a) Thigmotropism/haptotropism
b) The part of the stem in contact with the tree trunk has lower auxin content than the outer part;
High concentration of auxin on the outer part away from the plant promotes faster growth of this side causing the stem of the plant to grow or coil round the tree trunk.
sharon kalunda answered the question on March 22, 2019 at 11:13
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A cell organelle can be thought of as a “bag” full of “liquid”, the “liquid” being the “background” substance that holds other structures within the...
(Solved)
A cell organelle can be thought of as a “bag” full of “liquid”, the “liquid” being the “background” substance that holds other structures within the “bag”. Distinguish between the “background” substance of a mitochondria and that of a chloroplast.
Date posted:
March 22, 2019
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Answers (1)
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State two characteristics of Eukaryotes.
(Solved)
State two characteristics of Eukaryotes.
Date posted:
March 22, 2019
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Answers (1)
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State three features that a grasshopper, a crab, a spider and a millipede have in common.
(Solved)
State three features that a grasshopper, a crab, a spider and a millipede have in common.
Date posted:
March 22, 2019
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Answers (1)
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The diagram below shows a section of a dicotyledonous stem.
(Solved)
The diagram below shows a section of a dicotyledonous stem.
Name the type of cells found in part labeled E.
Date posted:
March 22, 2019
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Answers (1)
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In what form is carbon IV oxide transported in blood?
(Solved)
In what form is carbon IV oxide transported in blood?
Date posted:
March 22, 2019
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Answers (1)
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State the importance of each of the following features in animals;
a) Solid food being broken down into small pieces.
b) Presence of caecum in herbivorous mammals.
(Solved)
State the importance of each of the following features in animals;
a) Solid food being broken down into small pieces.
b) Presence of caecum in herbivorous mammals.
Date posted:
March 22, 2019
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Answers (1)
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Name the disease characterized by
i)Glycosuria
ii)Diuresis
(Solved)
Name the disease characterized by
i)Glycosuria
ii)Diuresis
Date posted:
March 22, 2019
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Answers (1)
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State two ways in which skeletal muscles fibres are adapted to their function.
(Solved)
State two ways in which skeletal muscles fibres are adapted to their function.
Date posted:
March 22, 2019
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Answers (1)
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State two measures that can be taken to control infection of man by protozoan parasites.
(Solved)
State two measures that can be taken to control infection of man by protozoan parasites.
Date posted:
March 22, 2019
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Answers (1)
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State the changes that occur in a nerve axon to produce an action potential.
(Solved)
State the changes that occur in a nerve axon to produce an action potential.
Date posted:
March 22, 2019
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Answers (1)
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Distinguish between identical twins and fraternal twins.
(Solved)
Distinguish between identical twins and fraternal twins.
Date posted:
March 22, 2019
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Answers (1)
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State function of the following in seed germination. (i) Water (ii) Enzymes (iii) Oxygen
(Solved)
State function of the following in seed. Germination.
i) Water
ii) Enzymes
iii) Oxygen
Date posted:
March 22, 2019
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Answers (1)
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Name the fins that prevent the following movements of fish during swimming.
(i) Yawing
(ii) Pitching
(iii) Rolling
(Solved)
Name the fins that prevent the following movements of fish during swimming.
(i) Yawing
(ii) Pitching
(iii) Rolling
Date posted:
March 22, 2019
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Answers (1)
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Write the types of gene mutation represented by the following analogues.
(i) Intended message BRING THERMOS ON OUTING
Actual message BRING MOTHERS ON OUTING
Type ......................................................
(ii) Intended message...
(Solved)
Write the types of gene mutation represented by the following analogues.
(i) Intended message BRING THERMOS ON OUTING
Actual message BRING MOTHERS ON OUTING
Type ......................................................
(ii) Intended message PLEASE SAY WHERE YOU ARE
Actual message PLEASE STAY WHERE YOU ARE
Type ......................................................
Date posted:
March 22, 2019
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Answers (1)
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Use the diagram below to answer the questions that follow.
(Solved)
Use the diagram below to answer the questions that follow.
(a) Name structure labelled Y.
(b) (i) State the agent of dispersal for the structure above.
(ii) Give a reason for your answer in b(i) above.
Date posted:
March 22, 2019
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Answers (1)
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What happens when respiration exceeds photosynthesis in the guard cells of terrestrial plants?
(Solved)
What happens when respiration exceeds photosynthesis in the guard cells of terrestrial plants?
Date posted:
March 22, 2019
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Answers (1)
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Two populations of the same species of birds were separated over a long period of time by an ocean. Both populations initially fed on insects...
(Solved)
Two populations of the same species of birds were separated over a long period of time by an ocean. Both populations initially fed on insects only but later it was observed that one population fed entirely on fruits and seeds although insects were available. Name;
(a) The type of isolation.
(b) The type of evolutionary change.
(c) What are vestigial structures?
(d) Name one vestigial structure in man.
Date posted:
March 21, 2019
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Answers (1)
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Eight potato cylinder of the same size were used to investigate a certain physiological process. Four of the potato cylinders were placed in solution S....
(Solved)
Eight potato cylinder of the same size were used to investigate a certain physiological process. Four of the potato cylinders were placed in solution S. The other four potato cylinders were placed in solution T. After 2 hours, the potato cylinders from solution S were found to longer and stiff, while those from solution T were found to be shorter and flexible. Explain the
results in solution S and T.
(b) Distinguish between active transport and diffusion.
Date posted:
March 21, 2019
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Answers (1)
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Why is the pancreas considered a dual gland?
(Solved)
Why is the pancreas considered a dual gland?
Date posted:
March 21, 2019
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Answers (1)
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List two enzymes that are secreted in their precursor forms.
(Solved)
List two enzymes that are secreted in their precursor forms.
Date posted:
March 21, 2019
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Answers (1)