Biology

Here is a list of all of the skills that cover biology! These skills are organized by grade, and you can move your mouse over any skill name to preview the skill. To start practicing, just click on any link. IXL will track your score, and the questions will automatically increase in difficulty as you improve!

Here is a list of all of the skills that cover biology! To start practicing, just click on any link.

Third-grade skills

  1. J.1 Identify living and nonliving things
  2. J.2 Identify plants and animals
  3. J.3 Identify mammals, birds, fish, reptiles, and amphibians
  4. J.4 Identify vertebrates and invertebrates
  5. K.1 Read animal life cycle diagrams
  6. K.2 Construct animal life cycle diagrams
  7. K.3 Compare stages of an animal's life cycle
  8. K.4 Compare different animals' life cycles
  9. K.5 Benefits of group behavior: North American caribou
  10. K.6 Benefits of group behavior: African wild dogs
  11. K.7 Benefits of group behavior: leaf-cutter ants
  12. L.1 Classify fruits and vegetables as plant parts
  13. L.2 Identify plant parts and their functions
  14. L.3 How do plants make food?
  15. L.4 Read and construct flowering plant life cycle diagrams
  16. L.5 How do flowering plants make new plants?
  17. M.1 Observe and compare traits
  18. M.2 What affects traits? Use observations to support a hypothesis
  19. N.1 Introduction to adaptations
  20. N.2 Animal adaptations: beaks, mouths, and necks
  21. N.3 Animal adaptations: feet and limbs
  22. N.4 Animal adaptations: skins and body coverings
  23. O.1 Match offspring to parents using inherited traits
  24. O.2 Identify inherited and acquired traits
  25. O.3 Inherited and acquired traits: use evidence to support a statement
  26. O.4 Read a plant pedigree chart
  27. O.5 Read an animal pedigree chart
  28. P.1 Identify ecosystems
  29. P.2 Describe ecosystems
  30. P.3 Identify roles in food chains
  31. P.4 How does matter move in food chains?
  32. P.5 Interpret food webs
  33. R.1 Introduction to fossils
  34. R.2 Compare fossils to modern organisms
  35. R.3 Compare ancient and modern organisms: use observations to support a hypothesis

Fourth-grade skills

  1. J.1 Identify living and nonliving things
  2. J.2 Identify mammals, birds, fish, reptiles, and amphibians
  3. J.3 Identify vertebrates and invertebrates
  4. J.4 Use evidence to classify mammals, birds, fish, reptiles, and amphibians
  5. J.5 Use evidence to classify animals
  6. J.6 Describe, classify, and compare kingdoms
  7. K.1 Identify common and scientific names
  8. K.2 Origins of scientific names
  9. K.3 Use scientific names to classify organisms
  10. L.1 Read and construct animal life cycle diagrams
  11. L.2 Compare animal life cycles
  12. L.3 Body systems: circulation and respiration
  13. L.4 Body systems: digestion
  14. L.5 Body systems: removing waste
  15. L.6 Body systems: perception and motion
  16. M.1 Classify fruits and vegetables as plant parts
  17. M.2 Identify plant parts and their functions
  18. M.3 How do plants make food?
  19. M.4 Identify flower parts and their functions
  20. M.5 Describe and construct flowering plant life cycles
  21. M.6 Describe and construct conifer life cycles
  22. N.1 Introduction to adaptations
  23. N.2 Animal adaptations: beaks, mouths, and necks
  24. N.3 Animal adaptations: feet and limbs
  25. N.4 Animal adaptations: skins and body coverings
  26. O.1 What affects traits? Use observations to support a hypothesis
  27. O.2 Match offspring to parents using inherited traits
  28. O.3 Identify inherited and acquired traits
  29. O.4 Inherited and acquired traits: use evidence to support a statement
  30. O.5 Read a plant pedigree chart
  31. O.6 Read an animal pedigree chart
  32. P.1 Identify functions of plant cell parts
  33. P.2 Identify functions of animal cell parts
  34. P.3 Plant cell diagrams: identify parts
  35. P.4 Animal cell diagrams: identify parts
  36. P.5 Plant cell diagrams: label parts
  37. P.6 Animal cell diagrams: label parts
  38. P.7 Compare plant and animal cells
  39. P.8 Cell part functions: true or false
  40. Q.1 Identify ecosystems
  41. Q.2 Describe ecosystems
  42. Q.3 Identify roles in food chains
  43. Q.4 How does matter move in food chains?
  44. Q.5 Interpret food webs
  45. T.1 Introduction to fossils
  46. T.2 Identify and classify fossils
  47. T.3 Compare fossils to modern organisms
  48. T.4 Compare ancient and modern organisms: use observations to support a hypothesis
  49. T.5 Interpret evidence from fossils in rock layers

Fifth-grade skills

  1. I.1 Identify mammals, birds, fish, reptiles, and amphibians
  2. I.2 Identify vertebrates and invertebrates
  3. I.3 Use evidence to classify mammals, birds, fish, reptiles, and amphibians
  4. I.4 Use evidence to classify animals
  5. I.5 Describe, classify, and compare kingdoms
  6. J.1 Identify common and scientific names
  7. J.2 Origins of scientific names
  8. J.3 Use scientific names to classify organisms
  9. K.1 Read and construct animal life cycle diagrams
  10. K.2 Compare animal life cycles
  11. K.3 Body systems: circulation and respiration
  12. K.4 Body systems: digestion
  13. K.5 Body systems: removing waste
  14. K.6 Body systems: perception and motion
  15. L.1 Classify fruits and vegetables as plant parts
  16. L.2 Identify plant parts and their functions
  17. L.3 How do plants make food?
  18. L.4 Identify flower parts and their functions
  19. L.5 Flowering plant and conifer life cycles
  20. L.6 Moss and fern life cycles
  21. L.7 Identify the photosynthetic organism
  22. M.1 Animal adaptations: beaks, mouths, and necks
  23. M.2 Animal adaptations: feet and limbs
  24. M.3 Animal adaptations: skins and body coverings
  25. N.1 Match offspring to parents using inherited traits
  26. N.2 Identify inherited and acquired traits
  27. N.3 Inherited and acquired traits: use evidence to support a statement
  28. N.4 Read a plant pedigree chart
  29. N.5 Read an animal pedigree chart
  30. O.1 Identify functions of plant cell parts
  31. O.2 Identify functions of animal cell parts
  32. O.3 Animal and plant cell diagrams: identify parts
  33. O.4 Plant cell diagrams: label parts
  34. O.5 Animal cell diagrams: label parts
  35. O.6 Compare cells and cell parts
  36. P.1 Identify ecosystems
  37. P.2 Describe ecosystems
  38. P.3 Identify roles in food chains
  39. P.4 How does matter move in food chains?
  40. P.5 Interpret food webs I
  41. P.6 Interpret food webs II
  42. Q.1 Science literacy: how can a community protect sea turtles?
  43. S.1 Introduction to fossils
  44. S.2 Identify and classify fossils
  45. S.3 Compare fossils to modern organisms
  46. S.4 Compare ancient and modern organisms: use observations to support a hypothesis
  47. S.5 Interpret evidence from fossils in rock layers

Sixth-grade skills

  1. M.1 Identify common and scientific names
  2. M.2 Origins of scientific names
  3. M.3 Use scientific names to classify organisms
  4. N.1 Structure and function: carbohydrates, lipids, proteins, and nucleic acids
  5. N.2 Understanding the chemistry of cellular respiration
  6. O.1 Understanding cells
  7. O.2 Identify functions of plant cell parts
  8. O.3 Identify functions of animal cell parts
  9. O.4 Plant cell diagrams: label parts
  10. O.5 Animal cell diagrams: label parts
  11. O.6 Compare cells and cell parts
  12. P.1 Organization in the human body: the heart and the circulatory system
  13. P.2 Science literacy: how does the nervous system produce phantom pain?
  14. Q.1 Inherited and acquired traits: use evidence to support a statement
  15. Q.2 Genetics vocabulary: genotype and phenotype
  16. Q.3 Genetics vocabulary: dominant and recessive
  17. Q.4 Genetic variation in sexual reproduction
  18. Q.5 Complete and interpret Punnett squares
  19. Q.6 Use Punnett squares to calculate ratios of offspring types
  20. Q.7 Genes, proteins, and traits: understanding the genetic code
  21. Q.8 Describe the effects of gene mutations on organisms
  22. Q.9 How do genes and the environment affect plant growth?
  23. R.1 How can animal behaviors affect reproductive success? Identify evidence to support a claim
  24. R.2 Introduction to natural selection
  25. R.3 Calculate the percentages of traits in a population
  26. R.4 Calculate the averages of traits in a population
  27. R.5 Construct explanations of natural selection
  28. S.1 Compare ages of fossils in a rock sequence
  29. T.1 Flowering plant and conifer life cycles
  30. T.2 Moss and fern life cycles
  31. U.1 How do plants use and change energy?
  32. U.2 Identify the photosynthetic organism
  33. V.1 Describe populations, communities, and ecosystems
  34. V.2 Identify ecosystems
  35. V.3 Describe ecosystems
  36. W.1 How does matter move in food chains?
  37. W.2 Interpret food webs I
  38. W.3 Interpret food webs II
  39. W.4 Use food chains to predict changes in populations
  40. W.5 Classify symbiotic relationships
  41. W.6 Investigate primary succession on a volcanic island
  42. X.1 Coral reef biodiversity and human uses: explore a problem
  43. X.2 Coral reef biodiversity and human uses: evaluate solutions

Seventh-grade skills

  1. M.1 Identify common and scientific names
  2. M.2 Origins of scientific names
  3. M.3 Use scientific names to classify organisms
  4. N.1 Structure and function: carbohydrates, lipids, proteins, and nucleic acids
  5. N.2 Understanding the chemistry of cellular respiration
  6. O.1 Understanding cells
  7. O.2 Identify functions of plant cell parts
  8. O.3 Identify functions of animal cell parts
  9. O.4 Plant cell diagrams: label parts
  10. O.5 Animal cell diagrams: label parts
  11. O.6 Compare cells and cell parts
  12. P.1 Organization in the human body: the heart and the circulatory system
  13. P.2 Science literacy: how does the nervous system produce phantom pain?
  14. Q.1 Inherited and acquired traits: use evidence to support a statement
  15. Q.2 Genetics vocabulary: genotype and phenotype
  16. Q.3 Genetics vocabulary: dominant and recessive
  17. Q.4 Genetic variation in sexual reproduction
  18. Q.5 Complete and interpret Punnett squares
  19. Q.6 Use Punnett squares to calculate ratios of offspring types
  20. Q.7 Use Punnett squares to calculate probabilities of offspring types
  21. Q.8 Genes, proteins, and traits: understanding the genetic code
  22. Q.9 Describe the effects of gene mutations on organisms
  23. Q.10 How do genes and the environment affect plant growth?
  24. R.1 How can animal behaviors affect reproductive success? Identify evidence to support a claim
  25. R.2 Introduction to natural selection
  26. R.3 Calculate the percentages of traits in a population
  27. R.4 Calculate the averages of traits in a population
  28. R.5 Construct explanations of natural selection
  29. S.1 Compare ages of fossils in a rock sequence
  30. T.1 Angiosperm and conifer life cycles
  31. T.2 Moss and fern life cycles
  32. U.1 How do plants use and change energy?
  33. U.2 Identify the photosynthetic organism
  34. V.1 Describe populations, communities, and ecosystems
  35. V.2 Identify ecosystems
  36. V.3 Describe ecosystems
  37. W.1 How does matter move in food chains?
  38. W.2 Interpret food webs I
  39. W.3 Interpret food webs II
  40. W.4 Use food chains to predict changes in populations
  41. W.5 Classify symbiotic relationships
  42. W.6 Investigate primary succession on a volcanic island
  43. X.1 Coral reef biodiversity and human uses: explore a problem
  44. X.2 Coral reef biodiversity and human uses: evaluate solutions

Eighth-grade skills

  1. M.1 Identify common and scientific names
  2. M.2 Origins of scientific names
  3. M.3 Use scientific names to classify organisms
  4. N.1 Structure and function: carbohydrates, lipids, proteins, and nucleic acids
  5. N.2 Understanding the chemistry of cellular respiration
  6. O.1 Understanding cells
  7. O.2 Identify functions of plant cell parts
  8. O.3 Identify functions of animal cell parts
  9. O.4 Plant cell diagrams: label parts
  10. O.5 Animal cell diagrams: label parts
  11. O.6 Compare cells and cell parts
  12. P.1 Organization in the human body: the heart and the circulatory system
  13. P.2 Science literacy: how does the nervous system produce phantom pain?
  14. Q.1 Inherited and acquired traits: use evidence to support a statement
  15. Q.2 Genetics vocabulary: genotype and phenotype
  16. Q.3 Genetics vocabulary: dominant and recessive
  17. Q.4 Genetic variation in sexual reproduction
  18. Q.5 Complete and interpret Punnett squares
  19. Q.6 Use Punnett squares to calculate ratios of offspring types
  20. Q.7 Use Punnett squares to calculate probabilities of offspring types
  21. Q.8 Genes, proteins, and traits: understanding the genetic code
  22. Q.9 Describe the effects of gene mutations on organisms
  23. Q.10 How do genes and the environment affect plant growth?
  24. R.1 How can animal behaviors affect reproductive success? Identify evidence to support a claim
  25. R.2 Introduction to natural selection
  26. R.3 Calculate the percentages of traits in a population
  27. R.4 Calculate the averages of traits in a population
  28. R.5 Construct explanations of natural selection
  29. S.1 Compare ages of fossils in a rock sequence
  30. T.1 Angiosperm and conifer life cycles
  31. T.2 Moss and fern life cycles
  32. U.1 How do plants use and change energy?
  33. U.2 Identify the photosynthetic organism
  34. V.1 Describe populations, communities, and ecosystems
  35. V.2 Identify ecosystems
  36. V.3 Describe ecosystems
  37. W.1 How does matter move in food chains?
  38. W.2 Interpret food webs I
  39. W.3 Interpret food webs II
  40. W.4 Use food chains to predict changes in populations
  41. W.5 Classify symbiotic relationships
  42. W.6 Investigate primary succession on a volcanic island
  43. X.1 Coral reef biodiversity and human uses: explore a problem
  44. X.2 Coral reef biodiversity and human uses: evaluate solutions