Science- Living Organisms

Which statement most likely explains why these aquatic plants are almost always found in shallow water?

• The plant cannot make seeds to reproduce in water deeper than six feet.

• The leaves of the plant cannot reach the surface to receive sunlight in water deeper than six feet.

• The current is too strong in water deeper than six feet for the plant leaves to float at the surface.

• The plant stems will have a higher rate of attack by fish and other predators in water deeper than six feet.

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Photosynthesis is used to produce food for plants in the form of glucose. In the process, oxygen is released. As shown in the diagram, plants require water and carbon dioxide (from the air). What else is required for photosynthesis and what role does it play?

• Light is required to provide energy for photosynthesis.

• ATP is required as an energy source for photosynthesis.

• Glucose is required as an energy source for photosynthesis

• Oxygen is required to split water molecules in photosynthesis.

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How do plants use chlorophyll in photosynthesis?

• Chlorophyll absorbs sunlight energy for photosynthesis.

• Chlorophyll stores carbon dioxide for photosynthesis.

• Chlorophyll stores glucose made in photosynthesis.

• Chlorophyll stores oxygen made in photosynthesis.

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Plants are called producers because they make their own food through the process of photosynthesis. Plants use carbon dioxide from the air and (a)   to convert solar energy into chemical energy called glucose.

• oxygen from the air

• energy from the air

• soil from the ground

• water from the ground

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What type of plants contain tubes that help transport water and nutrients into their other parts?

• vascular

• nonvascular

• photosynthetic

• transportive

Compare the life cycle of a flowering plant to the life cycle of a frog. What part of a plant is most like a frog's egg?

• A) flower

• B) roots

• C) seed

• D) stem

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Which answer correctly lists the stages of a butterfly's life cycle?

• larva, butterfly, chrysalis, egg

• chrysalis, egg, butterfly, larva

• butterfly, larva, egg, chrysalis

• egg, larva, chrysalis, butterfly

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What two animals go through complete metamorphosis?

• frog and plant

• plant and chicken

• frog and butterfly

• butterfly and chicken

In the prairie ecosystem, which is an example of a producer?

• air

• butterfly

• sunflower

• water

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What is an important role plants play in helping maintain ecosystems?

• They protect soil from the Sun's harmful rays.

• They help remove pollutants from water sources.

• They provide shade for small organisms like insects.

• They help the cycle of oxygen for other living things.

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