Long Answer Type(a) Arrange the following hormones in the sequence of their secretion in a pregnant woman.
(b) Mention their source and the function they perform.
Short Answer TypeMedically it is advised to all young mothers that breastfeedings is the best for their newborn babies. Do you agree? Give reasons in support of your answer.
Draw a diagram of a mature human sperm. Label any three parts and write their functions.
(1) Acrosome: It is a cap-like structure, filled with hydrolytic enzymes that help fertilisation of the ovum.
(2) Middle piece: Possesses numerous mitochondria, which produces energy for the movement of tail.
(3) Tail: Facilitate sperm motility essential for fertilisation.
How can the scientific understanding of the mentrual cycle of human females help as a contraceptive measure ?
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