Topic 1: Classification of Organisms

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Across
  1. 5. Two body parts (cephalothorax and abdomen), four pairs of legs, no antennae (e.g., spiders, scorpions)
  2. 7. All chemical processes inside an organism that maintain life
  3. 9. Hard exoskeleton, two pairs of antennae, mostly live in water (e.g., crabs, lobsters)
  4. 11. Action by an organism or part of an organism that causes a change in position or place
  5. 13. Warm-blooded, have hair or fur, give birth to live young, feed young with milk
  6. 14. Permanent increase in size and dry mass
  7. 15. Organisms with scales, fins, gills for breathing
  8. 18. Many body segments, each with one or two pairs of legs (e.g., centipedes, millipedes)
  9. 21. Plants with leaves called fronds, reproduce by spores (not seeds), no flowers
  10. 22. The biological process that produces new individuals of the same kind
  11. 24. Three body parts (head, thorax, abdomen), three pairs of legs, usually wings (e.g., ants, butterflies)
  12. 25. Cold-blooded, dry scaly skin, most lay leathery eggs on land
Down
  1. 1. Ability to detect and respond to changes in the environment (internal or external)
  2. 2. Removal of waste products of metabolism (e.g., carbon dioxide, urea) and substances in excess
  3. 3. Animals with a backbone
  4. 4. A group of organisms that can reproduce to produce fertile offspring
  5. 6. Organisms with moist skin, live on land and in water, lay eggs in water
  6. 8. Warm-blooded organisms with hair, give birth to live young, feed milk
  7. 10. A change in the environment that causes a response
  8. 12. Organisms with jointed legs and exoskeleton
  9. 15. plants Plants that reproduce by seeds inside flowers
  10. 16. Organisms with dry scaly skin, lay eggs with soft shells on land
  11. 17. Chemical reactions in cells that break down nutrient molecules and release energy
  12. 19. Intake of food and other nutrients for energy, growth, and development
  13. 20. Warm-blooded, have feathers, beaks, lay eggs with hard shells
  14. 23. Organisms with feathers, beaks, lay eggs with hard shells