Get premium membership and access questions with answers, video lessons as well as revision papers.
(a)(i)Homologous structure
(ii)Divergent evolution
(b)Explain the role of environment in directing phenotypic changes
Tries to explain the occurrence of vestigial structures
isaacmuthini answered the question on October 6, 2017 at 08:03
- (a)Name the tissue that is responsible for secondary thickening in plants.
(b)Explain how the tissue named in (a) above gives rise to secondary xylem and...(Solved)
(a)Name the tissue that is responsible for secondary thickening in plants.
(b)Explain how the tissue named in (a) above gives rise to secondary xylem and secondary phloem.
Date posted: October 6, 2017. Answers (1)
- (i)Give two examples of sex linked trait in humans on Y-chromosome.(ii)colour blindness is a sex linked trait that is more common in males that in...(Solved)
(i)Give two examples of sex linked trait in humans on Y-chromosome.
(ii)colour blindness is a sex linked trait that is more common in males that in females.Explain
Date posted: October 6, 2017. Answers (1)
- (a)What prevents blood in veins from flowing backward?
(b)state three ways in which the red blood cells are structurally adapted to their function (Solved)
(a)What prevents blood in veins from flowing backward?
(b)state three ways in which the red blood cells are structurally adapted to their function
Date posted: October 6, 2017. Answers (1)
- Explain why the following characteristics are essential to living organisms:
(a)Respiration
(b)Reproduction(Solved)
Explain why the following characteristics are essential to living organisms:
(a)Respiration
(b)Reproduction
Date posted: October 6, 2017. Answers (1)
- Which part of the brain is responsible for:
(a)Controlling the rate of breathing
(b)Detecting changes in internal temperature(Solved)
Which part of the brain is responsible for:
(a)controlling the rate of breathing
(b)Detecting changes in internal temperatures
Date posted: October 6, 2017. Answers (1)
- (a)Where does glycolysis take place in a cell?(b)Name the compound formed during glycolysis.(c)If oxygen is absent in a cell,what product are obtained in:(i)Animals(ii)Plants(Solved)
(a)Where does glycolysis take place in a cell?
(b)Name the compound formed during glycolysis.
(c)If oxygen is absent in a cell,what product are obtained in:
(i)Animals
(ii)Plants
Date posted: October 6, 2017. Answers (1)
- (a)State two ways in which meiosis is important during sexual reproduction. (b)At what stage do chromatids separate during meiosis?(Solved)
A)State two ways in which meiosis is important during sexual reproduction.
(b)At what stage do chromatids separate during meiosis?
Date posted: October 6, 2017. Answers (1)
- (a)Which of the kingdom does each of following organisms below.(i)Paramecium(ii)Liverwort (b)Name the taxon that has closely related interbreeding organisms(Solved)
(a)Which of the kingdom does each of the following organisms below.
(i)Paramecium
(ii)liverwort
(b)Name the taxon that has closely related interbreeding organisms.
Date posted: October 6, 2017. Answers (1)
- (a)Name the clinical condition that results due to deficiency of insulin in human body. (b)How can one find out from a sample of urine whether a...(Solved)
a)Name the clinical condition that results due to deficiency of insulin in human body.
b)How can one find out from a sample of urine whether a person is suffering from the condition named in (a) above
Date posted: October 6, 2017. Answers (1)
- Outline the process of inspiration and expiration(Solved)
Outline the process of inspiration and expiration
Date posted: October 6, 2017. Answers (1)
- How would one find out from a sample of urine whether a person is suffering from diabetes mellitus?(Solved)
How would one find out from a sample of urine whether a person is suffering from diabetes mellitus?
Date posted: October 5, 2017. Answers (1)
- Why does glucose not normally appear in urine even though it is filtered in the mammalian Bowman’s capsule?(Solved)
Why does glucose not normally appear in urine even though it is filtered in the mammalian Bowman’s capsule?
Date posted: October 5, 2017. Answers (1)
- How can high blood sugar level in a person be controlled?(Solved)
How can high blood sugar level in a person be controlled?
Date posted: October 5, 2017. Answers (1)
- Distinguish between diabetes mellitus and diabetes insipidus(Solved)
Distinguish between diabetes mellitus and diabetes insipidus
Date posted: October 5, 2017. Answers (1)
- Describe the role of the following hormones in homeostasis
Aldosterone(Solved)
Describe the role of the following hormones in homeostasis
Aldosterone
Adrenaline
Date posted: October 5, 2017. Answers (1)
- What is the role of blood clotting in homeostasis?(Solved)
What is the role of blood clotting in homeostasis?
Date posted: October 5, 2017. Answers (1)
- Explain the part played by antidiuretic hormone in homeostasis(Solved)
Explain the part played by antidiuretic hormone in homeostasis
Date posted: October 5, 2017. Answers (1)
- Discuss the role of the following hormones in blood sugar control (i) Insulin (ii)Glucagon(Solved)
Discuss the role of the following hormones in blood sugar control
(i) Insulin
(ii) Glucagon
Date posted: October 5, 2017. Answers (1)
- What is the biological significance of maintaining a relatively constant sugar level in a human body?(Solved)
What is the biological significance of maintaining a relatively constant sugar level in a human body?
Date posted: October 5, 2017. Answers (1)
- Explain why eating a meal with too much salt leads to production of a small volume of concentrated urine(Solved)
Explain why eating a meal with too much salt leads to production of a small volume of concentrated urine
Date posted: October 5, 2017. Answers (1)