Get premium membership and access questions with answers, video lessons as well as revision papers.
Increases efficiency of the body movement by allowing the effect of muscle contraction to be extremely localized.Resultant localized changes in the shape of groups of segments provide the basis for swimming crawling and burrowing.
The repetition of body parts provides safety to the organisms because if one segment fails,it may not necessarily lead to fatal coscequences as there are still other segments which can compliment the functions of the failed segment.
It permits modification of certain regions of the body for specialized functions such as feeding ,locomotion and reproduction.
MR MUKONYOLE answered the question on September 24, 2017 at 14:55
- Define the following terms: (a)biosphere. (b)habitat (c)ecological niche(Solved)
Define the following terms: (a)biosphere. (b)habitat (c)ecological niche
Date posted: September 24, 2017. Answers (1)
- Explain the developmental stage of infancy and how the following factors affects them: biological,social,cultural,emotional and state the educational implications on each(Solved)
Explain the developmental stage of infancy and how the following factors affects them: biological,social,cultural,emotional and state the educational implications on each
Date posted: September 23, 2017. Answers (1)
- Name the type of muscle found in the stomach(Solved)
Name the type of muscle found in the stomach
Date posted: September 22, 2017. Answers (1)
- (a) State two ways in which some fungi are harmful to man (b) Explain what would happen to red blood cells if they are placed in...(Solved)
(a) State two ways in which some fungi are harmful to man
(b) Explain what would happen to red blood cells if they are placed in a concentrated salt solution
Date posted: September 21, 2017. Answers (1)
- Define cellular respiration. (Solved)
Give a clear overview.
Date posted: September 21, 2017. Answers (1)
- Describe the role of the following organs in excretion and homeostasis.the liver, the skin during hot environmental conditions.(Solved)
Describe the role of the following organs in excretion and homeostasis: the liver, the skin during hot environmental conditions.
Date posted: September 20, 2017. Answers (1)
- Describe the process of blood clotting in human beings(Solved)
Describe the process of blood clotting in human beings.
Date posted: September 20, 2017. Answers (1)
- Using a microscope, a student counted 55 cells across a field of view whose diameter was 6000µm. Calculate the average length of the cells....(Solved)
Using a microscope, a student counted 55 cells across a field of view whose diameter was 6000µm. Calculate the average length of the cells
Date posted: September 20, 2017. Answers (1)
- Describe how turgor pressure builds up.
(Solved)
Tugor process
Date posted: September 20, 2017. Answers (1)
- (a) State two roles of mucus in the stomach. (b) Explain how age determines a person's energy requirements.(Solved)
(a) State two roles of mucus in the stomach.
(b) Explain how age determines a person's energy requirements.
Date posted: September 20, 2017. Answers (1)
- How does excretion take place in plants?Describe the role of the human skin in homeostasis.(Solved)
How does excretion take place in plants?Describe the role of the human skin in homeostasis.
Date posted: September 20, 2017. Answers (1)
- (i)How is sex determined in man? (ii) Differentiate between sickle cell anemia and sickle cell trait. (iii) Explain why people with sickle cell trait have an adaptive survival advantage...(Solved)
(i)How is sex determined in man?
(ii) Differentiate between sickle cell anemia and sickle cell trait.
(iii) Explain why people with sickle cell trait have an adaptive survival advantage...
Date posted: September 20, 2017. Answers (1)
- (a) Describe the mechanism of gaseous exchange in plants through the lenticels. (b) Explain each of the following:the tracheoles lack spiral bands of chitin;the floor of the mouth...(Solved)
(a) Describe the mechanism of gaseous exchange in plants through the lenticels. (b) Explain each of the following:the tracheoles lack spiral bands of chitin;the floor of the mouth...
Date posted: September 20, 2017. Answers (1)
- (a) State four characteristics of fruits dispersed by animals. (b) State two roles of each of the following hormones in menstruation:l (i) luteinising hormone (ii) oestrogen.(Solved)
(a) State four characteristics of fruits dispersed by animals. (b) State two roles of each of the following hormones in menstruation: (i) luteinising hormone (ii) oestrogen.
Date posted: September 20, 2017. Answers (1)
- Why is a burning charcoal stove in a poorly ventilated room likely to cause death of the inhabitants?(Solved)
Why is a burning charcoal stove in a poorly ventilated room likely to cause death of the inhabitants?
Date posted: September 20, 2017. Answers (1)
- Name three types of transpiration(Solved)
Name three types of transpiration
Date posted: September 19, 2017. Answers (1)
- a)What is meant by seed dormancy? (b)state three causes of seed dormancy?(Solved)
a)What is meant by seed dormancy? (b)state three causes of seed dormancy?
Date posted: September 19, 2017. Answers (1)
- Outline types staining process(Solved)
Outline types staining process
Date posted: September 18, 2017. Answers (1)
- What is Biology?(Solved)
What is Biology?
Date posted: September 18, 2017. Answers (1)
- What is a gene?(Solved)
What is a gene?
Date posted: September 18, 2017. Answers (1)