energy flow

In photosynthesis, plants convert what type of energy into what other type of energy?

• light---> mechanical

• radiant--->chemical

• chemical--->heat

• mechanical--->light

The energy plants gain through photosynthesis is stored in--

• oxygen

• nitrogen

• carbon dioxide

• glucose

A test tube is filled with water and a green. When the plant is exposed to sunlight, it begins to produce bubbles. Which of the following is the most likely conclusion for the identity of the gas in the bubbles?

• carbon dioxide

• oxygen

• nitrogen

• hydrogen

The diagram provided illustrates the process of photosynthesis, including the substances used and produced by plants. What is the identity of the chemical represented by the ? in the diagram?

• hydrogen

• carbon

• glucose

• nitrogen

Three Anacharis plants were placed inside inverted test tubes filled with water. One test

tube was exposed to low light, another to medium light while another was exposed to high

light. The table provided shows the results of this experiment. Notice that more oxygen

was produced by the Anacharis in high light.

Based on the information provided, what is the difference in volume (in mL) of oxygen

produced between the low light and high light plants after 45 minutes?

• 1.1

• 1.3

• 0

• 2.5

Which of the following provides the energy needed for photosynthesis?

• water

• the sun

• plants

• atoms

Carbon dioxide enters the leaves of plants and is used by the plant during photosynthesis to make--

• nitrogen

• hydrogen

• glucose

• water

Which of the following characteristics is shared by both primary and secondary consumers?

• uses the sun's radiant energy to produce food

• the first step in any food chain diagram

• eats only plants to gain needed energy

• gains energy by eating other living things

At which level of the energy pyramid would most of the biomass (the total mass of organisms in a given area) be found?

• top predator

• carnivore

• herbivore

• producer

Which of the organisms in the food chain transforms energy from the sun into food?

• large sharks

• marlin

• shrimp

• phytoplankton