Ecology ch7

The longer the wavelength, the more energy they carry.

• True

• False

Tropical plants and tropical seaweeds contain lower levels of alkaloid toxins compared to their temperate counterparts.

• True

• False

Dead leaves contain half as much nitrogen compared to live leaves.

• True

• False

Photosynthetic response curves examine photosynthetic rates and maximum irradiance.

• True

• False

Prokaryotic organisms are used for bioremediation such as converting organic sewage into CO₂ and water, but unfortunately they cannot breakdown such toxins as benzene or cyanide.

• True

• False

Which group of organisms contains the most trophic diversity?

• Plants

• Animals

• Prokaryotes

• Fungi

What organisms use inorganic sources of both carbon and energy to synthesize organic compounds?

• Photosynthesizers

• Chemosynthesizers

• Autotrophs

• Both photosynthesizers and chemosynthesizers

• All of these

During the light dependent portion of photosynthesis, the energy found in photons is converted/transferred to

• ATP.

• NADPH.

• PEP.

• both ATP and NADPH.

• ATP, NADPH, and PEP.

How are C₄ plants and CAM (crassulacean acid metabolism) plants similar?

• They both open their stomata at night.

• They both initially fix carbon into a four carbon molecule.

• They both use more water to fix carbon into an organic compound than C₃ plants.

• They both have bundle sheath cells.

• Both carbon fixation and PGA production occurs in mesophyll cells.

In order for terrestrial plants to undergo photosynthesis and produce a six carbon sugar, which of the following metabolic pathways must occur?

• C₃

• C₄

• CAM (crassulacean acid metabolism)

• Both C₃ and C₄

• Both C₄ and CAM (crassulacean acid metabolism)