Plant Science 6.3 Vocab

A substance present in all green plants; it evidences itself as the green coloring in leaves. This substance transforms light energy from the sun into chemical energy for the manufacture of plant food from carbon dioxide, water, and essential soil minerals.

• Chlorophyll

• Cholroplast

• Photosynthesis

• Phototropism

A technique for identifying the components of chemical mixtures separated by preferential adsorption on an adsorbent medium.

• Light

• Chromatography

• Spectrum

• Spectrometer

A plant in which the flowering period or some other process is not influenced by the length of daily exposure to light.

• Short-day plant

• Long-day plant

• Day-neutral plant

A growth of shoots and roots of plants in response to the stimulus of gravity that is positive when the growth curvature is toward the center of the earth (as plant roots) or negative when the direction of growth is opposite to the pull of gravity (as plant shoots).

• Photoperiodism

• Phototropism

• Tropism

• Geotropism

The form of radiant energy consisting of wavelengths seen with the human eye.

• Light

• Xray

• Gamma

• Ultra-violet

A plant in which the flowering period or some other process is accelerated by a relatively long, daily exposure to light.

• Short-day plant

• Long-day plant

• Day-neutral plant

Length of the light period in a day.

• Photoperiod

• Photoperiodism

• Photosynthesis

• Phototropism

The reaction of plants to periods of daily exposure to light, which is generally expressed in the formation of blossoms, tubers, fleshy roots, runners, etc

• Photoperiod

• Photoperiodism

• Photosynthesis

• Phototropism

Process by which green plants, using chlorophyll and the energy of sunlight, produce carbohydrates from water and carbon dioxide, and release water.

 

• Photoperiod

• Photoperiodism

• Photosynthesis

• Phototropism

The response of a plant to the stimulus of sunlight in which the plant or its parts seem to turn to face the light. The parts of the plant receiving the direct rays grow more slowly, and the plant appears to turn.

• Photoperiodism

• Tropism

• Geotropism

• Phototropism