Photosynthesis and Light Absorption

The video tutorial explores the absorption and action spectrums of photosynthesis, explaining why plants appear green due to the reflection of green light and absorption of other colors. It introduces a hypothetical scenario with blue plants, discussing the absorption of red and green light. The tutorial differentiates between action and absorption spectrums, highlighting the role of chlorophyll and accessory pigments like carotene in photosynthesis. It also examines photosynthesis in kelp, noting the involvement of various pigments in light absorption.

What is the hypothetical name given to the photosynthetic molecule on the fictional planet?

• Zanophyll

• Borophyll

• Chlorophyll

• Xenophyll

What happens to the energy from red and green light on the fictional planet?

• It is emitted.

• It is absorbed.

• It is reflected.

• It is scattered.

What is the primary reason plants appear green?

• They emit green light.

• They reflect green light.

• They do not interact with green light.

• They absorb green light.

In the action spectrum of photosynthesis, which color of light is most effectively used?

• Green

• Yellow

• Blue

• Purple

What is the significance of the action spectrum in photosynthesis?

• It shows the colors reflected by plants.

• It indicates when photosynthesis occurs.

• It measures the temperature of photosynthesis.

• It identifies the pigments involved.

Which pigment is primarily responsible for absorbing light in photosynthesis?

• Chlorophyll

• Anthocyanin

• Carotene

• Xanthophyll

Why is there still some photosynthesis in green light despite chlorophyll's low absorption?

• Green light is not needed.

• Chlorophyll changes its absorption.

• Accessory pigments absorb it.

• Green light is more intense.

Which color of light is least absorbed by chlorophyll?

• Yellow

• Red

• Blue

• Green

Which accessory pigment is NOT mentioned in the context of kelp?

• Anthocyanin

• Fuko Zang

• Zenil

• Carotene

What color is algae likely to appear based on its absorption spectrum?

• Dark green

• Red

• Bright green

• Yellow