Biology - Topic 4

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Across
  1. 4. makes the cell walls water proof and stronger
  2. 6. type of cell that is full, all its content still intact
  3. 7. narrow fluid filled channels
  4. 9. a change in allele frequency in a population over time
  5. 10. type of classification
  6. 11. selection how organisms change over time to adapt to their changing environment
  7. 12. pool all alleles of the genes present in a population
Down
  1. 1. kingdom that are multicellular eukaryotes that are heterotrophs
  2. 2. richness number of species present in a given habitat
  3. 3. Organism which is specialised to suit its environment
  4. 5. drift change in allele frequencies over time
  5. 8. Type of adaptation which we can observe
  6. 11. The way an organism exploits its environment