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- i)Identify the type of ovary shown in the photographs below.
ii) Name the parts labeled K and L
iii)Identify the type of section shown in the...(Solved)
i)Identify the type of ovary shown in the photographs below.
ii) Name the parts labeled K and L
iii)Identify the type of section shown in the photographs X and Y above.
Date posted: May 27, 2019. Answers (1)
- The photographs below show different plants.
a) Name the class of the plants from which the photographs were taken.
b) Name the agent of pollination for the...(Solved)
The photographs below show different plants.
a) Name the class of the plants from which the photographs were taken.
b) Name the agent of pollination for the flowers in the photographs above.
c) State one observation on the photographs that support your answer in (b) above.
Date posted: May 27, 2019. Answers (1)
- Describe the effects of the various abiotic factors in a terrestrial ecosystem to plants.(Solved)
Describe the effects of the various abiotic factors in a terrestrial ecosystem to plants.
Date posted: May 27, 2019. Answers (1)
- Describe the role of the mammalian liver in carbohydrate metabolism.(Solved)
Describe the role of the mammalian liver in carbohydrate metabolism.
Date posted: May 27, 2019. Answers (1)
- In an experiment, lactic acid concentration was measured before, during and after exercise to determine the effect of exercise on the concentration of lactic acid...(Solved)
In an experiment, lactic acid concentration was measured before, during and after exercise to determine the effect of exercise on the concentration of lactic acid in blood. Study the data obtained and use it to answer the questions that follow.
a) Plot a graph of the concentration of lactic acid against time using a suitable scale. (6 marks)
b) From the graph:
i) Determine the period of exercise.
ii) Explain
c) i) Determine the time when oxygen debt incurred.
ii) Explain
d) i) The duration it took to pay back the oxygen debt
ii) Explain
e) Plot a hypothetical curve for oxygen intake during the experimental period on the same axes.
f) Why does lactic acid level usually continue to rise in the blood after the exercise ceases?
g) State two of effects of lactic acid on tissues.
Date posted: May 27, 2019. Answers (1)
- Name the gland associated with the secretion of aldosterone hormone.(Solved)
Name the gland associated with the secretion of aldosterone hormone.
Date posted: May 27, 2019. Answers (1)
- The diagram below is a longitudinal section of an organ in mammals.
a) Name the organ.
b) Identify the parts R and S.
c) i) State three...(Solved)
The diagram below is a longitudinal section of an organ in mammals.
a) Name the organ.
b) Identify the parts R and S.
c) i) State three differences in the structure above found in the desert rat and fish.
ii) Account for the differences stated above.
(d) Name the gland associated with the secretion of aldosterone hormone.
Date posted: May 27, 2019. Answers (1)
- The diagram below is a cross section of a portion of alimentary canal.
a) i) Which part of the alimentary canal is represented by the portion...(Solved)
The diagram below is a cross section of a portion of alimentary canal.
a) i) Which part of the alimentary canal is represented by the portion above.
ii) Give a reason for your answer in (a) (i) above.
b) i) State two functions of the part of alimentary canal represented above.
ii) Explain two structural adaptations of the part of alimentary canal represented above.
Date posted: May 27, 2019. Answers (1)
- The colour of tips of hair in Shepherd dog is controlled by a gene with three alleles B for Black, R for red and C...(Solved)
The colour of tips of hair in Shepherd dog is controlled by a gene with three alleles B for Black, R for red and C for copper.
A cross between pure breeding red and copper hair tips produce offsprings with scarlet hair tips. Crossing pure breeding
red and black hair tips yields all red offsprings. A cross between pure breeds of copper and black produce offsprings that
are all copper.
a) Comment on the inheritance of the three alleles B, R and C.
b) A dog breeder wishes to know the genotype of a dog with red hair tips. State and explain the cross needed to determine
the dog’s genotype.
c) A mother of blood group AB was married to a man of blood group B heterozygous. What is the probability that one of
their sons would be blood group A? Show your working.
Date posted: May 27, 2019. Answers (1)
- Give three types of movable joints found in mammalian skeleton.(Solved)
Give three types of movable joints found in mammalian skeleton.
Date posted: May 27, 2019. Answers (1)
- Distinguish between exocrine and endocrine glands.(Solved)
Distinguish between exocrine and endocrine glands.
Date posted: May 27, 2019. Answers (1)
- The diagram below shows an eye defect.
Using a diagram show how the defect can be corrected.(Solved)
The diagram below shows an eye defect.
Using a diagram show how the defect can be corrected.
Date posted: May 27, 2019. Answers (1)
- What is the significance of the high tail power in fish locomotion.(Solved)
What is the significance of the high tail power in fish locomotion.
Date posted: May 27, 2019. Answers (1)
- The length from tail tip to the anus in a fish is 8cm whereas that from tail tip is 24cm. Calculate the tail power of...(Solved)
The length from tail tip to the anus in a fish is 8cm whereas that from tail tip is 24cm. Calculate the tail power of the fish.
Date posted: May 27, 2019. Answers (1)
- Below is a nucleic strand.
a) Name the nucleic acid.
b) Give a reason for your answer in (a) above.
c) Write down the complimentary base...(Solved)
Below is a nucleic strand.
a) Name the nucleic acid.
b) Give a reason for your answer in (a) above.
c) Write down the complimentary base pairing the pattern in the nucleic acid formed above.
Date posted: May 27, 2019. Answers (1)
- The diagram below represents a young root and four cells which occur in different regions of the root tip labelled K, L, M
and N.
State the...(Solved)
The diagram below represents a young root and four cells which occur in different regions of the root tip labelled K, L, M
and N.
State the regions of the root tip where each of the cells A B C D occur.
Date posted: May 27, 2019. Answers (1)
- List two possible effects that are likely to occur if the maternal and foetal circulatory system were directly connected.(Solved)
List two possible effects that are likely to occur if the maternal and foetal circulatory system were directly connected.
Date posted: May 27, 2019. Answers (1)
- The diagram below shows a cell undergoing a stage in a cell division.
a) Identify the stage.
b) Give a reason for your answer in (a) above....(Solved)
The diagram below shows a cell undergoing a stage in a cell division.
a) Identify the stage.
b) Give a reason for your answer in (a) above.
Date posted: May 27, 2019. Answers (1)
- The following organisms were found in a grassland habitat.
a) Construct a pyramid representing representing the order of feeding in the grassland.
b) Describe two features...(Solved)
The following organisms were found in a grassland habitat.
a) Construct a pyramid representing representing the order of feeding in the grassland.
b) Describe two features expected along trophic levels of pyramid constructed.
Date posted: May 27, 2019. Answers (1)
- A student named cockroach as AMERICAN PERIPLANTA.
a) Identify two mistakes in the name above.
b) Write the correct name of cockroach.(Solved)
A student named cockroach as AMERICAN PERIPLANTA.
a) Identify two mistakes in the name above.
b) Write the correct name of cockroach.
Date posted: May 27, 2019. Answers (1)