science flash cards

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root cap

cone-shaped portion of a root tip that is made from dead cells.

primary growth

growth of a root or stem in length

osmosis

continual movement of water from a solution of higher water content through a semipermeable membrane into a solution of lower water content

Secondary growth

growth of a root or a stem in diameter

taproot system

system in which the primary root grows straight down and is longer than the secondary root that branches out from it

fibrous root system

root system in which the primary root remains small and many slender secondary roots grows from it in all directions

vegetative reproduction

form of plant reproduction in which a new plant grows

semipermeable membrane

membrane that only certain molecules to pass through

Xylem

tissue that carries water and nutrients from a plants’s roots hairs to the leaves

Phloem

tissue that carries sugars from a plant’s leaves to the stem and root’s

Transpiration

evaporation of water from the leaves of a plant

Bryophyte

plant without a vascular system

Tracheophyte

plant with a vascular system

spore

one-celled reproductive structure used by a non seed plant fungus or sporozoan to reproduce asexually

Gymnosperm

non flowering seed plant that reproduces by seed’s formed in cones or cone -like structures

Rhizoid

any of a bryophyte’s tiny, hairy -like threads that absorb water and nutrients

Vine

any plant with long thin stem that grows along the ground or has tendrils that twine around a wall or other support