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Science - Reproduction (Plant Reproduction (Parts of a flower (Stigma,…

- - - - Sex cell
        
        The male sex cell is called sperm.
        
        Sperm has mitochondria
        
        The mitochondria releases energy
        
        The sperm needs energy to swim
        
        The sperm is adapted to fertilisation because it has a streamline body, which helps it swim faster. It has also adapted because it has an arrow head so it can break through the egg. In its head are chemicals, which help the sperm get through the egg.
        
        Sperm is made in the Testes
    - - The Menstrual Cycle
        
        Day 8 - Day 28 ~ The lining of the Uterus thickens
        
        Day 14 ~ Ovulation a woman could become pregnant (ovulation ~when the egg is released)
        
        Day 1 - Day 7 ~ Periods (period ~ when the uterus ling breaks down)
        
        The lining builds up to allow the egg to implant onto the lining of the Uterus
        
        The lining breaks down because it is not needed anymore, if you are not pregnant
        
        Sex Cell (Gamete)
        
        The female sex cell is called an egg. it is released by the ovary
        
        The egg has adapted to fertilisation by its large surface area. also it has a large food capacity, so the zygote can grow into and Embryo.
        
        Fertilisation
        
        after fertilisation the egg travels along an oviduct. The fertilised egg cell splits into more and more cells to become and embryo. Each month, one of a woman's ovaries releases an egg cell. the fertilised egg cell continues along the oviduct and into the uterus.
      - A pregnant woman has to be careful about what she takes into her body because : A baby is entirely dependant on its mother during pregnancy , Oxygen and food paces across the placenta from the mother's blood to the embryo's blood and some harmful substances can also pass through the placenta with serious effects on a developing baby.
      - Get genes from both parents
        
        inherits a mixture of features from both parents
        
        A sperm and egg fuse together to make the offspring= Fertilisation