UNIT 3. Plants

Question	Answer
Abaxial surface	The underside of a leaf.
Adaxial surface	The upper side of a leaf.
Blade	The flat part of a leaf.
Cauloid	The stem-like part of a moss that provides support.
Conducting vessels	Tube-shaped channels that run through the root,the stem, the branches and the leaves of plants and circulate water and other substances.
Fronds	Large and very divided leaves found on ferns.
Gametangia	Reproductive structures that produce gametes.
Leaves	The organs of plants in which photosynthesis and gas exchange take place.
Petiole	The stalk that joins a leaf to a stem.
Phylloids	Small leaf-like structures that are found on mosses and lack protective tissues.
Rhizoids	Filaments that anchor mosses to the ground.
Rhizome	An underground stem.
Root	The part of a plant that anchors it to the ground.
Root hairs	Structures on roots that absorb water and mineral salts from the soil.
Sori	Small clusters on the underside of fronds in which spores are produced.
Stem	The part of a plant that supports it above ground.
Fruit	The seed-containing part of a plant that the pistil develops into after the ovule has been fertilised.
Hermaphroditic flowers	Flowers in which both the male and female reproductive systems are located in the same flower.
Inflorescence	A group of hermaphroditic flowers that grow from the same stem.
Ovary	The part of the pistil containing the ovules.
Ovule	A female reproductive cell of a plant, which a male cell fertilises to produce an embryo.
Petiole	The stalk that joins a leaf to a stem.
Pistil	The female, ovule-producing part of a flower.
Pollen	Grains that are located inside a flower’s stamen and contain the male cells.
Stamen	The male, pollen-producing part of a flower.
Stigma	The part of a pistil that receives the pollen.

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	Created by Maria Jose Mula Portales about 4 years ago