Plant Processes

What supplies the energy to the grasses so that the flow of energy can begin?

• decomposers
• respiration
• the sun
• water

Which of the following describes the major energy transformation taking place in photosynthesis

• Radiant energy is being converted into chemical energy
• Sound energy is being converted into potential energy
• Chemical energy is being converted into electrical energy
• Mechanical energy is being converted into kinetic energy

Which of the following flows through ecosystems in one direction?

• Carbon
• Nitrogen
• Energy
• Water

The diagram shows an energy pyramid. Which of the following statements is true of the owl?

• The owl is the source of energy for the energy pyramid.
• The owl gets energy from eating producers.
• The owl is not a consumer.
• The owl has less energy available.

The shape of an energy pyramid is related to the

• amount of energy available at each trophic level.
• number of organisms living in an ecosystem.
• weight of living material at each trophic level.
• diversity of organisms in an ecosystem.

In the transfer of energy from organism to organism in the pyramid, what energy is lost?

• Chemical
• Mechanical
• Heat
• None are true

What is wrong with the following illustration of how resources are used in an ecosystem? owl → mouse → seeds

• Mice do not eat seeds
• Seeds are part of plants and therefore are not part of an ecosytem
• The flow of energy must be shown in reverse
• The owl eats seed and not mice

What energy transformation takes place within the digestive system of the grasshopper?

• Radiant energy is transformed into chemical energy in the digestive system of the grasshopper
• Chemical energy is transformed into heat energy i n the digestive system of the grasshopper
• Heat energy is transformed into chemical energy in the digestive system of the grasshopper
• Chemical energy is transformed into radiant energy in the digestive system of the the grasshopper

Decaying plant & animal matter create biomass, the amount of decomposing organisms.  Which of the following helps decay & cycle the nutrients in a food chain?

• Decomposers - bacteria, fungus, & worms
• Consumers - Bats, Butterflies, & Birds
• Producers - Trees, Shrubs, & Grassess
• The Sun

What type of change occurs to the grass as it passes through the digestive system of the grasshopper when it breaks down starches into simple sugars?

• Physical Change
• Chemical Change
• Both are true
• None are true