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Name of the Organization : West Bengal Joint Entrance Examinations Board
Name Of The Exam : WBJEE West Bengal Joint Entrance Exam
Document type : Model Question Paper
Website : wbjeeb.in

Download Sample/Model Question Papers : https://www.pdfquestion.in/uploads/5179-model_question-bio_2014__25032014.pdf

WBJEE Model Question Paper

WBJEE West Bengal Joint Entrance Exam :
MODEL QUESTION PAPER
(Biological Sciences)

Related / Similar Question Paper : WBJEEB JECA Old Question Paper Common Entrance Test for MCA

Category I : Questions carrying one mark each (questions 1 to 22)

1. Plant cells are totipotent because
(A) they can survive under wide range of temperature
(B) they can be preserved under suitable condition
(C) they can be easily multiplied
(D)they can be regenerated to a mature plant
Ans. (D)

2. The ultimate source of energy for the biological processes is
(A) sunlight (B) chemical bonds (C) thermal radiation (D) ATP
Ans. (A)

3. The senescence in plants is associated with the synthesis of
(A) IAA (B) NAA (c) ABA (D) GA
Ans. (C)

4. Hydrolytic enzymes are found in
(A) Peroxisome (B) glyoxysome (C) Lysosome (D) ribosome
Ans. (C)

5. Which of the following metals is associated with nitrogenese
(A) Zn (B) Cu (C) Mn (D) Mo
Ans. (D)

6. A C4 plant is photosynthetically more efficient than a C3 plant because of
(A) low photorespiration (B) its ability to generate more ATP
(C ) thicker leaves (D) its ability to trap more sunlight –
Ans. (A)

7. The protein molecule serves as an electron carrier is
(A)NAD (B) FAD (C ) Ferredoxin (D) NADP
Ans. (C)

8. Cu is an essential component of
(A) cytochrome oxidase (B) carbonic anhydrase
(c) peroxidose (D) alcohol dehydrogenase
Ans. (A)

9. When the pollen tube enters the ovule through the micropyle is called is
(A) endogamy
(B) porogamy
(C) chalazogamy
(D) mesogamy
Ans. (B)

10. Which one is the modified stem
(A) potato
(B) corn
(C) spine of cactus
(D)Raddish
Ans. (A)

11. Largest amount of phosphate bond energy is produced in the process of respiration during
(A)Glycolysis
(B)Krebs cycle
(C) Fermentation
(D)Anaerobic respiration
Ans . (B)

12. Mendel crossed pure breed red flowered plants with pure breed white flowered plants and obtained all red flowered offspring (F1 generation). The gene for red flowers must have been
(A) Assorted
(B) Sex linked
(C) Dominant
(D)Carried on the same chromosome as the gene for white flowers
Ans: C

13. The parasite causing malaria in man was first discovered by
(A)Schwann
(B) Ronald Ross
(C) Landmarck
(D)Laveran
Ans : (D)

14. Haemoglobin remains dissolved in the plasma of
(A)Cockroach
(B) Lizards
(C) Porcupine
(D)Earthworm
Ans: (D)

15. The layers, from which gametes are formed, is
(A)Columnar epithelium
(B)Germinal epithelium
(C)Glandular epithelium
(D)Follicular epithelium
Ans : (B)

16. The following glands secrete saliva except
(A)Lachrymal gland
(B) Parotid gland
(C) Submaxillary gland
(D)Sublingual gland
Ans. (A)

17. Peritoneum in vertebrates is a membrane which invests
(A)Heart
(B) Blood platelets
(C)Alimentary canal and other visceral organ
(D)Lungs
Ans : (C)

18. The arterial pulse is due to
(A)Passage of ejected blood
(B)Quality of blood flowing in arteries
(C) The intermittent discharge of blood into the aorta
(D)The intermittent discharge of blood into the aorta and to the elasticity of the arteries.
Ans : (D)

19. The main function of the white blood corpuseles in the body is
(A)To protect the body against diseases
(B) To carry oxygen to each parts of body
(C) To carry food to each parts of body
(D)To help in the formation of clot.
Ans: (A)

20.‘Grasserie’ disease of silkworm is caused by
(A)Bacteria
(B) Fungus
(C) Protozoa
(D)Virus
Ans: (D)

21. Regulation of body temperature in a homeotherm, when the environmental temperature is high, would involve.
(A)Dilatation of the blood vessels of the skin
(B)Constriction of the blood vessels of the skin
(C)Decreased flow of blood without any change in blood vessels
(D) No change in the above blood vessels
Ans : (A)

22. When man inhales air containing normal concentration of oxygen as well as carbon monoxide, he suffers from suffocation, because
(A)Carbon monoxide affects the diaphragm and intercostals muscles
(B)Carbon monoxide affects the nerves of the lungs
(C)Carbon monoxide reacts with oxygen which is thus removed from the air entering the lungs
(D)Haemoglobin combines with carbon monoxide instead of oxygen and the product cannot dissociate.
Ans : (D)

Category II : Questions carrying two marks each (questions 23 to 34)
23.The phylum arthropoda is characterised by the presence of
(A) External segmentation, a pair of chalicerae and pedipalpi
(B)Exoskeletal scales, metamerism and a pair of antennae
(C)Chitinous exoskeleton, external segmentation and paired jointed appendages
(D) Hairs, external segmentation and metamerism
Ans : (C)