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-Circular muscles contract and radial muscles relax
-Pupil becomes small to allow less light into the eye
ericmunguti answered the question on October 9, 2018 at 05:38
- What changes occur in the eye if it changes from observing an object at a distance to one at a closer range?(Solved)
What changes occur in the eye if it changes from observing an object at a distance to one at a closer range?
Date posted: October 9, 2018. Answers (1)
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What is a conditioned reflex?
Date posted: October 9, 2018. Answers (1)
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junction.(Solved)
Briefly describe the transmission of a nervous impulse across a neuro-muscular
junction.
Date posted: October 9, 2018. Answers (1)
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Describe the structure and function of sensory neuron.
Date posted: October 9, 2018. Answers (1)
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Draw the structure of a motor neurone.
Date posted: October 9, 2018. Answers (1)
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What are the functions of the central nervous system?
Date posted: October 9, 2018. Answers (1)
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Name the main systems for coordination in animals.
Date posted: October 9, 2018. Answers (1)
- The diagram below represents growing seedlings which were subjected to unilatera llight at the beginning of an experiment. (i) State the results of P, Q and R...(Solved)
The diagram below represents growing seedlings which were subjected to unilateral light at the beginning of an experiment.
(i) State the results of P, Q and R after 5 days.
(ii) Account for your results in (i) above
(iii) If the tin foil were removed from the tip of seedling R, what results would be observed after 2 days.
(iv) State the expected results after 3 days if the boxes were removed.
Date posted: October 9, 2018. Answers (1)
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State the ways in which tropisms are important to plants.
Date posted: October 9, 2018. Answers (1)
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Explain the various types of tropism in plants.
Date posted: October 9, 2018. Answers (1)
- Define the term tropism(Solved)
Define the term tropism
Date posted: October 9, 2018. Answers (1)
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What causes tactic responses?
Date posted: October 9, 2018. Answers (1)
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What are tactic responses?
Date posted: October 9, 2018. Answers (1)
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List the examples of external stimuli to organisms.
Date posted: October 9, 2018. Answers (1)
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Explain the significance of mutation in evolution.
Date posted: October 8, 2018. Answers (1)
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(Solved)
What is special creation?
Date posted: October 8, 2018. Answers (1)
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State the importance of sex linkage.
Date posted: October 8, 2018. Answers (1)
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How is sex determined in human beings?
Date posted: October 8, 2018. Answers (1)
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(Solved)
Explain the inheritance of Rhesus factor (Rh) in human beings.
Date posted: October 8, 2018. Answers (1)
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Explain the inheritance of ABO blood groups
Date posted: October 8, 2018. Answers (1)