In Every Subject, all Questions will be Multiple Choice Questions (MCQ-type, with four options against each of the questions) and the answer(s) to each of the questions shall be marked on the OMR sheet.


Questions will be of three categories, divided as per following table.

Subject Category 1 Category 2 Category 3 Total No of MCQs Total Marks
Mathematics 50 Χ 1 mark each 15 Χ 2 marks each 10 Χ 2 marks each 75 100
Biological Sciences 80 Χ 1 mark each 25 Χ 2 marks each 10 Χ 2 marks each 115 150
Physics 30 Χ 1 mark each 5 Χ 2 marks each 5 Χ 2 marks each 40 + 40 = 80 50 + 50 = 100
Chemistry 30 Χ 1 mark each 5 Χ 2 marks each 5 Χ 2 marks each

Here I m providing Sample Multiple Choice Questions of West Bengal Joint Entrance Examination :

1. Passage cells help in
(A) transport of water towards pericycle (B) transport of water towards epiblema
(C) absorption of water from soil (D) passage of CO2 towards stomata
Ans : (A)
Hint : Passage cells are endodermal cells lacking casparian strip which allow comparatively faster movement of
water into stele.

2. Medullary rays are tissues made up of
(A) phloem parenchyma (B) xylem parenchyma
(C) sieve tube (D) sclerenchyma
Ans : (B)
Hint : Medullary rays or Wood rays are made up of xylem parenchyma.

3. An allosteric inhibitor of the enzyme acts by binding to the
(A) substrate (B) product
(C) catalytic site of the enzyme (D) non-catalytic site of the enzyme
Ans : (D)
Hint : Allosteric inhibitor attaches with non catalytic site of enzyme called ‘Allosteric site’

4. A set of genes will be in a complete linkage when the progeny phenotypes for parental (P) and recombinant (R) types
are
(A) P = 0%, R = 100% (B) P = 50%, R = 50%
(C) P < 50%, R > 50% (D) P = 100%, R = 0%
Ans : (D)
Hint : Since there is complete linkage, parental combinations are 100% and recombinant types are 0%

5. Which one of the following statements is WRONG in relation to transgenic Bt cotton plant?
(A) Crop yield loss due to attack by Bacillus thuringiensis bacterium is reduced
(B) Crop yield loss due to attack by lepidopteran insect pests is reduced
(C) The use of chemical insecticides in the cotton field is minimized
(D) Better quality cotton is produced
Ans : (A)
Hint : Bacillus thuringiensis does not attack cotton plants and hence cannot reduce crop loss.

6. Which one of the following natural polymers is found both in insects and fungi?
(A) pectin (B) chitin
(C) cellulose (D) suberin
Ans : (B)
Hint : Chitin is a natural structural polysaccharide, which is found in both insects and fungi.

7. Which one of the followings in an in situ method of biodiversity conservation?
(A) national park (B) botanical garden
(C) zoological garden (D) scientific laboratory
Ans : (A)
Hint : Botanical garden, zoological parks and scientific laboratory are ex situ methods of conservation.

8. Nucleosome contains
(A) only histone protein (B) both DNA and histone protein
(C) only DNA (D) both DNA and RNA
Ans : (B)
Hint : Nucleosome contains both DNA and histone protein.

9. Which one of the following matching pairs is WRONG?
(A) Mollusca-Pseudocoel (B) Cnidaria-Nematocyst
(C) Annelida-Chloragogen cells (D) Echinodermata-Water vascular system
Ans : (A)
Hint : Mollusca has schizocoelom [true coelom], while Aschelminthes has pseudocoelom.

10. Which one of the following matching pairs is WRONG?
(A) Shell fish-Pisces (B) Silver fish-Arthropoda
(C) Cuttle fish-Mollusca (D) Star fish-Echinodermata
Ans : (A)
Hint : Shell fish are edible aquatic invertebrates, including various species of molluscs, crustaceans and
echinoderms.

11. Third stage larva of Wuchereria bancrofti carried by Culex mosquito is called
(A) cysticercus (B) merozoite
(C) microfilariae (D) trophozoite
Ans : (C)

12. Persons suffering from sickle cell anaemia normally DO NOT suffer from
(A) cholera (B) malaria
(C) high blood pressure (D) hepatitis
Ans : (B)
Hint : Erythrocytic phase of Plasmodium fails to complete in sickle shaped RBCs, hence persons with sickle cell
anaemia do not suffer from malaria.

13. Two related but geographically isolated species are known as
(A) sibling species (B) sympatric species
(C) taxonomic species (D) allopatric species
Ans : (D)


14. Which hormone is responsible for reabsorption of water in kidney?
(A) ADH (B) STH
(C) ACTH (D) GTH
Ans : (A)
Hint : ADH is secreted under water stressed condition. It helps in reabsorption of more water in kidney and maintain
body fluid volume.

15. Wildlife Protection Act India was implemented in the year
(A) 1982 (B) 1988
(C) 1972 (D) 1970
Ans : (C)
Hint : Wildlife protection Act, India was implemented in year 1972.

16. All of the following symptoms are found in jaundice EXCEPT
(A) disorders of hepato-biliary system
(B) abnormal secretion of pancreatic and gastric juices
(C) bile duct obstruction
(D) anaemia
Ans : (B)
Hint : Pancreatic and gastric secretions remain unaffected during obstructive and haemolytic jaundice.

17. The hormone that stimulates the release of pancreatic juice is
(A) secretin (B) glucagon
(C) inhibin (D) insulin
Ans : (A)
Hint : Secretin stimulates the release of pancreatic juice, primarily bicarbonates.

18. Which one of the following combinations acts as a usual antigen binding site of an antibody?
(A) variable regions of a light and another heavy chain
(B) variable regions of two light chains
(C) variable regions of two heavy chains
(D) variable region of a heavy chain and constant region of a light chain
Ans : (A)
Hint : Antigen binding site [paratope] in an antibody includes variable regions of both heavy and light chains.

19. Which one of the followings is a causative agent of plague?
(A) Shigella flexneri (B) Bordetella pertusis
(C) Staphylococcus aureus (D) Yersinia pestis
Ans : (D)
Hint : Plague is bacterial disease caused by Yersina pestis.

20. Which one of the following hormones is responsible for uterine contraction during parturition?
(A) relaxin (B) vasopressin
(C) oxytocin (D) prolactin
Ans : (C)
Hint : Oxytocin helps in contraction of smooth muscles of uterine myometrium.

21. Melatonin is produced from
(A) pineal gland (B) adrenal gland
(C) parathyroid gland (D) ovary
Ans : (A)
Hint : Melatonin hormone is tryptophan derivative secreted by pineal gland.

22. Nitrogenase enzyme is a
(A) magnesium-iron protein (B) molybdenum-iron protein
(C) iron-copper protein (D) nickel-iron protein
Ans : (B)
Hint : Nitrogenase enzyme is a Mo-Fe protein.

23. Necrosis (die-back) of the tip of young leaves is caused due to the deficiency of
(A) iron (B) manganese
(C) zinc (D) copper
Ans : (D)
Hint : Necrosis (die-back) of tip of young leaves is due to deficiency of copper.

24. Guttation is a process of loss of water in
(A) liquid form containing dissolved minerals (B) liquid form without dissolved minerals
(C) vapour form with minerals (D) vapour form without minerals
Ans : (A)
Hint : Guttation is a process of loss of water in liquid form containing dissolved minerals through hydathodes.

25. Which one of the followings is WRONG for meiosis ?
(A) It leads to formation of sister chromatids
(B) It occurs in diploid cell
(C) It occurs in haploid cell
(D) It occurs by splitting of centromeres and separation of sister chromatids
Ans : (C)
Hint : Meiosis does not occur in haploid cells.

26. Which one of the following combination of all three fatty acids are essential for human beings ?
(A) oleic acid, linoleic acid and linolenic acid
(B) palmitic acid, linoleic acid and arachidonic acid
(C) oleic acid, linoleic acid and arachidonic acid
(D) linoleic acid, linolenic acid and arachidonic acid
Ans : (D)
Hint : These are unsaturated essential fatty acids, taken as supplement from plant sources.

27. Which one of the following information is essential to determine the genetic map distance between two genes located
on the same chromosome ?
(A) length of the particular chromosome
(B) number of genes present in the particular chromosome
(C) number of nucleotides in the particular chromosome
(D) percentage of crossing over or recombinant frequency between the two genes
Ans : (D)
Hint : Recombination frequency or percentage of crossing over between two genes gives an idea of distance between
adjacent genes.

28. What will be the percentage of guanine in a DNA molecule having 20% adenine ?
(A) 20% (B) 30%
(C) 40% (D) 60%
Ans : (B)
Hint : According to Chargaff’s rule ; A = T ; C = G
If the % of A = 20%, therefore T = 20% or, A + T = 40%. Therefore, G + C = 60% and hence G = 30%

29. Which one of the following group of animals is homeothermic ?
(A) reptiles (B) amphibians
(C) birds (D) fishes
Ans : (C)
Hint : Birds and mammals can maintain their body temperature irrespective of external temperature variation.

30. Neoteny refers to
(A) development of gonads (B) moulting
(C) metamorphosis (D) retention of larval traits in the adult body
Ans : (D)