Secretion is the removal of important biological substances (eg hormones and enzymes) from one organ to the other.
Excretion is the elimination of waste products of metabolism from the body.
Kavungya answered the question on October 1, 2019 at 07:55
-
Explain the disadvantages of using acarides in tick control
(Solved)
Explain the disadvantages of using acarides in tick control
Date posted:
October 1, 2019
.
Answers (1)
-
Name two methods that would be used to measure growth in plants.
(Solved)
Name two methods that would be used to measure growth in plants.
Date posted:
October 1, 2019
.
Answers (1)
-
State two precautions you would observe when preparing a bacteria culture in the laboratory.
(Solved)
State two precautions you would observe when preparing a bacteria culture in the laboratory.
Date posted:
October 1, 2019
.
Answers (1)
-
Using a punnet square, explain why the view that “some women have a tendency to giving birth to girl or boy babies only” has...
(Solved)
Using a punnet square, explain why the view that “some women have a tendency to giving birth to girl or boy babies only” has no scientific foundation.
Date posted:
October 1, 2019
.
Answers (1)
-
In maize, yellow colour is dominant over White colour. Using letter W to denote gene for maize colour, show how one would establish whether a...
(Solved)
In maize, yellow colour is dominant over White colour. Using letter W to denote gene for maize colour, show how one would establish whether a given sample of yellow maize is pure or a hybrid.
Date posted:
October 1, 2019
.
Answers (1)
-
Explain how submerged hydrophytes obtain their oxygen for respiration at night
(Solved)
Explain how submerged hydrophytes obtain their oxygen for respiration at night
Date posted:
October 1, 2019
.
Answers (1)
-
Name the process which occurs in mammalian liver that lead to formation of urea
(Solved)
Name the process which occurs in mammalian liver that lead to formation of urea
Date posted:
October 1, 2019
.
Answers (1)
-
State the functional differences between pulmonary artery and pulmonary vein.
(Solved)
State the functional differences between pulmonary artery and pulmonary vein.
Date posted:
October 1, 2019
.
Answers (1)
-
Explain how a genetic trait is inherited in a mammal.
(Solved)
Explain how a genetic trait is inherited in a mammal.
Date posted:
October 1, 2019
.
Answers (1)
-
Explain why a breastfeeding woman generally require more protein in her daily diet than a normal woman.
(Solved)
Explain why a breastfeeding woman generally require more protein in her daily diet than a normal woman.
Date posted:
October 1, 2019
.
Answers (1)
-
What is the importance of crossing–over in cell division?
(Solved)
What is the importance of crossing–over in cell division?
Date posted:
September 30, 2019
.
Answers (1)
-
State four differences between mitotic and meiotic divisions.
(Solved)
State four differences between mitotic and meiotic divisions.
Date posted:
September 30, 2019
.
Answers (1)
-
Mention two pieces of evidence which are advanced to support the view that end, products of photosynthesis are translocated in phloem.
(Solved)
Mention two pieces of evidence which are advanced to support the view that end, products of photosynthesis are translocated in phloem.
Date posted:
September 30, 2019
.
Answers (1)
-
State two disadvantages that organisms with small surface area to volume ratio
experience over those with larger.
(Solved)
State two disadvantages that organisms with small surface area to volume ratio
experience over those with larger.
Date posted:
September 30, 2019
.
Answers (1)
-
Give the formula used to calculate surface area to volume ratio of an organism.
(Solved)
Give the formula used to calculate surface area to volume ratio of an organism.
Date posted:
September 30, 2019
.
Answers (1)
-
Give the advantage of using low power magnification instead of high power when viewing specimens under a microscope.
(Solved)
Give the advantage of using low power magnification instead of high power when viewing specimens under a microscope.
Date posted:
September 30, 2019
.
Answers (1)
-
State the importance of egg being larger than sperm in vertebrates.
(Solved)
State the importance of egg being larger than sperm in vertebrates.
Date posted:
September 30, 2019
.
Answers (1)
-
Give three features in Irish potato tube that qualify it to be a stem tuber.
(Solved)
Give three features in Irish potato tube that qualify it to be a stem tuber.
Date posted:
September 30, 2019
.
Answers (1)
-
Name the process which occurs in root hair cells that lead to absorption of water.
(Solved)
Name the process which occurs in root hair cells that lead to absorption of water.
Date posted:
September 30, 2019
.
Answers (1)
-
Describe how various endo-parasites are adapted for survival in their hosts.
(Solved)
Describe how various endo-parasites are adapted for survival in their hosts.
Date posted:
September 30, 2019
.
Answers (1)