Evidence of Plant Growth Needs

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2nd Grade Science › Evidence of Plant Growth Needs

Questions 1 - 10
1

Use the evidence. What does the data show plants need to stay green?

Plants need only water. The plant with water was green even without sunlight.

Plants need music. Quiet plants grow better than loud plants.

Plants need sunlight. The plant with sunlight stayed green; the one without sunlight turned pale.

Plants need neither sunlight nor water. Both plants stayed healthy.

Explanation

This question tests skill 2-LS2-1: Using evidence from investigation observations to determine what plants need—sunlight and water—to grow. Scientists use EVIDENCE from investigations to answer questions. We observe what happened in different conditions, then COMPARE the results. If Plant with sunlight stayed green and Plant without sunlight turned pale, this EVIDENCE shows plants need sunlight. We look at the DATA—measurements, observations, health—and use it to decide what plants need. Our conclusion must match the evidence. The investigation tested sunlight needs for keeping plants green. RESULTS: The plant with sunlight stayed green and healthy. The plant without sunlight turned pale. Comparing these results shows plants need sunlight to stay green. The plant with sunlight did better, which is clear evidence. The correct answer is B because it correctly identifies that plants need sunlight AND uses evidence from the investigation. It references the observations—the plant with sunlight stayed green while the one without sunlight turned pale—and connects these observations to the conclusion. The answer shows: state what plants need + use evidence from data + explain connection. Choice A is incorrect because it claims plants need only water and ignores the evidence about sunlight's role in keeping leaves green. This error happens when students don't compare the plants properly or misread which factor was being tested. To help students use investigation evidence: Teach comparison process—(1) Look at plant with sunlight conditions and results, (2) Look at plant without sunlight conditions and results, (3) What's different about the plants? (4) What's different about results? (5) Connect: Plants with sunlight stayed green, so plants need sunlight. Use evidence sentence frames: 'Plants need sunlight. The evidence shows: The plant with sunlight stayed green. The plant without sunlight turned pale. This proves plants need sunlight.' Make T-chart: Conditions (sunlight/no sunlight) | Results (green/pale). Practice reading data tables—'Find the plant in sunlight. What color is it? Now find the plant without sunlight. Compare!' Emphasize: Our answer must MATCH the data, not what we think or hope. If data shows plant without sunlight turned pale, then plants need sunlight—the evidence tells us.

2

Use the evidence. Jamal says plants only need water. Is he correct?

Results after 11 days:

No. Plants need sunlight too. Plant A was green and tall; Plant B was weak and pale.

Yes. Plants need neither sunlight nor water. Both plants looked healthy.

Yes. Plant B had water and no sun, and it grew the most.

No. Plants only need a bigger pot. Pot size makes plants grow tall.

Explanation

This question assesses the skill 2-LS2-1: Using evidence from investigation observations to determine what plants need—sunlight and water—to grow. Scientists use evidence from investigations to answer questions by observing what happened in different conditions, then comparing the results; for example, if Plant A with both grew well and Plant B with only water was weak, this evidence shows plants need sunlight too, and we look at the data like measurements, observations, and health to decide what plants need, ensuring our conclusion matches the evidence. The investigation tested if only water is enough, with results showing Plant A had sunlight and water and was green and tall, while Plant B had water but no sun and was weak and pale, comparing these shows plants need sunlight too, as the plant with both did better, which is clear evidence. The correct answer is B because it correctly identifies that plants need sunlight too, not just water, and uses evidence from the investigation, referencing the observations like 'Plant A was green and tall; Plant B was weak and pale,' and connects these observations to the conclusion by showing what plants need plus evidence from data plus explanation of the connection. Choice A is incorrect because it says yes to only water but contradicts evidence, as Plant B with only water did not grow most; this error happens when students ignore comparisons or reverse results. To help students use investigation evidence, teach: (1) Look at claims, (2) Find evidence for/against, (3) Compare plants, (4) Conclude based on data. Use frames like 'No, because Plant A had sun and water and grew tall, Plant B had only water and was weak,' with T-charts, emphasizing matching evidence and watching for misreads.

3

Use the evidence. What do plants need to grow more leaves?​

Plants need both sunlight and water. The plant with both had 10 leaves; others had fewer.

Plants need to be touched. Touching leaves makes more leaves grow.

Plants need neither. All plants had the same number of leaves.

Plants need only water. The plant with water but no sun grew the most leaves.

Explanation

This question tests skill 2-LS2-1: Using evidence from investigation observations to determine what plants need—sunlight and water—to grow. Scientists use EVIDENCE from investigations to answer questions. We observe what happened in different conditions, then COMPARE the results. If Plant with both sunlight and water had 10 leaves while others had fewer, this EVIDENCE shows plants need both to grow more leaves. We look at the DATA—measurements, observations, health—and use it to decide what plants need. Our conclusion must match the evidence. The investigation tested what plants need to grow more leaves. RESULTS: The plant with both sunlight and water had 10 leaves. Plants lacking one or both needs had fewer leaves. Comparing these results shows plants need both sunlight and water to grow more leaves. The plant with both needs met grew the most leaves, which is clear evidence. The correct answer is B because it correctly identifies that plants need both sunlight and water AND uses evidence from the investigation. It references the observations—the plant with both had 10 leaves while others had fewer—and connects these observations to the conclusion. The answer shows: state what plants need + use evidence from data + explain connection. Choice A is incorrect because it claims plants need only water and that the plant with water but no sun grew the most leaves, which contradicts the evidence showing the plant with both needs had the most leaves. This error happens when students make partial conclusions or don't compare all the data properly. To help students use investigation evidence: Teach comparison process—(1) Look at plant with both needs leaf count, (2) Look at plants with only one need leaf count, (3) What's different about the plants? (4) What's different about results? (5) Connect: Plants with both sunlight and water had most leaves, so plants need both. Use evidence sentence frames: 'Plants need both sunlight and water. The evidence shows: The plant with both had 10 leaves. Plants without one or both had fewer leaves. This proves plants need both.' Make T-chart: Conditions (both/water only/sun only) | Results (10 leaves/fewer leaves). Practice reading data tables—'Find the plant with both needs. Count its leaves. Now find plants with only one need. Compare!' Emphasize: Our answer must MATCH the data, not what we think or hope. If data shows plants with both needs had most leaves, then plants need both—the evidence tells us.

4

Compare the plants. What do the healthy plants have that the others don't?

Results after 12 days:

Plants need only shade. Plants grow best with no sunlight.

Plants need both sunlight and water. Plant A grew most and stayed green.

Plants need no water. Plant C had no water, so it should grow best.

Plants need only a bigger pot. A bigger pot makes leaves green.

Explanation

This question assesses the skill 2-LS2-1: Using evidence from investigation observations to determine what plants need—sunlight and water—to grow. Scientists use evidence from investigations to answer questions by observing what happened in different conditions, then comparing the results; for example, if Plant A with both grew and others without one or both died, this evidence shows plants need both, and we look at the data like measurements, observations, and health to decide what plants need, ensuring our conclusion matches the evidence. The investigation tested sunlight and water, with results showing Plant A had both sunlight and water and grew most and stayed green, while others lacking one or both did not, comparing these results shows that healthy plants have both, which is clear evidence they need them. The correct answer is A because it correctly identifies that plants need both sunlight and water and uses evidence from the investigation, referencing the observations like 'Plant A grew most and stayed green,' and connects these observations to the conclusion by showing what plants need plus evidence from data plus explanation of the connection. Choice B is incorrect because it claims plants need no water and contradicts the evidence, as Plant C without water did poorly; this error happens when students reverse the evidence or make claims without using data. To help students use investigation evidence, use evidence sentence frames: 'Plants need both sunlight and water. The evidence shows: Plant A had both and grew most. Others did not and grew poorly. This proves plants need both,' and teach comparison: (1) Look at healthy plants' conditions, (2) Look at unhealthy ones, (3) What's different? (4) Connect to needs. Practice with T-charts for conditions and results, emphasizing that answers must match data, and watch for students who state needs without evidence or misread conditions.

5

Based on the results, what do plants need most to grow taller?​

Plants need only sunlight. The plant in sun grew even without water.

Plants need bigger pots. The pot size makes leaves green.

Plants do not need water. Dry soil helps plants grow fast.

Plants need water. The plant with water grew 8 inches; the one with no water did not grow.

Explanation

This question tests skill 2-LS2-1: Using evidence from investigation observations to determine what plants need—sunlight and water—to grow. Scientists use EVIDENCE from investigations to answer questions. We observe what happened in different conditions, then COMPARE the results. If Plant with water grew 8 inches and Plant without water grew 0 inches, this EVIDENCE shows plants need water. We look at the DATA—measurements, observations, health—and use it to decide what plants need. Our conclusion must match the evidence. The investigation tested water needs for plant growth. RESULTS: The plant with water grew 8 inches. The plant with no water did not grow at all (0 inches). Comparing these results shows plants need water to grow taller. The plant with water did dramatically better, which is clear evidence. The correct answer is A because it correctly identifies that plants need water AND uses evidence from the investigation. It references the specific observations—the plant with water grew 8 inches while the one with no water did not grow—and connects these observations to the conclusion. The answer shows: state what plants need + use evidence from data + explain connection. Choice B is incorrect because it claims plants need only sunlight and contradicts the evidence that shows water is essential for growth. This error happens when students ignore the clear data about water's importance or focus on the wrong factor. To help students use investigation evidence: Teach comparison process—(1) Look at watered plant conditions and results, (2) Look at unwatered plant conditions and results, (3) What's different about the plants? (4) What's different about results? (5) Connect: Plants with water grew 8 inches, so plants need water. Use evidence sentence frames: 'Plants need water. The evidence shows: The plant with water grew 8 inches. The plant without water grew 0 inches. This proves plants need water.' Make T-chart: Conditions (water/no water) | Results (8 inches/0 inches). Practice reading data tables—'Find the watered plant. How much did it grow? Now find the unwatered plant. Compare!' Emphasize: Our answer must MATCH the data, not what we think or hope. If data shows plant without water didn't grow, then plants need water—the evidence tells us.

6

Based on the data, what does the evidence show plants need?

Plants need only sunlight. The plant with no water grew taller than the watered plant.

Plants need water. The watered plant stayed green and grew; the dry plant wilted and turned brown.

Plants need more soil. More dirt always makes plants grow faster.

Plants need neither water nor sunlight. Both plants were healthy.

Explanation

This question tests skill 2-LS2-1: Using evidence from investigation observations to determine what plants need—sunlight and water—to grow. Scientists use EVIDENCE from investigations to answer questions. We observe what happened in different conditions, then COMPARE the results. If watered plant stayed green and grew while dry plant wilted and turned brown, this EVIDENCE shows plants need water. We look at the DATA—measurements, observations, health—and use it to decide what plants need. Our conclusion must match the evidence. The investigation tested water needs for plant health. RESULTS: The watered plant stayed green and grew. The dry plant (no water) wilted and turned brown. Comparing these results shows plants need water. The plant with water did much better, which is clear evidence. The correct answer is A because it correctly identifies that plants need water AND uses evidence from the investigation. It references the observations—the watered plant stayed green and grew while the dry plant wilted and turned brown—and connects these observations to the conclusion. The answer shows: state what plants need + use evidence from data + explain connection. Choice B is incorrect because it claims plants need only sunlight and contradicts the evidence by saying the plant with no water grew taller, which goes against the stated results. This error happens when students reverse the evidence or misread which plant had which conditions. To help students use investigation evidence: Teach comparison process—(1) Look at watered plant conditions and results, (2) Look at dry plant conditions and results, (3) What's different about the plants? (4) What's different about results? (5) Connect: Plants with water stayed healthy, so plants need water. Use evidence sentence frames: 'Plants need water. The evidence shows: The watered plant stayed green and grew. The dry plant wilted and turned brown. This proves plants need water.' Make T-chart: Conditions (water/no water) | Results (green and growing/wilted and brown). Practice reading data tables—'Find the watered plant. What happened? Now find the dry plant. Compare!' Emphasize: Our answer must MATCH the data, not what we think or hope. If data shows dry plant wilted, then plants need water—the evidence tells us.

7

Based on the table, what do plants need to grow taller and stay green?

Plants need both sunlight and water. Plant A grew 8 inches and was green; Plant B had no water and did not grow.

Plants need only water. Plant B had no water, so it is normal it grew less.

Plants need neither water nor sunlight. The plant will grow if you talk to it.

Plants need only sunlight. Plant B had sun and still did fine without water.

Explanation

This question assesses the skill 2-LS2-1: Using evidence from investigation observations to determine what plants need—sunlight and water—to grow. Scientists use evidence from investigations to answer questions by observing what happened in different conditions, then comparing the results; for example, if Plant A with water grew and Plant B without water died, this evidence shows plants need water, and we look at the data like measurements, observations, and health to decide what plants need, ensuring our conclusion matches the evidence. The investigation tested sunlight and water: Plant A had both and grew 8 inches with green leaves, Plant B had sunlight but no water and did not grow, showing that plants with both did better while those missing one grew less or not at all, which is clear evidence that plants need both to grow taller and stay green. The correct answer is B because it correctly identifies that plants need both sunlight and water and uses evidence from the investigation, referencing specific data like 'Plant A grew 8 inches and was green; Plant B had no water and did not grow,' and connects these observations to the conclusion by highlighting the performance difference. Choice A is incorrect because it claims plants need only sunlight and says Plant B had sun and did fine without water, but this contradicts the evidence that Plant B did not grow; this error happens when students ignore evidence or reverse which plant did better. To help students use investigation evidence, teach comparison: (1) Plant A conditions/results, (2) Plant B, (3) Differences in conditions, (4) in results, (5) Connect to need both. Use frames like 'Plants need both. Evidence: Plant A had both, grew 8 inches green; Plant B no water, no growth. Proves need,' T-charts for practice, emphasize data matching, and require evidence references to avoid opinion-based answers.

8

Look at the results. What can we conclude plants need to grow well?

Plants need both sunlight and water. The plant with both grew most and looked healthiest.

Plants need cold air. Cooler plants always grow taller.

Plants need neither. The unwatered plant grew the same as the watered plant.

Plants need only water. The watered plant grew, so sunlight is not needed.

Explanation

This question tests skill 2-LS2-1: Using evidence from investigation observations to determine what plants need—sunlight and water—to grow. Scientists use EVIDENCE from investigations to answer questions. We observe what happened in different conditions, then COMPARE the results. If Plant with both sunlight and water grew most and looked healthiest, this EVIDENCE shows plants need both. We look at the DATA—measurements, observations, health—and use it to decide what plants need. Our conclusion must match the evidence. The investigation tested what plants need to grow well. RESULTS: The plant with both sunlight and water grew the most and looked healthiest. Plants lacking one or both needs grew less or looked unhealthy. Comparing these results shows plants need both sunlight and water to grow well. The plant with both needs met did best, which is clear evidence. The correct answer is B because it correctly identifies that plants need both sunlight and water AND uses evidence from the investigation. It references the observations—the plant with both grew most and looked healthiest—and connects these observations to the conclusion. The answer shows: state what plants need + use evidence from data + explain connection. Choice A is incorrect because it claims plants need only water and ignores evidence about sunlight's importance, suggesting sunlight is not needed when the data shows otherwise. This error happens when students make partial conclusions or don't consider all factors tested. To help students use investigation evidence: Teach comparison process—(1) Look at plant with both needs conditions and results, (2) Look at plants with only one need conditions and results, (3) What's different about the plants? (4) What's different about results? (5) Connect: Plants with both sunlight and water grew most, so plants need both. Use evidence sentence frames: 'Plants need both sunlight and water. The evidence shows: The plant with both grew most and looked healthiest. Plants with only one need grew less. This proves plants need both.' Make T-chart: Conditions (what plant had) | Results (growth and health). Practice reading data tables—'Find the plant with both needs. How did it grow? Now find plants with only one need. Compare!' Emphasize: Our answer must MATCH the data, not what we think or hope. If data shows plants with both needs grew best, then plants need both—the evidence tells us.

9

Look at the results. What does the evidence show about what plants need?

Results after 10 days:

Plants need both sunlight and water. Plant A did best; Plant D did worst.

Plants need only water. Plant B had water, so it was the healthiest.

Plants need neither sunlight nor water. Plant D was dead because it was too warm.

Plants need only sunlight. Plant C had no sun and still grew best.

Explanation

This question assesses the skill 2-LS2-1: Using evidence from investigation observations to determine what plants need—sunlight and water—to grow. Scientists use evidence from investigations to answer questions by observing what happened in different conditions, then comparing the results; for example, if Plant A with both did best and Plant D with neither did worst, this evidence shows plants need both, and we look at the data like measurements, observations, and health to decide what plants need, ensuring our conclusion matches the evidence. The investigation tested sunlight and water, with results showing Plant A had both and did best, Plant D had neither and did worst, while others lacking one did poorly, comparing these shows plants need both, as the plant with both did better and the one without did worst. The correct answer is A because it correctly identifies that plants need both sunlight and water and uses evidence from the investigation, referencing the observations like 'Plant A did best; Plant D did worst,' and connects these observations to the conclusion by showing what plants need plus evidence from data plus explanation of the connection. Choice C is incorrect because it claims plants need only sunlight but reverses evidence, as Plant C without sun did not grow best; this error happens when students misread data or reverse which plant did better. To help students use investigation evidence, use sentence frames and T-charts: 'Plants need both. Evidence: Plant A had both and did best; Plant D had neither and did worst.' Teach steps like comparing conditions and results across plants, practicing with data, and require explicit evidence to avoid ignoring data or opinion-based claims.

10

Use the data. What does the evidence show about what plants need?

Results after 10 days:

Plants need only darkness. Plant B had no sunlight, so it grew best.

Plants need neither sunlight nor water. Both plants grew the same.

Plants need only water. Plant B had water, so it was healthiest.

Plants need sunlight. Plant A grew taller and stayed green; Plant B was pale and weak.

Explanation

This question assesses the skill 2-LS2-1: Using evidence from investigation observations to determine what plants need—sunlight and water—to grow. Scientists use evidence from investigations to answer questions by observing what happened in different conditions, then comparing the results; for example, if Plant A with sunlight grew and Plant B without sunlight wilted, this evidence shows plants need sunlight, and we look at the data like measurements, observations, and health to decide what plants need, ensuring our conclusion matches the evidence. The investigation tested sunlight, with results showing Plant A had sunlight and grew taller and stayed green, while Plant B had no sunlight and was pale and weak, comparing these results shows that plants need sunlight to grow well, as the plant with sunlight did better, which is clear evidence. The correct answer is A because it correctly identifies that plants need sunlight and uses evidence from the investigation, referencing the observations like 'Plant A grew taller and stayed green; Plant B was pale and weak,' and connects these observations to the conclusion by showing what plants need plus evidence from data plus explanation of the connection. Choice B is incorrect because it claims plants need only darkness and reverses the evidence, stating Plant B grew best when it actually did poorly; this error happens when students reverse which plant did better or ignore what conditions each plant had. To help students use investigation evidence, teach the comparison process: (1) Look at Plant A conditions and results, (2) Look at Plant B conditions and results, (3) What's different about the conditions? (4) What's different about results? (5) Connect: Plants with sunlight did better, so plants need sunlight. Use evidence sentence frames like 'Plants need sunlight. The evidence shows: Plant A had sunlight and grew taller. Plant B did not and was pale. This proves plants need sunlight,' and practice reading data tables with a T-chart for conditions and results, watching for students who misread which plant had what conditions or claim the opposite of what evidence shows.

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