1. Male reproductive cells are called _____
  2. Sperm are _______ than female sex cells and can ____.
    • smaller
    • swim
  3. Sperm ___ have a food store
  4. Female reproductive cells are called ___ cells
  5. Eggs are ______ than sperm and _____ move by themselves.
  6. Eggs ____ a food store
  7. Fertilisation takes place when one male _____ fuses with one female _____. A fertilised ___ is produced.
    • nucleus
    • egg
  8. For fertilisation to occur the sperm must be able to _____ the egg
  9. In fish the females lay their ____ in the water and the males deposit their ____ sperm next to the eggs. This is known as _______ fertilisation because it takes place _______ the female's body.
    • eggs
    • sperm
    • external
    • outside
  10. ________ fertilisation takes place inside the female's body, therefore the sperm must be _____ inside the female's body.
    • Internal
    • placed
  11. Internal fertilistion is important to land-living animals because there is no ______ environment into which eggs and sperm can be released.
  12. In animals that use internal fertilisation, the male produces a liquid containing sperm which is ________ inside the female's body during ______
    • deposited
    • mating
  13. Sperm are produced in _____
  14. During mating the sperm pass along the _____ ____ to the penis, which deposits the sperm inside the female's body.
    sperm duct
  15. Eggs are produced in the ____ and are released into the ______.
    • ovaries
    • oviducts
  16. The embryo develops in the _____
  17. Sperm enter the female's body via the ______
  18. After fertilisation the fertilised egg develops into an ______
  19. In fish the fertilisation egg is protected by a _____ _______ and the embryo obtains its food from the enclosed ___
    • flexible covering
    • yolk
  20. In mammals fertilisation occurs in the ______
  21. The fertilisated egg passes down the oviduct to the uterus where it becomes attached to the ____ of the ______.
    • wall
    • uterus
  22. As the embryo continues to develop, a fluid-filled bag called the ______ ___ protects it.
    amniotic sac
  23. The embryo receives nutrients from its mother's _____
  24. Blood coming from the embryo to the placenta carried waste substances like _______. These waste substances pass into the mother's _____ and are carried away.
    • carbon dioxide.
    • blood
  25. Oxygen and digested food pass into the embryo's blood from the mother's blood in the ________
  26. In fish, the young are born with a ____ ___ attached, which they use for food until they can find their own. They _____ receive any parental support.
    • yolk sac
    • dont
  27. When young mammals are born, they are ________ on their parents at first for care and protection. Their mothers provide them with ____
    • dependant
    • milk
  28. The ______ the degree of care and protection provided by parents, the _____ eggs and young need to be produced.
    • greater
    • fewer
  29. In animals like fish, parents provide very _____ care or protection during the processes of fertilisation and development.
  30. Fish must produce ____ eggs to ensure that enough are fertilised and that enough young survive to keep the species from becoming ______
    • many
    • extinct
  31. In mammals parents provide ____ care and protection, so _____ eggs and young need to be produced.
    • more
    • fewer
Card Set
Biology, Animal Survival, Subtopic