Get premium membership and access questions with answers, video lessons as well as revision papers.
(a) Chorion
(b) i) Umbilical arteries, umbilical veins/ capillaries
(ii) More food nutrients; more oxygen in veins; less food nutrients; more excretory products in arteries
(c) - Highly vascularized; large surface area
- Presence of secretory cells
d) Cushion or acts as a shock absorber of the foetus
johnmulu answered the question on May 12, 2017 at 06:32
- (a) State two disadvantages of sexual reproduction in animals.
(b) State two functions of the placenta in mammals (Solved)
(a) State two disadvantages of sexual reproduction in animals.
(b) State two functions of the placenta in mammals
Date posted: May 12, 2017. Answers (1)
- State three differences between the end products of mitosis and meiosis(Solved)
State three differences between the end products of mitosis and meiosis
Date posted: May 9, 2017. Answers (1)
- Explain why (a) Mammalian testes are located to hang outside the body.
(b) Four months after fertilization, ovaries can be removed from a human female without terminating pregnancy(Solved)
Explain why (a) Mammalian testes are located to hang outside the body.
(b) Four months after fertilization, ovaries can be removed from a human female without terminating pregnancy
Date posted: May 9, 2017. Answers (1)
- State two functions of the placenta in mammals. (Solved)
State two functions of the placenta in mammals.
Date posted: May 9, 2017. Answers (1)
- How is the human sperm cell structurally specialized? (Solved)
How is the human sperm cell structurally specialized?
Date posted: May 9, 2017. Answers (1)
- Name two substances that leaves the foetal blood through the placenta. (Solved)
Name two substances that leaves the foetal blood through the placenta.
Date posted: May 9, 2017. Answers (1)
- What name is given to a group of hormones that controls the development of secondary sexual characteristics in a human male(Solved)
What name is given to a group of hormones that controls the development of secondary sexual characteristics in a human male
Date posted: May 9, 2017. Answers (1)
- The diagram below represents a human reproductive organ. (Solved)
The diagram below represents a human reproductive organ.
(i) Explain two adaptations of the structure labeled L to its functions
(ii) Explain the role of the gland labeled K.
Date posted: May 9, 2017. Answers (1)
- (i) Name two reproductive hormones secreted by the pituitary gland in women
(ii) State one function of each of the hormones named in (b) (i) above. (Solved)
(i) Name two reproductive hormones secreted by the pituitary gland in women
(ii) State one function of each of the hormones named in (b) (i) above.
Date posted: May 9, 2017. Answers (1)
- Name the gamete cells that are produced by the ovaries (Solved)
Name the gamete cells that are produced by the ovaries
Date posted: May 9, 2017. Answers (1)
- What is the function of the following structures in the human reproductive organs (a) Fallopian tubes. (b) Epididymis. (c) Scrotal sac (Solved)
What is the function of the following structures in the human reproductive organs (a) Fallopian tubes. (b) Epididymis. (c) Scrotal sac
Date posted: May 9, 2017. Answers (1)
- State two advantages of internal fertilization in humans. (Solved)
State two advantages of internal fertilization in humans.
Date posted: May 9, 2017. Answers (1)
- (a)Pregnancy continues if the ovary of an expectant mother is removed after the 4 th month. Explain.
(b) What is the role of the testes in the mammalian reproductive systems.
(Solved)
(a)Pregnancy continues if the ovary of an expectant mother is removed after the 4 th month. Explain.
(b) What is the role of the testes in the mammalian reproductive systems.
Date posted: May 9, 2017. Answers (1)
- The figure shows changes that take place during menstrual cycle in human. (Solved)
The figure shows changes that take place during menstrual cycle in human.
(a) Name the hormone whose concentrations are represented by curves F and G.
(b) State the effects of the hormones named (a) above on the lining of the uterus.
Date posted: May 9, 2017. Answers (1)
- State a function of amniotic fluid. (Solved)
State a function of amniotic fluid.
Date posted: May 9, 2017. Answers (1)
- State the mode of asexual reproduction in yeast. (Solved)
State the mode of asexual reproduction in yeast.
Date posted: May 9, 2017. Answers (1)
- State two disadvantages of sexual reproduction in animals (Solved)
State two disadvantages of sexual reproduction in animals
Date posted: May 9, 2017. Answers (1)
- The diagram below represents a stage during cell division(Solved)
The diagram below represents a stage during cell division
(a) (i) Identify the stage of cell division
(ii) Give three reasons for your answer in (a) (i) above
(b) Name the structures labeled M.
(c) State the significance of this stage of cell division in living organisms.
Date posted: May 9, 2017. Answers (1)
- The diagram below represents human foetus in a uterus. (Solved)
The diagram below represents human foetus in a uterus.
(a) Name the part labeled S.
(b) Name two features that enable the structure labeled P carry out its function.
(c) State the role of the parts labeled R.
Date posted: May 9, 2017. Answers (1)
- (a) State two processes which occur during anaphase of mitosis
(b) What is significance of meiosis? (Solved)
(a) State two processes which occur during anaphase of mitosis
(b) What is significance of meiosis?
Date posted: May 9, 2017. Answers (1)