Q2: Review Unit 2

1. Which part of a rose or bougainvillea helps protect the plant from animals?

• A. Roots

• B. Stems

• C. Thorns

• D. Flowers

2. What is the main purpose of photosynthesis in plants?

• A. To help plants absorb water

• B. To produce food for the plant

• C. To make the plant grow taller

• D. To spread seeds

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3. In which order do the stages of a rice plant's life cycle occur?

• A. Germination, flowering, tillering, maturity, panicle formation

• B. Germination, maturity, tillering, panicle formation, flowering

• C. Germination, panicle formation, tillering, flowering, maturity

• D. Germination, tillering, panicle formation, flowering, maturity

4. What best describes a taproot in plants?

• A. A single thick root that grows deep into the soil

• B. Many thin roots spreading out from the base of the plant

• C. A root that grows above the ground

• D. Small roots that store water for the plant

5. Which of the following is an example of a plant with fibrous roots?

• A. Carrot

• B. Mango

• C. Grass

• D. Rose

6. Which of the following best describes an omnivore?

• A. . An animal that only eats plants

• B. An animal that only eats meat

• C. An animal that eats both plants and animals

• D. An animal that only drinks water

7. 7. What role does a decomposer play in an ecosystem?

• A. It produces food for plants

• B. It breaks down dead plants and animals

• C. It creates water for animals

• D. It stops nutrients from being recycled

Tags

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8. 8. Which of the following is an example of a producer in a food chain?

• A. Grass

• B. A wolf

• C. A rabbit

• D. A fox

Tags

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9. If a snake is removed from its habitat, how might this affect the food chain?

• A. The food chain will stay balanced

• B. More water will be available for other animals
  C. The plants in the area will grow faster

• C. The plants in the area will grow faster

• D. Animals that snakes eat might increase in number

Tags

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10. Which of the following has the least energy in a food chain involving corn, a rat, and a snake?

• A. Corn

• B. Rat

• C. Snake

• D. Both the rat and snake

Tags

NGSS.MS-LS2-3