MT 4: Photosynthesis Practice

Green plants appear green to humans because

• green is the only wavelength of light absorbed by plants the rest are reflected

• mainly red and blue wavelengths are absorbed while green is reflected

• plants absorb only high energy wavelengths of xrays

• humans eyes can respond to only to photons with low energy

The colors of the leaves change in the fall because

• The chlorophyll changes color in the cooler weather

• The chlorophylls are destroyed, allowing the accessory pigments to show

• The chlorophyll changes the wavelengths of light is absorbs and reflects

• The carotenoids multiply and overwhelm the chlorophylls in cooler weather

_______ is the veins in plants that carries sugar down and all around the plant, while __________ are the tubes that allow water to flow in one direction from the roots to the leaves.

• Xylem, Phloem

• Phloem, Xylem

• Roots, Stems

• Stems, Roots

Which of the following organisms is NOT capable of photosynthesis?

• Plants

• Algae

• Animals

• Some bacteria

Tags

NGSS.MS-LS1-6

The ultimate source of energy for all living things on Earth is:

• the sun

• the moon

• nuclear fusion

• Volcanos

Tags

NGSS.MS-LS1-6

The overall net equation for photosynthesis is:

• C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + light energy

• 6 CO2 + 6 H2O + light energy → C6H12O6 + 6 O2

• 6 CO2 + C6H12O6 + light energy → 6 H2O + 6 O2

• 6 O2 + 6 CO2 + light energy → 6 H2O + C6H12O6

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following is NOT a factor that affects the rate of photosynthesis?

• Amount of water

• Amount of carbon dioxide

• Amount of light

• Amount of oxygen

Tags

NGSS.MS-LS1-6

The source of oxygen produced during photosynthesis comes from:

• Carbon dioxide

• Water

• Air

• Glucose

Tags

NGSS.MS-LS1-6

What happens when a chlorophyll molecule absorbs a photon of light?

• Its electrons get excited and move to a higher energy level.

• It disintegrates, giving off huge amounts of heat.

• It glows, radiating green light and giving the plant a green appearance.

• Red and blue wavelengths are reflected.

Tags

NGSS.MS-LS1-6

The high energy electrons in the light reactions get passed down until it finally gets to:

• Glucose

• Oxygen

• NADPH

• ATP

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7