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Indiana State Assessments · ILEARN Biology ECA

Indiana ILEARN Biology ECA Practice Test

Build Indiana Biology readiness with five focused 10-question practice sets covering cells, genetics, ecology, evolution, energy, scientific practices, data, and evidence.

Indiana ILEARN Biology ECA practice sets

This Indiana ILEARN Biology ECA Practice Test page provides five short practice sets with 10 original multiple-choice questions each. The sets cover cells and genetics, ecology and evolution, matter and energy in organisms, scientific practices and data, and integrated biology review.

Biology ECA skills

The Indiana Department of Education identifies ILEARN Biology as an end-of-course assessment completed after students finish a high school Biology course. These supplemental sets practice biological systems, heredity, energy and matter, ecology, evolution, models, data analysis, and evidence-based explanations.

How to use this page

Complete one 10-question set at a time. Read every model, graph, table, and evidence statement carefully, then review the explanation after each response.

This is supplemental State Test Practice, State Assessment Practice, and Standardized Test Practice. It does not replace current Indiana Department of Education guidance, official materials, accommodations, or testing procedures.

For broader grade-level study paths, explore Elementary School Tests, Middle School Tests, and High School Tests.

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1. Test2. Test3. Test4. Test5. Test

1. Test

Indiana ILEARN Biology ECA Practice Questions

A 10-question Indiana ILEARN Biology ECA practice set on cells and genetics, with answers and explanations.

Read each scenario, model, data table, or investigation carefully, choose one answer, and review the explanation after responding.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

Which structure controls many activities of a eukaryotic cell?

Please select an answer first.

Correct answer: A

The correct answer is The nucleus.

  1. Read the Biology ECA task: Identify the biological system, evidence, relationship, or mechanism described in the question.
  2. Use the evidence: The nucleus contains genetic material and helps regulate cell activities.
  3. Check the claim: Confirm that the answer is supported by the model, data, scenario, or biological principle.

The nucleus contains genetic material and helps regulate cell activities.

2. QuestionMultiple choice

Which organelle is the main site of cellular respiration?

Please select an answer first.

Correct answer: B

The correct answer is Mitochondrion.

  1. Read the Biology ECA task: Identify the biological system, evidence, relationship, or mechanism described in the question.
  2. Use the evidence: Mitochondria release usable energy from food molecules during cellular respiration.
  3. Check the claim: Confirm that the answer is supported by the model, data, scenario, or biological principle.

Mitochondria release usable energy from food molecules during cellular respiration.

3. QuestionMultiple choice

What is the basic unit of heredity?

Please select an answer first.

Correct answer: C

The correct answer is A gene.

  1. Read the Biology ECA task: Identify the biological system, evidence, relationship, or mechanism described in the question.
  2. Use the evidence: A gene is a segment of DNA that contributes to an inherited trait.
  3. Check the claim: Confirm that the answer is supported by the model, data, scenario, or biological principle.

A gene is a segment of DNA that contributes to an inherited trait.

4. QuestionMultiple choice

Which molecule stores genetic information in most living organisms?

Please select an answer first.

Correct answer: D

The correct answer is DNA.

  1. Read the Biology ECA task: Identify the biological system, evidence, relationship, or mechanism described in the question.
  2. Use the evidence: DNA stores the instructions used to build and maintain an organism.
  3. Check the claim: Confirm that the answer is supported by the model, data, scenario, or biological principle.

DNA stores the instructions used to build and maintain an organism.

5. QuestionMultiple choice

What happens during mitosis?

Please select an answer first.

Correct answer: A

The correct answer is One cell produces two genetically similar body cells..

  1. Read the Biology ECA task: Identify the biological system, evidence, relationship, or mechanism described in the question.
  2. Use the evidence: Mitosis supports growth and repair by producing genetically similar body cells.
  3. Check the claim: Confirm that the answer is supported by the model, data, scenario, or biological principle.

Mitosis supports growth and repair by producing genetically similar body cells.

6. QuestionMultiple choice

A mutation is best described as what?

Please select an answer first.

Correct answer: B

The correct answer is A change in genetic material.

  1. Read the Biology ECA task: Identify the biological system, evidence, relationship, or mechanism described in the question.
  2. Use the evidence: A mutation changes DNA and may have harmful, helpful, or neutral effects.
  3. Check the claim: Confirm that the answer is supported by the model, data, scenario, or biological principle.

A mutation changes DNA and may have harmful, helpful, or neutral effects.

7. QuestionMultiple choice

Which process makes sex cells with half the usual number of chromosomes?

Please select an answer first.

Correct answer: C

The correct answer is Meiosis.

  1. Read the Biology ECA task: Identify the biological system, evidence, relationship, or mechanism described in the question.
  2. Use the evidence: Meiosis produces sex cells with half the chromosome number so fertilization can restore the full number.
  3. Check the claim: Confirm that the answer is supported by the model, data, scenario, or biological principle.

Meiosis produces sex cells with half the chromosome number so fertilization can restore the full number.

8. QuestionMultiple choice

If two parents each pass one allele for a trait to their offspring, how many alleles does the offspring receive for that trait?

Please select an answer first.

Correct answer: D

The correct answer is Two.

  1. Read the Biology ECA task: Identify the biological system, evidence, relationship, or mechanism described in the question.
  2. Use the evidence: An offspring generally receives one allele from each parent for a trait.
  3. Check the claim: Confirm that the answer is supported by the model, data, scenario, or biological principle.

An offspring generally receives one allele from each parent for a trait.

9. QuestionMultiple choice

What is the role of ribosomes in a cell?

Please select an answer first.

Correct answer: A

The correct answer is They help build proteins..

  1. Read the Biology ECA task: Identify the biological system, evidence, relationship, or mechanism described in the question.
  2. Use the evidence: Ribosomes assemble proteins using information carried by RNA.
  3. Check the claim: Confirm that the answer is supported by the model, data, scenario, or biological principle.

Ribosomes assemble proteins using information carried by RNA.

10. QuestionMultiple choice

Why can siblings have different traits even when they have the same parents?

Please select an answer first.

Correct answer: B

The correct answer is They can inherit different combinations of alleles..

  1. Read the Biology ECA task: Identify the biological system, evidence, relationship, or mechanism described in the question.
  2. Use the evidence: Different allele combinations contribute to genetic variation among siblings.
  3. Check the claim: Confirm that the answer is supported by the model, data, scenario, or biological principle.

Different allele combinations contribute to genetic variation among siblings.

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Frequently asked questions about Indiana ILEARN Biology ECA Practice

When is the Indiana Biology ECA taken?

The Indiana Department of Education identifies the Biology End-of-Course Assessment as an ILEARN assessment taken upon completion of the high school Biology course. Check the official ILEARN page for current participation guidance.

Which biology skills are included?

The practice sets include cells, genetics, ecology, evolution, matter and energy, homeostasis, scientific practices, data analysis, models, and evidence-based reasoning.

Are these official Biology ECA questions?

No. These are original supplemental practice questions. Check the official Indiana Department of Education ILEARN page for current blueprints, released items, accommodations, and testing procedures.