Understanding Plants and Their Importance

What is a defining characteristic of all plants?

• They can move from place to place.

• They perform photosynthesis.

• They have a nervous system.

• They produce milk.

Which of the following is NOT a requirement for plant survival?

• Sunlight

• Carbon dioxide

• Oxygen

• Nitrogen

How do plants primarily obtain energy?

• By consuming other organisms

• Through photosynthesis

• By absorbing nutrients from the soil

• Through respiration

Which part of the plant is mainly responsible for absorbing water and nutrients from the soil?

• Leaves

• Stem

• Roots

• Flowers

What gas do plants release as a byproduct of photosynthesis?

• Carbon dioxide

• Oxygen

• Nitrogen

• Methane

Which of the following best describes the role of chlorophyll in plants?

• It absorbs sunlight for photosynthesis.

• It transports water throughout the plant.

• It stores energy in the form of starch.

• It protects the plant from herbivores.

How do plants contribute to the water cycle?

• By absorbing water from the atmosphere

• By releasing water vapor through transpiration

• By storing water in their leaves

• By converting water into oxygen

What is the primary function of a plant's leaves?

• To anchor the plant in the soil

• To absorb water and nutrients

• To conduct photosynthesis

• To store food

Which of the following is a benefit of plants to life on Earth?

• They decrease atmospheric oxygen levels.

• They provide habitat and food for many organisms.

• They increase soil erosion.

• They reduce biodiversity.

What is the process by which plants convert light energy into chemical energy?

• Respiration

• Transpiration

• Photosynthesis

• Fermentation