maturity. Also known as sieve-tube members
- sapwood
- The lighter colored portion of a log that consists of younger secondary xylem that actually conducts water
- roots
- The subterranean portion of a plant body, consisting of root branches and root hairs
- dicots
- A subdivision of flowering plants whose members possess two embryonic seed leaves, or cotyledons e.g. roses, apples, petunias
- collenchyma
- A flexible plant cell type that occurs in strands or cylinders that support young parts of the plant without restraining growth
- lateral meristems
- Cylinder-shaped corers of plant tissue that remain embryonic as long as the plant lives, allowing for indeterminate growth
- angiosperms
- A flowering plant, which forms seeds inside a protective chamber called an ovary