9.2 Overview of Photosynthesis

Which wavelength of light is the shortest and has the highest energy?

• blue

• green

• yellow

• red

Which wavelength of light has the longest wavelength and lowest amount of energy?

• blue

• green

• yellow

• red

Which wavelength of light is least used by plants?

• blue

• green

• yellow

• red

What is the principal pigment in plants?

• chlorophyll

• carotene

• xanthoid

• eumelanin

Plants are green because

• they absorb green wavelengths

• they reflect green wavelengths

• They use green wavelengths the most

• green light is necessary for photosynthesis

Plants turn in red, orange and yellow in the fall because

• chlorophyll loses its green color

• as temperatures drop chlorophyll breaks down leaving the other colors

• as temperatures drop chlorophyll changes to red, yellow, and orange

• lack of sunlight degrades the chlorophyll

What captures the light in the process of photosynthesis?

• pigments

• thylakoids

• stroma

• grana

Where does photosynthesis take place?

• chloroplasts

• mitochondria

• ribosomes

• cell wall

Which structure contains the chlorophyll?

• thylakoids

• grana

• stroma

Which structure is the fluid portion of chloroplasts?

• thylakoids

• grana

• stroma