Cells and Classification

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Across
  1. 2. The acronym to describe characteristics of all living organisms
  2. 3. A vertebrate that can breathe on land and in water, like frogs. They have smooth, damp skin and they breathe using lungs as well as through their skin. They lay their eggs in water.
  3. 6. a collection of tissues that work together to carry out particular functions
  4. 8. The liquid outside the nucleus of a cell in which the other cell structures are found. Both plant and animal cells have this
  5. 9. A thick cellulose layer found around the outside of plant cells (two words - no space)
  6. 12. A group of similar cells that are organised to carry out the same function
  7. 14. A vertebrate that are warm-blooded with two legs, two wings, and feathered bodies. Most of them can fly. They have beaks and they lay eggs with hard shells.
  8. 15. The building blocks of all living things
  9. 16. Differences in traits
  10. 17. A vertebrate that are warm-blooded and have hair/fur on their bodies. Their young develop inside the mother and are born alive (not inside an egg shell). The mother makes milk in her body to feed the young.
  11. 18. these are categories of _____: Insecta, Arachnida, Crustacea, Myriapoda
  12. 19. A vertebrate that breathe air using lungs. They have dry, scaly skin and they lay eggs on dry land.
  13. 20. A vertebrate that lives in water. They breathe through gills. Their bodies are covered with scales and they use fins to swim.
  14. 21. these are categories of ____ : Cnidaria, Annelida, Mollusca, Echinodermata, Arthropoda
Down
  1. 1. a group of organs that work together to perform a function (two words - no space)
  2. 4. The thin layer around the contents of plant and animal cells (two words - no space)
  3. 5. Ordering of plants and animals into groups
  4. 7. Part of a cell, the control centre of the cell. Both plant and animal cells have this
  5. 8. Small structures in plant cells that contain chlorophyll
  6. 10. A chemical found in plants which gives them their green colour
  7. 11. The space in a plant cell filled with cell sap
  8. 13. One kind of animal or plant (they will be able to reproduce and have fertile offspring)