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Science · 2024 · 3 marks
CBSE 2024 · Region 5 · Set 1 · Q31
(a) Study the diagram given below and answer the questions that follow: (i) Name the defect of vision depicted in this diagram stating the part of…
Study the diagram given below and answer the questions that follow:
(i)
Name the defect of vision depicted in this diagram stating the part of the eye responsible for this condition.
(ii)
List two causes of this defect.
(iii)
Name the type of lens used to correct this defect and state its role in this case.
What is dispersion of white light ? State its cause. Draw a diagram to show dispersion of a beam of white light by a glass prism.
Marking-scheme solution
(a) •All Plants Tall
-Gene combination: Tt
(b) It is a recessive trait / it cannot be expressed in presence of dominant trait.
(c) Tall : Short $\displaystyle 3$:$\displaystyle 1$
Conclusion: Tall trait is dominant and short trait is recessive.
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CBSE Class 10 Science past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.