WBCS Mains Environment Biodiversity & Wildlife Conservation Questions 2023

Q. BOD increases in a waterbody due to the increase of

(A) Phytoplankton
(B) Zooplankton
(C) Sewage
(D) Heavy Metals

Correct Answer: (C) Sewage.

Q. The latest Biosphere Reserve in India is

(A) Nilgiri
(B) Andaman and Nicobar
(C) Gulf of Mannar
(D) Panna

Correct Answer: (D) Panna.

Q. How many biosphere reserves are there in India in 2023?

(A) 17
(B) 18
(C) 19
(D) 20

Correct Answer: (B) 18.

Q. Gahirmatha Sanctuary is the only sanctuary for _______ in Odisha.

(A) Turtles
(B) Crocodiles
(C) Elephants
(D) Deer

Correct Answer: (A) Turtles.

WBCS Mains Environment Biodiversity & Wildlife Conservation Questions 2022

Q. Which one of the following would most directly prevent a dead zone from forming in a water body that is already experiencing eutrophication?

(A) Increase the O₂ concentration in the water
(B) Lower the nutrient levels
(C) Increase the amount of algae and phytoplankton
(D) Increase the amount of bacteria that decompose dead organic matter

Correct Answer: (A) Increase the O₂ concentration in the water.

Q. Pyramid of numbers deals with number of

(A) species in an area
(B) individuals in a community
(C) individuals in a tropic-level
(D) subspecies in a community

Correct Answer: (C) individuals in a tropic-level.

Q. Which one of the following is not a site for in-situ method of conservation of flora?

(A) Biosphere Reserves
(B) Botanical Garden
(C) National Park
(D) Wildlife Sanctuary

Correct Answer: (B) Botanical Garden.

Q. Which one of the following is a biodiversity hotspot in India?

(A) Western Ghats
(B) Nandadevi
(C) Easter Ghats
(D) Aravalli

Correct Answer: (A) Western Ghats.

Q. Upper part of sea aquatic ecosystem contains

(A) plankton
(B) nekton
(C) plankton and nekton
(D) benthos

Correct Answer: (C) plankton and nekton.

WBCS Mains Environment Biodiversity & Wildlife Conservation Questions 2021

Q. In an area where DDT had been used extensively, the population of birds declined significantly because

(A) snakes were feeding exclusively on birds.
(B) many of birds eggs laid, did not hatch.
(C) birds stopped laying eggs.
(D) earthworms in the area got eradicated.

Correct Answer: (B) many of birds eggs laid, did not hatch.

Q. Cattle waste has COD several times higher than BOD because of

(A) high levels of fibre.
(B) high levels of microflora.
(C) high levels of cellulose, lignin and fibre.
(D) All of the above

Correct Answer: (C) high levels of cellulose, lignin and fibre.

Q. Biodiversity conservation within natural habitat is

(A) Zoological garden
(B) Ex-situ conservation
(C) In-situ conservation
(D) In-vitro conservation

Correct Answer: (C) In-situ conservation.

WBCS Mains Environment Biodiversity & Wildlife Conservation Questions 2020

Q. Kanha National Park is famous for

(A) Rhinoceros
(B) Tiger
(C) Birds
(D) Crocodiles

Correct Answer: (B) Tiger.

Q. Nalgonda method was developed by Indian Scientist to remove which chemical species from water?

(A) Iron
(B) Manganese
(C) Chromium
(D) Fluoride

Correct Answer: (D) Fluoride.

Q. Kanha National Park is situated in

(A) Assam
(B) Rajasthan
(C) Uttar Pradesh
(D) Madhya Pradesh

Correct Answer: (D) Madhya Pradesh.

Q. The largest Tiger Reserve in India is

(A) Sundarban
(B) Periyar
(C) Kanha
(D) Nagarjunsagar Srisailam

Correct Answer: (D) Nagarjunsagar Srisailam.

Q. MAB stands for

(A) Man and Biosphere
(B) Man, Antibiotic and Bacteria
(C) Man and Biotic Community
(D) Mayer, Andersand and Bisby

Correct Answer: (A) Man and Biosphere.

Q. Rajaji National Park is situated in

(A) Delhi
(B) Uttarakhand
(C) Tamil Nadu
(D) Karnataka

Correct Answer: (B) Uttarakhand.

WBCS Mains Environment Biodiversity & Wildlife Conservation Questions 2019

Q. Which of the Indian Lake possess 20% of India’s sea-grass distribution?

(A) Chilka Lake
(B) Loktak Lake
(C) Dal Lake
(D) Mansar Lake

Correct Answer: (A) Chilka Lake.

Q. Where is the shoal grassland found in India?

(A) Western Ghats
(B) Sundarban
(C) Andaman-Nicobar
(D) Himalayas

Correct Answer: (C) Andaman-Nicobar.

Q. What is the National aquatic animal of India?

(A) River Dolphin
(B) Green Sea Turtle
(C) Seahorse
(D) Dugong

Correct Answer: (A) River Dolphin.

Q. CITES became effective from the year

(A) 1970
(B) 1975
(C) 1980
(D) 1985

Correct Answer: (B) 1975.

Q. Indian Board of Wildlife was established in

(A) 1932
(B) 1952
(C) 1962
(D) 1972

Correct Answer: (B) 1952.

Q. What is Plankton?

(A) Large plants in water.
(B) Microscopic floating organisms-Plants and animals.
(C) Bottom dwelling aquatic organisms
(D) None of the above

Correct Answer: (B) Microscopic floating organisms-Plants and animals.

WBCS Mains Environment Biodiversity & Wildlife Conservation Questions 2018

Q. Which of the following is a biodegradable pollutant?

(A) Dye effluent
(B) Bleaching effluent
(C) Sewage
(D) Heavy metals

Correct Answer: (C) Sewage.

WBCS Mains Environment Biodiversity & Wildlife Conservation Questions 2017

Q. Which biosphere reserve in India has been included in UNESCO list in March, 2016?

(A) Agasthyamala biosphere reserve
(B) Simlipal biosphere reserve
(C) Sundarbans biosphere reserve
(D) Nanda Debi biosphere reserve

Correct Answer: (A) Agasthyamala biosphere reserve.

WBCS Mains Environment Biodiversity & Wildlife Conservation Questions 2016

Q. The Bhitarkanika Wildlife Sanctuary is in

(A) Odisha
(B) Madhya Pradesh
(C) Rajasthan
(D) Assam

Correct Answer: (A) Odisha.

Q. Sargasso Sea is the other name of

(A) North Atlantic
(B) South Atlantic
(C) North Pacific
(D) South Pacific

Correct Answer: (A) North Atlantic.

Q. The species which are extremely sensitive to the environment are also called

(A) keystone species
(B) sentinel species
(C) endangered species
(D) vulnerable species

Correct Answer: (B) sentinel species.

Q. The Mangrove forest of India constitute what per cent of the total mangrove forest of the world?

(A) 5%
(B) 7%
(C) 10%
(D) 14%

Correct Answer: (B) 7%.

Q. Hubbert curve denotes

(A) Global Biodiversity
(B) Global Oil Production
(C) Global Food Production
(D) Global Forest Cover

Correct Answer: (B) Global Oil Production.

Q. The following is not a biosphere reserve in India:

(A) Gulf of Mannar
(B) Nanda Devi
(C) Bhitarkonika
(D) Sundarbans

Correct Answer: (C) Bhitarkonika.

WBCS Mains Environment Biodiversity & Wildlife Conservation Questions 2015

Q. Zoo conservation data is kept by

(A) ICBN
(B) ICZN
(C) WZCS
(D) ICTV

Correct Answer: (C) WZCS.

Q. Marsh crocodile conservation in Sundarbans is located in

(A) Sajnekhali
(B) Sudhanyakhali
(C) Kalash Island
(D) Bhagabatpur

Correct Answer: (D) Bhagabatpur.

Q. Tiger conservation project in India was introduced from

(A) 1953
(B) 1963
(C) 1973
(D) 1983

Correct Answer: (C) 1973.

Q. The oldest animal conserved in India is

(A) Tiger
(B) Lion
(C) Elephant
(D) Black Bear

Correct Answer: (C) Elephant.

Q. Maximum number of mass extinction occurred during

(A) Holocene
(B) Devonian
(C) Oligocene
(D) Pleistocene period

Correct Answer: (B) Devonian.

Q. The number of biodiversity hot spots in India is

(A) One
(B) Two
(C) Three
(D) Four

Correct Answer: (D) Four.

Q. The convention for biodiversity is dated back to

(A) 1973
(B) 1983
(C) 1993
(D) 2003

Correct Answer: (C) 1993.

Q. The acidification of oceans is increasing. Why is this phenomenon a cause of concern? 1. The growth and survival of coral reefs will be adversely affected 2. The survival of some animals that have phytoplankton larvae will be adversely affected 3. The cloud seeding and formation of clouds will be adversely affected. Which of the statement(s) given above is/are correct?

(A) 1, 2
(B) Only 2
(C) 1 and 3
(D) All of these

Correct Answer: (A) 1, 2.

WBCS Mains Environment Biodiversity & Wildlife Conservation Questions 2014

Q. Name the turtle which rests within West Bengal sea coasts

(A) Batagur busca
(B) Indian Soft Shelled Gangetic Turtle
(C) Indian Flap Shelled Turtle
(D) Olive Ridley

Correct Answer: (D) Olive Ridley.

Q. For which mangrove species maximum sweet water influx is required?

(A) Keora
(B) Sundari
(C) Kantra
(D) Goran

Correct Answer: (B) Sundari.

Q. Which of the following Tiger Reserves is called Kingfishers’ Paradise?

(A) Buxa
(B) Corbett
(C) Sundarban
(D) Kaziranga

Correct Answer: (C) Sundarban.

Q. How many biodiversity rich centres are there in India?

(A) 1
(B) 2
(C) 12
(D) More than 12

Correct Answer: (B) 2.

Q. Hot spots are areas with

(A) Low diversity
(B) High diversity
(C) Genetic diversity
(D) Ecological diversity

Correct Answer: (B) High diversity.

Q. Which bird is highly threatened by PCB?

(A) Sparrow
(B) Dove
(C) Ostrich
(D) Penguin

Correct Answer: (D) Penguin.