Name of the Board : Central Board of Secondary Education (CBSE)
Class : XII STD
Document Type : Sample Question Paper
Subject : Biology
Term : 1 and 2
Year : 2021-22
Website : https://cbseacademic.nic.in/SQP_CLASSXII_2021-22.html
CBSE XII Biology Question Paper
CBSE Students can download the Biology Sample Question Paper Term 1 and 2 for the year 2021-22 from the website of CBSE Academic.
Related / Similar Question Paper : CBSE Academic Class XII Business Studies Sample Question Paper 2021-22
Sample Question Paper For CBSE XII Biology
Section A
Section – A consists of 24 questions. Attempt any 20 questions from this section. The first attempted 20 questions would be evaluated.
1. The structure of bilobed anther consists of
A. 2 thecae, 2 sporangia
B. 4 thecae, 4 sporangia
C. 4 thecae, 2 sporangia
D. 2 thecae, 4 sporangia
2. In the figure of anatropous ovule given below, choose the correct option for the characteristic distribution of cells within the typical embryo sac Number of cells at chalazal end Number of cells at micropylar end Number of nuclei left in central cell
A 3 2 3
B 3 3 2
C 2 3 3
D 2 2 4
3. The coconut water from tender coconut is
A. cellular endosperm.
B. free nuclear endosperm.
C. both cellular and nuclear endosperm.
D. free nuclear embryo.
4. Pollen grains are well preserved as fossils because of presence of
A. sporopollenin
B. cellulose
C. lignocellulose
D. pectocellulose
5. Which of the following statements are true related to Seed X and Y? (i) Seed X is dicot and endospermic or albuminous. (ii) Seed X is dicot and non-endospermic or non-albuminous. (iii) Seed Y is monocot and endospermic or albuminous. (iv) Seed Y is monocot and non-endospermic or non-albuminous.
Choose the correct option with the respect to the nature of the seed
A. (i), (iii)
B. (ii), (iii)
C. (i), (iv)
D. (ii), (iv)
6. Which of the following statements are correct with respect to hormones secreted by placenta? (i) Placenta secretes relaxin during later stage of pregnancy. (ii) Placenta secretes high amount of FSH during pregnancy. (iii) Placenta secretes relaxin during initial stage of pregnancy. (iv) Placenta secretes hCG and hPL during pregnancy.
A. (i) and (iv)
B. (i), (ii) and (iv)
C. (iii) and (iv)
D. (ii), (iii) and (iv)
7. Figure A shows the front view of the human female reproductive system and Figure Bshows the development of a fertilized human egg cell Figure A Figure B.
Identify the correct stage of development of human embryo (Figure B) that takes place at the site X, Y and Z respectively in the human female reproductive system (Figure A).Choose the correct option from the table below:X Y Z
A Morula Fertilized egg Blastocyst
B Unfertilized egg Fertilized egg Morula
C Blastocyst Fertilized egg Unfertilized egg
D Fertilized egg Morula Blastocyst
8. Penetration of the sperm in the ovum is followed by
A. formation of first polar body.
B. completion of meiosis II.
C. first meiosis.
D. dissolution of zona pellucida.
9. The correct sequence of hormone secretion from beginning of menstruation is
A. FSH, progesterone, estrogen.
B. estrogen, FSH, progesterone.
C. FSH, estrogen, progesterone.
D. estrogen, progesterone, FSH.
10. In the dioecious aquatic plant shown, identify the characteristics of the male flowers that reach the female flowers for pollination:Size of the flower Colour of flower
Characteristic feature of pollengrain
A small brightly coloured Light weight and non-sticky
B large colourless large and sticky
C small white small, covered with mucilage
D large colourless non sticky
11. The thalamus contributes to the fruit formation in
A. banana.
B. orange.
C. strawberry.
D. guava.
Size of the flower Colour of flower Characteristic feature of pollengrain
A small brightly coloured Light weight and non-sticky
B large colourless large and sticky
C small white small, covered with mucilage
D large colourless non sticky
12. How many types of gametes would be produced if the genotype of a parent is AaBB?
A. 1
B. 2
C. 3
D. 4
13. Which of the following statements indicates parallelism in genes and chromosomes? (i) They occur in pairs (ii) They segregate during gamete formation (iii) They show linkage (iv) Independent pairs segregate independently
A. (i) and (iii)
B. (ii) and (iii)
C. (i), (ii) and (iii)
D. (i), (ii) and (iv)
Download CBSE XII Biology Question Paper
Download CBSE XII Biology Term 1 Question Paper Here :https://www.pdfquestion.in/uploads/pdf2022/40323-Term1.pdf
Download CBSE XII Biology Term 2 Question Paper Here :https://www.pdfquestion.in/uploads/pdf2022/40323-Term2.pdf