Light and Plant Growth
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These flashcards cover key concepts related to light and plant growth, focusing on the effects of light duration, quantity, quality, and the biological processes of plants.
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21 Terms
Light Duration
The number of continuous hours of light in a 24-hour period.
Light Quantity
The number of light particles (photons) of different wavelengths that are capable of performing photosynthesis.
Light Quality
The spectral distribution of light emitted from a light source.
Photosynthesis
The process by which plants convert light energy into chemical energy, producing glucose and oxygen.
Auxin
A plant hormone produced in stem tips that aids in organ development and cell elongation.
Light Compensation Point
The rate of photosynthesis equals the rate of respiration.
Light Saturation Point
The amount of light beyond which no added benefit (growth) is obtained.
Phototropism
The growth response of a plant to light direction.
Etiolation
A growth response where a plant grows in partial or full absence of light.
Blanching
A growing technique to exclude light, commonly used for plants like asparagus.
Photoperiodism
A plant growth response influenced by the duration of light and darkness in a 24-hour day.
Long Day Plants (LDP)
Plants that flower when the day length is longer.
Short Day Plants (SDP)
Plants that flower when the day length is shorter.
Day Neutral Plants (NDP)
Plants that flower irrespective of day or night length.
Chlorophyll
The green pigment found in plants that is crucial for photosynthesis.
Carotene
Orange pigment in plants, contributing to fall color.
Anthocyanin
Pigment responsible for red coloration in plants under certain conditions.
Ginkgo biloba
A tree species known for its distinctive fan-shaped leaves and vibrant fall color.
Amsonia hubrectii
A perennial plant known for its blue flowers and striking fall foliage.
Abscission Layer
The layer of cells responsible for leaf drop in deciduous plants.
Chloroplasts
Organelles in plant cells where photosynthesis takes place.
