Biology terms

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Across
  1. 3. , ________ segmentation - A body plan in animals in which there is a linear repetition of functional units, which are added at the posterior end (e.g. annelids).
  2. 5. , A high energy organic molecule used to store energy in living organisms.
  3. 7. , A class of echinoderms; feather stars and sea lilies.
  4. 10. , A class of cnidarians that includes sea anemones and corals.
  5. 13. , A chordate animal (Superclass Gnathostomata) that has a backbone of vertebrae which develop around, and replace, the notochord during development.
  6. 16. , 2 words, A fixed ring of meristematic cells which occurs in plants with secondary growth. It produces secondary xylem on the inside and produces secondary phloem towards the outside.
  7. 17. , A higher level taxon (grouping) used in classifying organisms; below phyla.
  8. 22. , A form of metabolism that requires oxygen.
  9. 23. , A eukaryotic Kingdom of organisms including mushrooms and yeast.
  10. 25. , A embryonic cavity in animals which becomes the gut.
  11. 27. , A class of insects which all have wings.
  12. 28. , A eukaryotic Kingdom of organisms including worms, insects, mammals and humans.
  13. 29. , A free living organism that is morphologically very different from the embryo and adult.
  14. 31. , A contractible sac at the base of a tube foot, in the water vascular system of echinoderms.
  15. 33. , A cell containing only one copy of every chromosome.
  16. 36. , A developmental stage some insect life cycles between the larva and the adult; it is non-feeding, immobile and sometimes encapsulated or in a cocoon.
  17. 37. , A single celled organism moving and feeding using pseudopodia (i.e. false feet).
  18. 38. , A class of echinoderms, the sea cucumbers.
  19. 39. , A class of flatworms; the tapeworms.
  20. 40. , A eukaryotic Kingdom of organisms including algae.
  21. 41. , A form of asexual reproduction in which a complete organism forms from small fragments of its body.
  22. 45. , A class of Phylum Platyhelminthes (flatworms); endoparasitic flukes.
  23. 47. , A class of arthropods that includes spiders, scorpions, ticks and mites.
  24. 48. , A crystal of calcium carbonate me; it is first formed within a cell, enlarging to a plate beneath the skin; forming the skeleton of echinoderms.
  25. 49. , A eukaryotic Kingdom of organisms including mosses, ferns, trees and shrubs.
Down
  1. 1. , A class of cnidarians that has polyps as the dominant life stage; for example, Hydra or Obelia.
  2. 2. , A body cavity with one opening to the outside; it functions as a digestive and circulatory system.
  3. 4. , A fungus that forms a relationship with a plant, increasing nutrient supply to the plant and receiving carbohydrate from the plant.
  4. 6. , A class of Platyhelminthes; ectoparasitic flukes.
  5. 8. , ____________respiration - A form of metabolism that does not require oxygen.
  6. 9. , A haploid cell which can combine with another gamete to undergo fertilisation (i.e. sperm, eggs).
  7. 11. , A class of cnidarians; the box jellies.
  8. 12. , A container or capsule made by animals to protect eggs and young.
  9. 14. , A circulatory system in which blood flows through a series of vessels and is kept separate from other fluids inside an animal's body.
  10. 15. , A class of echinoderms which includes the sea urchins and sand dollars.
  11. 18. , A class of Phylum Platyhelminthes; free living flatworms.
  12. 19. , A cell containing only two copies (or a pair) of every chromosome.
  13. 20. , A class of echinoderms; brittle stars.
  14. 21. , A genus of conifer, Pinus, used for timber and paper.
  15. 24. , A cylindrical rod below the nerve chord and above the gut in all chordates that provides support and lateral flexibility to the body.
  16. 26. , A group of higher vascular plant phyla that have seeds, pollen grains and wood but not flowers. It includes cycads and conifers.
  17. 30. , A high energy organic molecule used to store energy in living organisms.
  18. 32. , A depression, forming into a pore, in the growing embryo.
  19. 33. , 2 words, A fluid filled body cavity, surrounded by muscles, that gives support and shape to the body of organisms.
  20. 34. , A circulatory system in which blood flows partly through a series of vessels but mingles with other fluids inside an animal's body at some times.
  21. 35. , A descriptive generalisation about how some aspect of the natural world behaves under stated circumstances.
  22. 42. , A cells specialised for receiving, conducting and transmitting information to other cells; the basic unit of the nervous system.
  23. 43. , A herbaceous plant, may be a monocot or a dicot plant.
  24. 44. , A cell in a cnidarian that contains a nematocyst (stinging cell).
  25. 46. , A group of segmented worms, including earthworms, leeches and marine worms.