© Cambridge University Press 2003, 2006, B multiple-choice extension test 1 Year 7 multiple-choice extension test 7B Reproduction For each question circle the correct answer.

© Cambridge University Press 2003, 2006, B multiple-choice extension test 2 Question 1 Gametes are... A)female sex cells only B)male and female sex cells C)male sex cells only D)sex cells in animals only

© Cambridge University Press 2003, 2006, B multiple-choice extension test 3 Question 2 The nucleus of a cell contains inherited material. The nucleus of a sperm contains... A)half as much inherited material as a body cell nucleus B)more inherited material than an egg cell C)the same amount of inherited material as a body cell nucleus D)twice as much inherited material as a body cell nucleus

© Cambridge University Press 2003, 2006, B multiple-choice extension test 4 Question 3 Some women are infertile because their oviducts are blocked or damaged. They can be helped to have a baby by... A)artificial insemination B)removing their oviducts C)test tube (in-vitro) fertilisation D)treatment with hormones to make them release ova

© Cambridge University Press 2003, 2006, B multiple-choice extension test 5 Question 4 All the sentences are about twins. Choose the incorrect sentence. A)Twins are always identical. B)Twins can be one boy and one girl. C)Twins can grow from two ova fertilised by two separate sperm. D)Twins can grow when a fertilised ovum divides to form two separate embryos.

© Cambridge University Press 2003, 2006, B multiple-choice extension test 6 Question 5 An embryo becomes a fetus when all its main organs have started to grow. This happens at about... A)2 weeks B)4 weeks C)8 weeks D)16 weeks

© Cambridge University Press 2003, 2006, B multiple-choice extension test 7 Question 6 The amniotic fluid... A)is for the baby to drink B)keeps the baby clean C)protects the baby against disease D)supports the baby

© Cambridge University Press 2003, 2006, B multiple-choice extension test 8 Question 7 The graph shows the growth of a baby in the uterus (womb). The length of the baby at 30 weeks is... A)6 cm B)12 cm C)24 cm D)40 cm

© Cambridge University Press 2003, 2006, B multiple-choice extension test 9 Question 8 The graph shows the growth of a baby in the uterus (womb). The length of the baby at 12 weeks is... A)6 cm B)12 cm C)24 cm D)40 cm

© Cambridge University Press 2003, 2006, B multiple-choice extension test 10 Question 9 The graph shows the growth of a baby in the uterus (womb). The baby is 32 cm long after... A)6 weeks B)12 weeks C)24 weeks D)40 weeks

© Cambridge University Press 2003, 2006, B multiple-choice extension test 11 Question 10 The graph shows the growth of a baby in the uterus (womb). The baby is 2.5 cm long after... A)6 weeks B)12 weeks C)24 weeks D)40 weeks