(a) an increase in external environmental temperature (linearly) increases the body temperature of animal A.
(b) (i) Poikilotherms / exotherms ;
(ii) Homoiotherms / endotherms;
sharon kalunda answered the question on May 29, 2019 at 10:06
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(a) From the table, explain why after age 8 males require more energy than females....(Solved)
The table below shows the energy use per day in kilojoule.
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Date posted: May 29, 2019. Answers (1)
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(b) Name the digestive juice C.
(c) Name the gland that secrete digestive juice B.
Date posted: May 29, 2019. Answers (1)
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Date posted: May 29, 2019. Answers (1)
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a) Using a suitable scale plot a graph of % germination against temperature
b)...(Solved)
The percentage germination of certain seeds at different temperature was determined as follows.
a) Using a suitable scale plot a graph of % germination against temperature
b) ccount for % germination at
i) 0°C
ii) 30°C
iii) 50°C
Date posted: May 29, 2019. Answers (1)
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Date posted: May 29, 2019. Answers (1)
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one end...(Solved)
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The table below shows the results of the experiment.
i) Why were the woodlice left there for five minutes before the pack paper was placed on the tube?
ii) Complete the line graph on the grid below to show the number of woodlice found in the dark at each minute during the
experiment. The results for woodlice in light have already been plotted.
iii) State a conclusion which can be drawn from the results of this experiment.
c) A student repeated this experiment.
i) How could the design be changed to make the results more reliable?
ii) State one environmental factor which would be kept the same to allow a valid comparison with the first experiment.
Date posted: May 29, 2019. Answers (1)
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In an investigation, young plant shoots were exposed to 48hrs of light from above or from one side only. Their growth responses are shown in the diagrams below.
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ii) Account for the growth response of shoot B after 48 hours.
Date posted: May 29, 2019. Answers (1)
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a) Identify the property of enzymes being investigated in tubes...(Solved)
A group of students set up the following experiments to investigate the factors that affect enzymes
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b) After 3 hours the students tested the content in the four tubes for starch. They obtained the following results in tube 2, 3 and 4.
Tube 2 - Blue-black colour
Tube 3 - Brown colour of iodine remained
Tube 4 - Blue black colour.
Account for the results obtained in tube 3 and 4.
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Date posted: May 29, 2019. Answers (1)
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Date posted: May 29, 2019. Answers (1)
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i) Suggest its agent of pollination.
ii) Name the type of ovary shown above.
iii) Explain one observable...(Solved)
Below is a simplified diagram of a flower.
i) Suggest its agent of pollination.
ii) Name the type of ovary shown above.
iii) Explain one observable mechanism that will hinder self pollination and fertilization in the above flower.
Date posted: May 29, 2019. Answers (1)
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a) Name the structure.
b) State two observable ways in which the structure is suited to...(Solved)
The diagram below represents part of a mammalian respiratory system.
a) Name the structure.
b) State two observable ways in which the structure is suited to its function.
Date posted: May 29, 2019. Answers (1)