a) A – medulla; B – Cortex;
b) Cortex;
Kavungya answered the question on June 17, 2019 at 06:08
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State two processes through which plants excrete their metabolic wastes.
(Solved)
State two processes through which plants excrete their metabolic wastes.
Date posted:
June 17, 2019
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Answers (1)
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The table below shows the approximate percentage concentration of various components in blood
plasma entering the kidney, glomerular filtrate and urine of a healthy human being
(a)...
(Solved)
The table below shows the approximate percentage concentration of various components in blood
plasma entering the kidney, glomerular filtrate and urine of a healthy human being
(a) Name the process responsible for the formation of glomerular filtrate
(b) What process is responsible for the absence of glucose and amino acids in urine?
(c) Explain why there are no plasma proteins in the glomerular filtrate?
Date posted:
June 17, 2019
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Answers (1)
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The table below shows description of sizes of glomeruli renal tubules of two animals which are
living in different environments
Name the likely environment in which each...
(Solved)
The table below shows description of sizes of glomeruli renal tubules of two animals which are
living in different environments
Name the likely environment in which each animal lives :
(i)Animal X
(ii) Animal Y
Date posted:
June 17, 2019
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Answers (1)
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Name the nitrogenous wastes excreted by the following organisms:-
Animal Nitrogenous Waste
(i) Desert mole
(ii)...
(Solved)
Name the nitrogenous wastes excreted by the following organisms:-
Animal Nitrogenous Waste
(i) Desert mole
(ii) Marine fish
(iii) Tilapia
Date posted:
June 17, 2019
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Answers (1)
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If the human pancreas is not functional:-(i) Name the hormone which will be deficient(ii) Name the disease the human is likely to suffer from
(Solved)
If the human pancreas is not functional:-
(i) Name the hormone which will be deficient
(ii) Name the disease the human is likely to suffer from
Date posted:
June 17, 2019
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Answers (1)
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A student mixed a sample of urine from a person with Benedict’s solution and heated, the colour
changed to orange.
(a) What was present in the urine...
(Solved)
A student mixed a sample of urine from a person with Benedict’s solution and heated, the colour
changed to orange.
(a) What was present in the urine sample?
(b) What did the student conclude on the health status of the person?
(c) Which organ in the person may not be functioning properly?
Date posted:
June 17, 2019
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Answers (1)
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Describe how ingestion of very salty food may reduce the amount of water excreted in urine.
(Solved)
Describe how ingestion of very salty food may reduce the amount of water excreted in urine.
Date posted:
June 17, 2019
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Answers (1)
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Name two substances that are not found in urine of a healthy person
(Solved)
Name two substances that are not found in urine of a healthy person
Date posted:
June 17, 2019
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Answers (1)
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Explain the following:-
i) Fresh water fish excrete ammonia
ii) Glucose is absent in urine yet present in glomerular filtrate
(Solved)
Explain the following:-
i) Fresh water fish excrete ammonia
ii) Glucose is absent in urine yet present in glomerular filtrate
Date posted:
June 17, 2019
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Answers (1)
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Explain why insecticides become ineffective against insects if used for several years in succession
(Solved)
Explain why insecticides become ineffective against insects if used for several years in succession
Date posted:
June 15, 2019
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Answers (1)
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Explain why certain drugs become ineffective in curing a disease after many years of use
(Solved)
Explain why certain drugs become ineffective in curing a disease after many years of use
Date posted:
June 15, 2019
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Answers (1)
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All insects are believed to have arisen from a common ancestor. However, modern insects differ widely in a variety of ways such as in the...
(Solved)
All insects are believed to have arisen from a common ancestor. However, modern insects differ widely in a variety of ways such as in the adaptation of their mouthparts for different modes of feeding. What kind of evolution is this?
Date posted:
June 15, 2019
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Answers (1)
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Give two factors that determine water reabsorption in the distal convoluted tubule
(Solved)
Give two factors that determine water reabsorption in the distal convoluted tubule
Date posted:
June 15, 2019
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Answers (1)
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Distinguish between the struggle for existence and survival for the fittest as used in the theory of natural selection
(Solved)
Distinguish between the struggle for existence and survival for the fittest as used in the theory of natural selection
Date posted:
June 15, 2019
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Answers (1)
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Describe how a population of grasshoppers in a given area can be estimated
(Solved)
Describe how a population of grasshoppers in a given area can be estimated
Date posted:
June 15, 2019
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Answers (1)
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Explain how food as a factor regulates the population of animals in an ecosystem
(Solved)
Explain how food as a factor regulates the population of animals in an ecosystem
Date posted:
June 15, 2019
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Answers (1)
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Apart from mere observation of actual feeding suggest two methods that can be used to determine the type of food eaten by animals
(Solved)
Apart from mere observation of actual feeding suggest two methods that can be used to determine the type of food eaten by animals
Date posted:
June 15, 2019
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Answers (1)
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A fish farmer wanted to know the number of fish in a pond. He collected 10 fish from the pond
and labeled each, by a tag...
(Solved)
A fish farmer wanted to know the number of fish in a pond. He collected 10 fish from the pond
and labeled each, by a tag label on its fin and returned the ten fish to the pond to mix with
other fish . When he later collected 50 fish from the pond, he found only four of them had labels
a) Estimate the total number of fish in the pond (show your workings)
b) What two assumptions are being made in this methods of estimating population
Date posted:
June 15, 2019
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Answers (1)
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An investigation was carried out on a terrestrial ecosystem. The population sizes and species biomass were determined and recorded as shown in the table...
(Solved)
An investigation was carried out on a terrestrial ecosystem. The population sizes and species
biomass were determined and recorded as shown in the table
a) If these organisms had a feeding relationship, construct a simple food chain involving all the organisms
b) Construct pyramid of numbers using the data provided above
c) State one disadvantage of using pyramid of number in expressing feeding relationships in ecological ecosystem
Date posted:
June 15, 2019
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Answers (1)
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In a certain school Form three class did an experiment to estimate the number of Tilapia
in their fish pond. 725 tilapia were netted marked and...
(Solved)
In a certain school Form three class did an experiment to estimate the number of Tilapia
in their fish pond. 725 tilapia were netted marked and released.
a) State the method used in this exercise
b) Calculate the tilapia population.
c) State two assumptions made by the students during the investigation
Date posted:
June 15, 2019
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Answers (1)