CBSE-CLASS-XII SERIES Biology
Social Evolution
3 previous year questions.
Volume: 3 Ques
Yield: Medium
High-Yield Trend
3
2024 Chapter Questions 3 MCQs
01
PYQ 2024
medium
biology ID: cbse-cla
Mention one advantage and one disadvantage of amniocentesis.
02
PYQ 2024
medium
biology ID: cbse-cla
Match the following genes of the lac operon listed in column βAβ with their respective products listed in column βBβ: \begin{center}
\begin{tabular}{|c|c|}
\hline
Column A (Gene) & Column B (Product)
\hline a. βiβ gene & (i) -galactosidase
b. βzβ gene & (ii) Lac permease
c. βaβ gene & (iii) Repressor
d. βyβ gene & (iv) Transacetylase
\hline \end{tabular} \end{center} Select the correct option:
\hline a. βiβ gene & (i) -galactosidase
b. βzβ gene & (ii) Lac permease
c. βaβ gene & (iii) Repressor
d. βyβ gene & (iv) Transacetylase
\hline \end{tabular} \end{center} Select the correct option:
1
aβ(i), bβ(iii), cβ(ii), dβ(iv)
2
aβ(iii), bβ(i), cβ(iv), dβ(ii)
3
aβ(iii), bβ(i), cβ(ii), dβ(iv)
4
aβ(iii), bβ(ii), cβ(iv), dβ(i)
03
PYQ 2024
medium
biology ID: cbse-cla
The ecological pyramids may have an βuprightβ or an βinvertedβ shape. Justify with the help of suitable examples.
About Social Evolution - CBSE-CLASS-XII
Social Evolution is a vital chapter for CBSE-CLASS-XII aspirants. Mastering the concepts covered in this chapter is essential for securing a top rank.
By rigorously practicing the previous year questions associated with this chapter, you can identify high-yield topics, understand the examiner's perspective, and boost your confidence during the actual exam.
Frequently Asked Questions
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Analyzing PYQs for this specific chapter reveals the most frequently tested concepts and the typical complexity of questions, allowing you to tailor your study plan efficiently.
How to best use this analysis?
Review the topic breakdown to see which sub-topics within Social Evolution carry the most weight. Then, tackle the questions iteratively to solidify your understanding.