Understanding Photosynthesis and Plant Classification

What are the essential elements required for photosynthesis?

• Sunlight, oxygen, and water

• Sunlight, nitrogen, and water

• Sunlight, carbon dioxide, and water

• Oxygen, carbon dioxide, and minerals

What is the role of chlorophyll in photosynthesis?

• It absorbs water from the soil

• It gives plants their green color and is essential for photosynthesis

• It transports minerals to the leaves

• It stores food in the roots

How do plants contribute to the food chain?

• By decomposing organic matter

• By absorbing carbon dioxide

• By providing shelter for animals

• By producing oxygen and serving as food for herbivores

What happens to plants at night in terms of gas exchange?

• They release oxygen and absorb carbon dioxide

• They only release oxygen

• They absorb oxygen and release carbon dioxide

• They stop all gas exchange

What is a unique characteristic of plants compared to animals?

• They can move from place to place

• They do not need sunlight to survive

• They make their own food through photosynthesis

• They depend on other living creatures for food

Which group of plants does not have roots, stems, or leaves?

• Mosses

• Ferns

• Algae

• Phanerogams

Which type of plants are known for living in very humid and bleak places?

• Mosses

• Algae

• Ferns

• Phanerogams

What is the main way ferns differ from mosses?

• Ferns do not need sunlight

• Ferns have roots, stems, and leaves

• Ferns have flowers

• Ferns live in water

Which group of plants reproduces through flowers?

• Phanerogams

• Algae

• Ferns

• Mosses

What is the predominant color of plants and what causes it?

• Yellow, due to carotenoids

• Green, due to chlorophyll

• Blue, due to flavonoids

• Red, due to anthocyanins