West Bengal PSC Previous Year BIOLOGY Questions with Answers Part-2

 

In this post we list West Bengal Public Service Commission's previous year BIOLOGY related questions with detail answers. In this post we arrange the questions topic wise. This is part-2. 
CLICK Here for Part-1 .
CLICK Here for Part-3
CLICK HERE for Part-4

This is actually the part of WBPSC Previous Year SCIENCE Series .
Under this series we segregate the WBPSC asked science questions into PHYSICS , CHEMISTRY , BIOLOGY , COMPUTER . 

 

CLASSIFICATION

Q. The organ related to locomotion in Amoeba sp. is 
   [WBPSC Miscellaneous Exam-2012(1st)]

1. Cilia
   
2. Flagella
   
3. Parapodia
   
4. Pseudopodia
   

D. Pseudopodia

Explanation: 
Locomotory organ of Amoeba sp. is Pseudopodia.
"Pseudo" means false.
So, literally "Pseudopodia" means "false feet". 

Amoeba is unicellular and due to the movement of protoplasm, pseudopodia is formed.

Q. Necton are
   [WBCS Preliminary Exam-2017]

1. floating organism in water
   
2. Swimming organism in water
   
3. animals associated with aquatic plants
   
4. sub-merged plants in water
   

B. swimming organism in water

Explanation:
Necton: Nectons are aquatic organism that can swim against the water current i.e. swim freely. Example: fish.

Plankton: Plankton are generally small aquatic organisms that can not propel themselves against the water current.

Benthos: Benthos are aquatic organisms that crawl and live at the bottom of water body. Example: Snail.

Q. What is bacteriophage? 
   [WBCS Preliminary Exam-2017]

1. A virus
   
2. A bacterium growing in artificial nutrient medium
   
3. A fungus causing disease
   
4. A phagocytic protozoa
   

A. A virus

Explanation:
"Bacteriophage" literally means "bacteria eater".
Bacteriophage is a type of virus. It infect the bacteria but it is harmless to humans.

Q. The well-known antibiotic penicillin is obtained from this plant group:
   [WBCS Preliminary Exam-2017]

1. Algae
   
2. Fungi
   
3. Lichen
   
4. Angiosperm
   

B. Fungi

Explanation:

• Penicillin, one of the most widely used antibiotic was first discovered by Alexander Fleming. 
• Sir, Alexander Fleming showed that Penicillium notatum (a fungi) produced substance which can kill many of common bacteria that infect human. 
• Penicillin is obtained from the Penicillium mold (belongs to kingdom Fungi).
  

Q. A mammal that lay eggs:
   [WBCS Preliminary Exam-2017]

1. Talpa
   
2. Echidna
   
3. Pteropus
   
4. Lemur
   

B. Echidna

Explanation:
Among the given options, Echidna is a mammal that lay eggs.
A mammal named Platypus also lay egg.

Q. Which one of the following animal phylum is latest by discovery?
   [WBCS Preliminary Exam-2017]

1. Pogonophora
   
2. Kinorhyneha
   
3. Loricifera
   
4. Ctenophora
   

C. Loricifera

Explanation: Animal phylum, Loricifera is latest by discovery.

Q. An ornithologist deals with :
   [WBCS Preliminary Exam-2018, 2019]

1. Insects
   
2. Birds
   
3. Eye
   
4. Heart
   

B. Birds

Explanation:

• Ornithology is a branch of Zoology which deals with the study of birds. 
• An Ornithologist is a person who is an expert on birds. 
• An Entomologist is a person who is an expert on issects. 
• An Ophthalmologist is a doctor who specialises in eye. 
• A Cardiologist is a doctor who specialises in heart.
  

Q. Arrange the following items from general to particular  (i)Animal  (ii)Feline  (iii)Leopard  (iv)Mammal  (v)Vertebrate  (vi)Cat
  [WBCS Preliminary Exam-2019]

1. (i), (ii), (iii), (iv), (v), (vi)
   
2. (i), (iii), (v), (iv), (ii), (vi)
   
3. (i), (iv), (iii), (ii), (v), (vi)
   
4. (i), (v), (iv), (ii),  (iii), (vi)
   

D. (i), (v), (iv), (ii), (iii), (vi)

Explanation:
In the Five Kingdom Classification, Kingdoms are divided into some subgroups. The following chart is showing the hierarchy.

In this classification, all living organism are divided into 5 kingdom. They are:

• Kingdom Monera
  
• Kingdom Protesta 
• Kingdom Fungi 
• Kingdom Plantae 
• Kingdom Animalia  

Following chart showing the scientific classification of Cat and Leopard.

If we arrange the data general to particular, from the above table, it is clear that, it will be :
(1)Animal(i) [Kingdom Animalia]
(2) Vertebrate(v) [Phylum Chordata]
(3) Mammal(iv) [Class Mammalia]
Hence, the right answer will be Option (D).

**In fact, we can reach the correct answer without knowing the above complex data. 

• In A. B, C, D, the first is (i). Hence, we ignore (i). 
• All mammals are vertebrate but all vertebrates are not mammal (e.g. bird is vertebrate but not mammal). So, 1st vertebrate and then mammal. 
• In option A and C, there are first (iv)mammal then (v)vertebrate.
  Hence, Options A and C are incorrect. 
• Leopard is a species. So, it should be after vertebrate and mammal.
  But, in Options (C), (iii)Leopard is before (v)vertebrate and (iv)mammal.
  So, option (C) is incorrect.
• Therefore, option (D) is correct.
  

FOOD & VITAMIN

Q. Night blindness is due to the lack of which vitamin?
   [WBPSC Miscellaneous Exam-2012(2nd)]

1. A
   
2. B
   
3. C
   
4. K
   

A. A

Explanation:

• Night blindness (Nyctalopia) is a type of vision impairment. Person with night blindness can not see well at night or in low light. 
• One of the main causes of of night blindness is Vitamin-A deficiency.
• Myopia, Glaucoma, Cataracts are also be a cause of night blindness.
  

Q. Deficiency of Vitamin-D results in 
   [WBCS Preliminary Exam-2018]

1. Night blindness
   
2. rickets
   
3. scurvy
   
4. hair fall
   

B. rickets

Explanation:

• Rickets is a disease for which children have soft, weak bone. It actually affects the bone development in children. 
• The main causes of Rickets are deficiency of Vitamin-D and Calcium. 
• Night blindness is caused due to the deficiency of Vitamin-A. 
• Scurvy is caused due to the deficiency of Vitamin-C.
  

Q. The food that gives more calories per unit mass of food is 
   [WBCS Preliminary Exam-2019]

1. Protein
   
2. Carbohydrates
   
3. Fat
   
4. Water
   

C. Fat

Explanation:
Fat=9kcal/g
Carbohydrate=4kcal/g
Protein=4kcal/g

VECTOR AND DISEASE

Q. Which one of hte following insects is the carrier of microfilaria 
   [WBPSC Miscellaneous Exam-2012(1st)]

1. Tabanus
   
2. Culex mosquito
   
3. Anopheles mosquito
   
4. Aedes mosquito
   

B. Culex mosquito

Explanation:

• Microfilaria (plural: Microfilariae) is an early stage in the life cycle of certain parasitic nematodes in the family Onchocercidae. 
• Culex mosquito is the carrier of microfilaria.
  

Q. Ascariasis spread through 
   [WBPSC Miscellaneous Exam-2012(1st)]

1. Polluted air
   
2. Polluted water
   
3. Contaminated food
   
4. Bacteria
   

C. Contaminated food

Explanation:
Ascariasis is an intestinal infection caused by a worm named Ascaris lumbricoides.
The eggs of Ascaris are found in soil and human feces (stool). The eggs get into the body when someone eats or drinks something which is contaminated with eggs.

Q. In 2012, the WHO declared India to be free from which disease?
   [WBPSC Miscellaneous Exam-2012(1st)]

1. Small pox
   
2. Polio
   
3. Tuberculosis
   
4. Chicken pox
   

B. Polio

Explanation:

• India has been polio free since 2011. 
• In 2012, World Health Organisation (WHO) removed India from the list as there was no infection for last one year. 
• In 2014, WHO officially certified India as Polio Free.
• Small pox was globally eradicated in 1980.
  

Q. The disease transmitted by blood 
   [WBPSC Miscellaneous Exam-2012(2nd)]

1. Cholera
   
2. Tuberculosis
   
3. AIDS
   
4. Polio
   

C. AIDS

Explanation:

• AIDS= Acquired Immune Deficiency Syndrome.
  
• AIDS is caused by HIV. 
• HIV= Human Immunodeficiency Virus. 
• HIV/AIDS is transmitted through
• Sexual contact with an infected partner
• transfusion of HIV infected person's blood etc.
  

Q. Which disease-causing germ is borne by Anopheles Mosquito?
   [WBPSC Miscellaneous Exam-2012(2nd)]

1. Dengue 
   
2. Encephalitis 
   
3. Malaria
   
4. Filaria
   

C. Malaria

Explanation:

• Dengue ⇒ Aedes mosquito 
• Japanese encephalitis ⇒ Culex mosquito 
• Malaria ⇒ Anopheles mosquito 
• Filaria ⇒ Culex mosquito
  

Q. Zika virus disease transmitted through 
   [WBPSC Miscellaneous Exam-2018]

1. Mosquito
   
2. Dog
   
3. Cat
   
4. Bird
   

A. Mosquito

Explanation:

• Zika virus disease transmitted through Aedes Mosquito. 
• Aedes mosquito generally bite during the day.
• Zika virus was first identified in Uganda in 1947 in monkey. 
• In 1952, Zika virus was identified in humans in Uganda and the United Republic of Tanzania.
  

Q. What is the full form of AIDS?
   [WBPSC Miscellaneous Exam-2018]

1. Acess Immuno-Deficiency Syndrome
   
2. Acquired Immuno-Deficiency Syndrome
   
3. Acquired Immuno-Deficiency System
   
4. Acquired Immuno-Deficiency Sist
   

B. Acquired Immuno-Deficiency Syndrome

Explanation:

• Full form of AIDS is Acquired Immuno-Deficiency Syndrome. 
• AIDS is caused by a virus named HIV. 
• Full form of HIV is Human Immunodeficiency Virus.
  

WBPSC Previous Year BIOLOGY Questions with Answers Part-1

WBPSC Prevous Year BIOLOGY Questions with Answers Part-3 

WBPSC Previous Year BIOLOGY Questions with Answers Part-4 

WBPSC SCIENCE Series 

WBPSC Previoius Year CHEMISTRY Questions with Answers

WBPSC Previous Year PHYSICS Questions with Answers 

WBPSC Previous Year COMPUTER Questions with Answers