Question

Plants take advantage of both of these unique characteristics of light: a. Its particle and energy characteristics b. Its particle and wave characteristics c. Its heat and intensity d. Its speed and particle characteristics

During the summer in Houston, I might be able to measure ___ food candles with my light meter outside at noon. Plants like oak trees and turfgrass require this level of light: a.500 b.50 c.10,000 d.1,000 e. 25

A plant placed in a room with green light would likely___ a. Not survive because photosynthesis would not occur b. Grow normally c. Adapt to the available light quality and grow d.Manufacture new pigments enabling the plant to absorb green light

Answer 1

Plants take up photon energy from the sunlight for the process of photosynthesis. These characteristics of the sunlight is also given by: a) Its particles and energy.

Foot candle is a measurement of light intensity that reaches a surface area from a source of light.. One 'fc' is defined as the light to saturate a one-foot square with one source of light. During summers, the light source, which is the sun, provides unobstructed light. Foot candle is measured by using photometry and the tool that is used to measure this photometric reading is a sensitive light meter. The measure of that intensity of light is equals: c) 10,000 fc.

Plants usually take up light between the wavelength between 400-700 nm. Green light comes within this range as it has a wavelength of 500-600nm. Usually green light is considered least efficient for photosynthesis. When plants are kept in green light, they reflect around 5-10% of the light but absorb the rest. The green light is absorbed by the carotenoid pigments present in the plants. Plants do go through photosynthesis in green light but their growth is reduced. The stems and leaves seem to grow shorter in green light than in red or blue right. So the answer would be: c) adapt to the available light quality and grow.