Understanding Plant Colors and Photosynthesis

Understanding Plant Colors and Photosynthesis

Assessment

Interactive Video

Biology, Science

7th - 12th Grade

Hard

Created by

Amelia Wright

FREE Resource

The video explores why plants are predominantly green, focusing on the role of chlorophyll in photosynthesis. It discusses the paradox of plants reflecting green light, despite it being abundant in sunlight. A study by UC Riverside suggests that plants absorb light that fluctuates less to protect against energy surges and drops. Simulations show that plants balance energy absorption across different wavelengths to stabilize their energy intake. Evolution has fine-tuned plants to absorb optimal wavelengths, making green the ideal color for photosynthesis, while some bacteria in dense forests are purple.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary pigment responsible for the green color in plants?

Anthocyanin

Xanthophyll

Chlorophyll

Carotene

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it surprising that plants are green?

Green light is the most absorbed by plants.

Green is the least abundant color in sunlight.

Green light is harmful to plants.

Green is a color that plants reflect the most.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is one hypothesis for why plants reflect green light?

To increase photosynthesis efficiency

To protect against fluctuating sunlight

To attract pollinators

To conserve water

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do plants manage the variability in sunlight?

By absorbing only blue light

By averaging energy from different wavelengths

By reflecting all light

By absorbing only red light

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens if the difference between absorbed wavelengths is too large?

The plant becomes black

The molecular network fails to even out noise

The plant absorbs too much energy

The plant reflects all light

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What did the research simulation reveal about optimal light absorption?

A balanced difference between wavelengths is optimal

A large difference between wavelengths is ideal

A small difference between wavelengths is ideal

Absorbing all wavelengths is best

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What color is predicted to be optimal for photosynthesizing lifeforms under dense canopies?

Red

Purple

Yellow

Green

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