- Presence of turgid parenchyma cells in the petiole, spongy mesophyl and palisade cells.
- Rigid mid rib that holds leaf out/ spread it out.
- Lignified xylem vessels and tracheid forming rich network of veins.
johnmulu answered the question on May 24, 2017 at 13:51
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State three ways by which plants compensate for lack of ability to move from one place to another.
(Solved)
State three ways by which plants compensate for lack of ability to move from one place to another.
Date posted:
May 24, 2017
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Answers (1)
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What makes young herbaceous plant remain upright?
(Solved)
What makes young herbaceous plant remain upright?
Date posted:
May 24, 2017
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Answers (1)
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State the importance of tactic response among some members of kingdom protista.
(Solved)
State the importance of tactic response among some members of kingdom protista.
Date posted:
May 24, 2017
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Answers (1)
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The diagram below represents the transverse section of the spinal cord.
(Solved)
The diagram below represents the transverse section of the spinal cord.
(a) Name the part labelled H.
(b) State two functions of the fluid found in the parts labelled J.
(c) Give a reason for the colour of white matter.
Date posted:
May 24, 2017
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Answers (1)
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The diagram illustrates a nerve cell.
(Solved)
The diagram illustrates a nerve cell.
(a) Name the type of nerve cell illustrated.
(b) Give a reason for your answer in (a) above
(c) Identify the part labelled J
Date posted:
May 24, 2017
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Answers (1)
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State three differences between tactic and tropic responses.
(Solved)
State three differences between tactic and tropic responses.
Date posted:
May 24, 2017
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Answers (1)
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The diagram below shows how the iris and pupil of a human eye appear under different conditions.
(Solved)
The diagram below shows how the iris and pupil of a human eye appear under different conditions.
(a) Name the structures labeled X and Y.
(b) (i) State the condition that leads to the change in appearance shown in the diagram labeled B.
(ii) Describe the changes that leads to the appearance of the iris and pupil as shown in the diagram labeled B.
(iii) What is the s
Date posted:
May 24, 2017
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Answers (1)
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(a) Where in the human body are relay neurons found
(b) The diagram below represents a neurone
(Solved)
(a) Where in the human body are relay neurons found
(b) The diagram below represents a neurone
(i) Name the neurone
(ii) Name the parts labeled P and Q
(c) State a function of myelin sheath
Date posted:
May 24, 2017
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Answers (1)
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State the importance of tactic response among some members of kingdom protista.
(Solved)
State the importance of tactic response among some members of kingdom protista.
Date posted:
May 24, 2017
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Answers (1)
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The diagram below shows surface view of a human brain.
(Solved)
The diagram below shows surface view of a human brain.
(i) Name the parts labeled B and C.
(ii) State what would happen if the part labeled B was damaged.
Date posted:
May 19, 2017
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Answers (1)
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In an experiment to investigate a plant response, the set up shown in the diagram below was used.
(Solved)
In an experiment to investigate a plant response, the set up shown in the diagram below was used.
(a) Name the type of response that was being investigated.
(b) If the Klinostat was not rotating:
(i) State the observations that would be made on the seedlings after three days;
(ii) Explain the observations in (b)(i) above.
(c) If the experiment was repeated with the Klinostat roting:
(i) State the observation that was made on the seedlings after three days;
(ii) Give a reason for the observation made on the seedlings
Date posted:
May 19, 2017
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Answers (1)
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The diagram below illustrates a response by a certain plant.
(Solved)
The diagram below illustrates a response by a certain plant.
(a) Name the type of response.
(b) Explain how the response illustrated above occurs.
Date posted:
May 19, 2017
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Answers (1)
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State one survival value for each of the following plants:
(a) Thigmotropism in stems;
(b) Geotropism in roots
(Solved)
State one survival value for each of the following plants:
(a) Thigmotropism in stems;
(b) Geotropism in roots
Date posted:
May 19, 2017
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Answers (1)
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A response exhibited by a certain plant tendril is illustrated below
(Solved)
A response exhibited by a certain plant tendril is illustrated below
(a) (i) Name the type of response
(ii) Explain how the response named in (a)(i) above occurs
(b) What is the importance of tactic response to microscopic plants?
Date posted:
May 19, 2017
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Answers (1)
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During a lesson, students observed the structure of bat, cat and human forelimbs to determine their evolution relationship.
(Solved)
During a lesson, students observed the structure of bat, cat and human forelimbs to determine their evolution relationship.
(a) State the name given to the structure of the limbs observed by the students.
(b) Name the type of evolution illustrated by the structure of the limbs observed.
(c) What evidence of evolution is illustrated by the limbs?
(d) State the significance of the type of evolution illustrated by the limbs.
Date posted:
May 19, 2017
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Answers (1)
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State two advantages of natural selection to organisms.
(Solved)
State two advantages of natural selection to organisms.
Date posted:
May 13, 2017
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Answers (1)
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Give a reason why it is only mutation in genes of gametes that can influence evolution.
(Solved)
Give a reason why it is only mutation in genes of gametes that can influence evolution.
Date posted:
May 13, 2017
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Answers (1)
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State two characteristics that researchers select in breeding programme.
(Solved)
State two characteristics that researchers select in breeding programme.
Date posted:
May 13, 2017
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Answers (1)
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In a breeding experiment, plants with red flowers were crossed. They produced 123 plants with red flowers and 41 with white flowers
(Solved)
In a breeding experiment, plants with red flowers were crossed. They produced 123 plants with red flowers and 41 with white flowers
(a) Identify the recessive character. give a reason
(b) What was the genotype of the plants that gave rise to the plants with red and white flowers?
(c) If the white flowers were selfed, what would be the genotypes of their offspring?
Date posted:
May 13, 2017
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Answers (1)
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State three factors that contribute to the deceleration phase in the population phase in the population curve of an organism.
(Solved)
State three factors that contribute to the deceleration phase in the population phase in the population curve of an organism.
Date posted:
May 12, 2017
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Answers (1)