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Standard XII
Biology
Sperm Anatomy
Draw a diagra...
Question
Draw a diagram of a mature human sperm. Label any three parts and write their functions. [3]
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Solution
FIG: A mature sperm
[1.5 marks for labelling the three parts ]
(i) Plasma Membrane: Its function is associated with sperm capacitation, acrosome reaction and sperm-egg fusion. [0.5]
(ii) Acrosome: Acrosome contains hydrolytic enzymes (called sperm lysins) which are capable of dissolving the membranes covering the ovum. [0.5]
(iii) Middle piece: They have spirally arranged mitochindria around the axial filament which produces energy which helps the sperm to swim. [0.5]
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