CBSE 12th Board Exam 2023 Biology Question Papers
#1
CBSE 10th Annual Exam 2023 Biology Question papers can be downloaded easily from the attachments.

Some sample questions that came for the exam are:

1. Which of the following seeds have remained alive for the longest period
(a) Phoenix dactylifera (b) Striga asiatica (c ) Mangifera indica (d) Yucca gigantea

2. Human settlement often leads to habitat loss which leads to fragmentation, forming smaller patches of habitats. Select the statements that describe how a small patch differs from a large patch of the same habitat.
(i) Invasive species will never be seen here.
(ii) Population of large animals decreases.
(iii) Biodiversity decreases.
(iv) Competition from surrounding habitats increases.
(a) (ii), (iii) and (iv) only
(b) (ii) and (iv) only
(c ) (i) and (iii) only
(d) (i), (ii) and (iii) only

3. (a) Explain the process of the development of a male gametophyte in an angiosperm.
(b) Why is it called a male gametophyte ?

4. Name and describe the steps involved in the technique widely used in forensics that serves as the basis of paternity testing in case of disputes.

5. Name a best known and most common autosomal aneuploid abnormality in human and write any two symptoms.

Detailed question paper can be had from the links below.


Attached Files
.pdf   CBSE 12th Board Exam 2023 Biology question paper 1.pdf (Size: 1.96 MB / Downloads: 166)
.pdf   CBSE 12th Board Exam 2023 Biology question paper 2.pdf (Size: 2.12 MB / Downloads: 174)
.pdf   CBSE 12th Board Exam 2023 Biology question paper 3.pdf (Size: 4.52 MB / Downloads: 164)
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