IB induction        HL Physio Option Nerves & Muscles
SL Core Topics         Resp. & Photosyn.
Cells & Organelles         Plant Science
Biochemistry       .                                                            HL Genetics
Ecology                                                                              Human Reprod.
Genetics         Nucleic Acids
Health & Physiology         Excretion
Neurobiology   Experiments  

  ISTScience

Immune System

 

Human Reproduction (21 Pages)
Essay Questions

1. (a) Explain the importance of gametes and fertilization in sexual reproduction                                                                                                                (6)
    (b) Draw a labeled diagram of a human sperm                                      (5)
    (c) Describe the process of oogenesis in human females                        (7)

2. (a) State the sources of variation resulting from sexual reproduction       (6)
    (b) Draw and label the urinogenital system in a human male                   (6)
    (c) Describe the secondary sexual characteristics in human adults          (6)

3. (a) Draw a labeled diagram of a cross section in a seminiferous tubule   (6)
    (b) Describe the menstrual cycle in the human female                            (8)
    (c) Use a diagram to describe the structure of a human egg                   (4)

4. (a) Explain why the amount of variation in humans is much higher than in the      fruit fly which  has only 4 pairs of chromosomes                                 (4)
    (b) Draw and label a section in the testis of a human male                    (6)
    (c) Describe the process of spermatogenesis in humans                       (8)

5. (a) Draw a labeled diagram of the female reproductive system             (6)
    (b) Use a labeled diagram to show the hormonal changes during the      menstrual cycle                                                                                  (4)
    (c) Use a table to compare between the processes of spermatogenesis and      oogenesis                                                                                          (8)

6. (a) State the difference between fertilization and copulation                     (4)
    (b) Describe the events taking place after fertilization and until the process of implantation                                                                                           (8)
    (c) State the functions of the amniotic fluid                                              (6)

7. (a) Describe the structure and function of the placenta                             (8)
    (b) Describe the process of implantation and the role of HCG in humans (6)
    (c) Describe the function and structure of the umbilical cord                    (4)
   
8. (a) State and describe briefly the three stages of birth                              (4)
    (b) Draw a labeled diagram of the baby in the uterus                               (6)
    (c) Discuss the process of amniocentesis and its uses                               (8)

9. (a) Discuss some ethical issues concerning contraception                     (4)
      (b) Discuss the process of CVS (Chorionic Villi Sampling) and its uses (7)
      (c) Discuss the process and the need for invitro fertilization (IVF) in
           humans                                                                                        (7)    

10. (a) Discuss some ethical issues concerning test tube babies                   (4)
      (b) Explain how identical and non identical twins are produced in
           humans                                                                                           (6)
      (c) Explain the hormonal control of sexual maturity in human males        (8)