Horticulture Semester Review Part 2

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Anther

a sac-like structure at the top of the stamen that contains pollen

Apical Meristem

Primary growth area in stems.

Cellular respiration

chemical reaction in which stored food energy is made available for plants and animals

Chloroplast

An organelle found in plant and algae cells where photosynthesis occurs.

Fertilization

the joining of a sperm cell and an egg cell

Filament

the thin stalk that holds up the anther

Flower

the reproductive organs of a plant

Fruit

the reprodicutive body of a seed plant consisting of one or more seeds and usually various protective and supporting structures

Leaf

an outgrowth from a plant that constitutes part of the foliage and functions primarily in food manufacture by photosynthesis

Ovary

the lower part of the pistil that contains one or more ovules or the part in which the eggs are produced and seeds develop

Petal

leaf-like strucutres located inside the sepals that are often colorful

Photosynthesis

the manufacture of food by green plants in which carbon dioxide and water are combined in the presence of light and chlorophyll to form sugar and oxygen

Pistil

the female reproductive parts of the flower

Pollination

the transfer of pollen from the anther to the stigma of the flower

Root

the lower portion of a plant that bears neither leaves nor reproductive organs and that mostly develops underground and anchors the plant, the hairs absorb water and mineral nutrients

Sepal

green leaf-like structure on the exterior of a flower

Stamen

the male reproductive parts of a flower

Stem

stalk, trunk, or branch of a plant; can be vertical or horizontal

Stigma

structure found at the top end of the pistil that contains a sticky surface on which pollen can be caught

Stomata

the pores or openings in the epidermis of a leaf that allow the exchange of oxygen, carbon dioxide, and water vapor

Style

the tube in the pistil that leads fromthe stigma to the ovary and through which pollen reaches the ova and egg

Transpiration

the water loss from plant tissues

Clay

fine-grained soil; smallest soil particle

Complete fertilizer

contains all three of the primary fertilizer nutrients (nitrogen, phosphorus, and potassium)

Fertilizer

any material used to provide nutrients that plants need

Growth regulators

hormones and synthetic chemicals that inhibit or modify plant growth and development

Hormones

chemical messenger substance that affects plant growth

Nitrogen

odorless, colorless nutrient needed for plant gowth

Nurtrient

a chemical element required for plant growth

Organic matter

decayed remains of plants and animals

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