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(a)
T- Gill
U – Ventricle
V – Atrium
(b) Low pressure system;
- since blood is only pumped once; hence low rate of distribution of oxygen and nutrients to tissues;
(c)
-Blood flows through the heart once for every complete circulation
-Blood flows at low pressure around the body.
sharon kalunda answered the question on September 13, 2019 at 10:24
- The table below shows approximate numbers of organisms found in an ecosystem.(Solved)
The table below shows approximate numbers of organisms found in an ecosystem.
(a) Using the information in the table draw a pyramid of numbers.
(b) Explain what would happen to the other organisms if all the lizards suddenly died off.
Date posted: September 13, 2019. Answers (1)
- The photographs labelled K, L, M, N and P below are bones obtained from a mammal. For each of the bones K, L and M,...(Solved)
The photographs labelled K, L, M, N and P below are bones obtained from a mammal. For each of the bones K, L and M, two views are shown.
(a) Identify the bones and name the part of the mammalian body from which each was obtained. (5mks)
(b) Name the parts labelled 1, 2 and 4.
(c) Name the bones that form a joint with bone K at its anterior and posterior end
and in each case name the type of joint they form.
Anterior end.
(i) Bone(s)
(ii) Type of joint
Posterior end.
(i) Bone(s)
(ii) Type of joint
(d) State the function of the structure labelled 6 in bone P.
Date posted: September 13, 2019. Answers (1)
- Name the hard body covering found in organisms of the phylum arthropoda.(Solved)
Name the hard body covering found in organisms of the phylum arthropoda.
Date posted: September 13, 2019. Answers (1)
- Write the kingdoms to which the following organisms belong.
Plasmodium
Bat
Yeast(Solved)
Write the kingdoms to which the following organisms belong.
Plasmodium
Bat
Yeast
Date posted: September 13, 2019. Answers (1)
- A student collected a plant with the following features:
-Vascular bundles in the stem were scattered with no cambium.
-Fibrous root system.
Name the sub-division and the class...(Solved)
A student collected a plant with the following features:
-Vascular bundles in the stem were scattered with no cambium.
-Fibrous root system.
Name the sub-division and the class to which the above plant belonged.
Sub-division
Class
Date posted: September 13, 2019. Answers (1)
- Name one waste product that is transported in the blood but not removed by the kidneys.(Solved)
Name one waste product that is transported in the blood but not removed by the kidneys.
Date posted: September 13, 2019. Answers (1)
- Arrange the following nitrogenous waste products in order of decreasing toxicity:
urea, uric acid and ammonia.(Solved)
Arrange the following nitrogenous waste products in order of decreasing toxicity:
urea, uric acid and ammonia.
Date posted: September 13, 2019. Answers (1)
- Name two substances that are excreted through diffusion process in plants.(Solved)
Name two substances that are excreted through diffusion process in plants.
Date posted: September 13, 2019. Answers (1)
- Explain why the garden pea plant was preferred by Gregor Mendel in his crossing experiments.(Solved)
Explain why the garden pea plant was preferred by Gregor Mendel in his crossing experiments.
Date posted: September 13, 2019. Answers (1)
- Potato cylinders were weighed and kept in distilled water overnight. They were then reweighed.(Solved)
Potato cylinders were weighed and kept in distilled water overnight. They were then reweighed.
(a) Calculate the average mass of the potato cylinders at the end of the experiments.(Show your working).
(b) Explain why the mass of the cylinders had increased.
Date posted: September 13, 2019. Answers (1)
- What is the importance of fixation in preparation of temporary slide?(Solved)
What is the importance of fixation in preparation of temporary slide?
Date posted: September 13, 2019. Answers (1)
- Give one structural difference and similarity between a mitochondrion and a chloroplast.(Solved)
Give one structural difference and similarity between a mitochondrion and a chloroplast.
Date posted: September 13, 2019. Answers (1)
- Explain why athletes practicing at high altitude zones have a higher number red blood cells than those at sea level.(Solved)
Explain why athletes practicing at high altitude zones have a higher number red blood cells than those at sea level.
Date posted: September 13, 2019. Answers (1)
- Below is across section of a fruit.(Solved)
Below is across section of a fruit.
(a) Name the type of placentation shown.
(b) Identify the parts labelled A.
Date posted: September 13, 2019. Answers (1)
- Explain why emulsification is not a chemical digestion.(Solved)
Explain why emulsification is not a chemical digestion.
Date posted: September 13, 2019. Answers (1)
- The diagram below shows a transverse section of a spinal cord.(Solved)
The diagram below shows a transverse section of a spinal cord.
Name the parts labelled A – D.
Date posted: September 13, 2019. Answers (1)
- Name the structure for gaseous exchange in
(a) Tadpole
(b) Grasshopper(Solved)
Name the structure for gaseous exchange in
(a) Tadpole
(b) Grasshopper
Date posted: September 13, 2019. Answers (1)
- The table below shows organisms in a given habitat.(Solved)
The table below shows organisms in a given habitat.
a) Calculate the total number of producers.
(b) Name the organisms that could be both primary and secondary consumers.
(c) Name the process through which energy from the sun is incorporated in the ecosystem.
(d) State why decomposers are not included in the food chain.
Date posted: September 13, 2019. Answers (1)
- Study the diagram below and answer the questions that follow:
(a) Identify the above apparatus.
(b) State the function of the above apparatus.
(c) Name an apparatus...(Solved)
Study the diagram below and answer the questions that follow:
(a) Identify the above apparatus.
(b) State the function of the above apparatus.
(c) Name an apparatus that can be used for catching insects on barks of trees or rock surfaces.
(d) Name the branch of Biology that deals with the study of birds.
Date posted: September 13, 2019. Answers (1)
- Below are photographs labeled B and C of organs obtained from different animals. The organs perform similar functions.Examine them and answer the questions that follow.(Solved)
Below are photographs labeled B and C of organs obtained from different animals. The organs perform similar functions.Examine them and answer the questions that follow.
a) Name the organs B and C.
b) State the common functions performed by the organs stated above.
c) Name the parts labeled B1, B2 and B3 in the photograph B.
d) i) Identify the parts labeled K1,K2,and K3 in photography C
ii) Using observable features; state how the parts labeled K1 and K3 you identified in d (i) above are adapted to their function.
Date posted: September 13, 2019. Answers (1)