Energy Flow

The main source of energy for all life comes from ____.

• the Earth
• the moon
• the sun
• the food we eat/make

Most plants appear green because chlorophyll

• absorbs green light.
• absorbs violet light.
• reflects green light.
• does not absorb violet light.

A student is collecting the gas given off from a plant in bright sunlight at a temperature of 27°C. The gas being collected is probably ________.

• oxygen
• carbon dioxide
• ATP
• glucose

If carbon dioxide is completely removed from a plant’s environment, what would you expect to happen to the plant’s production of high-energy sugars (rate of photosynthesis)?

• Sugar production will likely increase.
• Sugars will not be produced.
• The rate of sugar production will decrease .
• Fewer sugars will be produced at first, but then the plant will recover.

The raw materials or reactants of photosynthesis are

• sugar and water.
• sugar and oxygen.
• carbon dioxide and water.
• carbon dioxide and oxygen.

Which statement about photosynthesis is correct?

• Plants get the energy they need for photosynthesis from water.
• Plants get the energy they need for photosynthesis from soil.
• Plants get the energy they need for photosynthesis from sunlight.
• Plants do not require energy to perform photosynthesis.

What are the products of photosynthesis?

• Carbon dioxide and water
• Carbon dioxide and oxygen
• Glucose and oxygen
• Glucose and water

What molecule absorbs sunlight for photosynthesis?

• chloroplast
• thylakoid
• grana
• chlorophyll

Autotroph or heterotroph?

• Autotroph
• Heterotroph

Autotroph or Heterotroph?

• Autotroph
• Heterotroph