Plants in Your Life

Light

Approximately what percent of sunlight is converted into chemical energy during photosynthesis?

How far has light hitting Earth travelled from the sun?

Match the carotenoids to the plant they found in

Light is critical to which processes in plants?

Phytochromes, photoreceptors in plants, are sensitive to light in which regions of the visible spectrum?

chemical

The kinetic energy from sunlight is converted into __ during photosynthesis.

phenology

What is the term for the study of periodic events in biological life cycles, and how these are influenced by seasonal and interannual variations in climate, as well as habitat factors?

blue

green

Place red, green and blue in order of wavelength from shortest to longest.

Of red, green and blue which has the shortest wavelength, greater frequency, and therefore the greatest energy?

pigment

What is the name of the molecule found in the chloroplasts of plant cells which can harvest light?

380-750

According to NASA the human eye can detect light in what approximate range (in nanometres)?

Chlorophylls

carotenoids

What are the two major classes of photosynthetic pigments found in plants and algae? (hint: both plural)

Heat

Many carotenoids that reside in the thylakoid membrane absorb potentially damaging excess energy, and dissipiate it in the form of __ energy.

Plants in Your Life: #1 Light