WBCS Mains Biology Ecology & Biodiversity Questions 2022

Q. The closely related morphologically similar sympatric populations, but reproductively isolated, are designated as
(A) Clones
(B) Sibling species
(C) Clines
(D) Demes

Correct Answer: (B) Sibling species

Q. Plants such as Prosopis, Acacia and Capparis represent examples of tropical
(A) Deciduous forests
(B) Evergreen forests
(C) Grasslands
(D) Thorn forests

Correct Answer: (D) Thorn forests

Q. Which one of the following describes the use of organisms to control pests?
(A) Bioremediation
(B) Biological control
(C) Species niche partitioning
(D) Vector control

Correct Answer: (B) Biological control

Q. The study of the distribution of the world’s species both in the past and in the present is known by what term?
(A) Geology
(B) Biogeography
(C) Biodiversity
(D) Biogeomorphology

Correct Answer: (B) Biogeography

Q. Which form of symbiosis benefits one member of the interaction, but neither benefits nor harms the other member?
(A) Parasitism
(B) Commensalism
(C) Sequentialism
(D) Mutualism

Correct Answer: (B) Commensalism

Q. Which of the following is absent in polluted water?
(A) Hydrilla
(B) Water hyacinth
(C) Larva of stone fly
(D) Blue-green algae

Correct Answer: (C) Larva of stone fly

Q. A population has unlimited resources and exhibits rapid and sustained population growth. This type of growth would be best described by which one of the following?
(A) Exponential
(B) Logistic
(C) Sigmoidal
(D) Parabolic

Correct Answer: (A) Exponential

Q. Which is the result of damage to relative biological effectiveness?
(A) High temperature
(B) Pollution
(C) Radiation
(D) Low temperature

Correct Answer: (C) Radiation

Q. Antibiotic resistance in organisms is the result of what process?
(A) Differentiation
(B) Evolution
(C) Emergence
(D) Succession

Correct Answer: (B) Evolution

WBCS Mains Biology Ecology & Biodiversity Questions 2021

Q. Which of the following belong to the category of primary consumers?
(A) Snakes and Frogs
(B) Insects and Cattle
(C) Eagles and Snakes
(D) Water insects

Correct Answer: (B) Insects and Cattle

WBCS Mains Biology Ecology & Biodiversity Questions 2018

Q. Bhagabatpur project is for breeding
(A) Marsh Crocodile
(B) Tigers
(C) Black buck
(D) Dholes

Correct Answer: (A) Marsh Crocodile

Q. Which is correctly matched?
(A) Apiculture – Honey bee
(B) Pisciculture – Silk moth
(C) Sericulture – Fish
(D) Aquaculture – Mosquito

Correct Answer: (A) Apiculture – Honey bee

Q. Which of the following is not vestigial in man?
(A) Tail vertebrae
(B) Nails
(C) Nictitating membrane
(D) Vermiform appendix

Correct Answer: (B) Nails

Q. Decomposers which specifically act on the fecal matter of other organisms are called
(A) Coprophagic
(B) Heterophagic
(C) Allophagic
(D) Paraphagic

Correct Answer: (A) Coprophagic

WBCS Mains Biology Ecology & Biodiversity Questions 2017

Q. Young of cockroaches is called
(A) Ephyra
(B) Nymph
(C) Maggot
(D) Juvenile

Correct Answer: (B) Nymph

Q. Ornithology is the study of
(A) Mammals
(B) Bat
(C) Fishes
(D) Birds

Correct Answer: (D) Birds

Q. Who is known as the father of taxonomy?
(A) Angler
(B) Aristotle
(C) Linnaeus
(D) Charles Darwin

Correct Answer: (C) Linnaeus

WBCS Mains Biology Ecology & Biodiversity Questions 2016

Q. ‘Equus caballus’ is the scientific name of
(A) Cow
(B) Horse
(C) Cat
(D) Tiger

Correct Answer: (B) Horse

Q. Water blooms are mostly caused by
(A) Cyanobacteria
(B) Diatoms
(C) Dinoflagellates
(D) Green algae

Correct Answer: (A) Cyanobacteria

Q. The extinction of dinosaurs occurred approximately
(A) 25 million years ago (mya)
(B) 45 mya
(C) 65 mya
(D) 80 mya

Correct Answer: (C) 65 mya

WBCS Mains Biology Ecology & Biodiversity Questions 2015

Q. Single-cell animals reproduce by
(A) Fission
(B) Fusion
(C) Budding
(D) Regeneration

Correct Answer: (A) Fission

Q. Animal with a single nostril is
(A) Whale
(B) Tortoise
(C) Python
(D) Shark

Correct Answer: (A) Whale

Q. In proportion to the size of the body, which bird lays the largest-sized eggs?
(A) Ostrich
(B) Tinamous
(C) Vulture
(D) Kiwi

Correct Answer: (D) Kiwi

Q. Study of bird’s nest is
(A) Ornithology
(B) Nidology
(C) Phenology
(D) Ecology

Correct Answer: (B) Nidology

Q. Salmon fishes are also called
(A) Bony fishes
(B) Trout
(C) Cod
(D) Star fish

Correct Answer: (B) Trout

Q. Competitive exclusion principle was also denoted by
(A) Darwin
(B) Gause
(C) Odum
(D) Wallace

Correct Answer: (B) Gause

Q. Life on the Earth started from
(A) DNA
(B) Polypeptide
(C) RNA
(D) Conjugate protein

Correct Answer: (C) RNA

Q. Among the following, which one lays eggs and does not produce young ones directly?
(A) Echidna
(B) Kangaroo
(C) Porcupine
(D) Whale

Correct Answer: (A) Echidna

Q. Which one of the following sets of elements was primarily responsible for the origin of life on the Earth?
(A) Hydrogen, Oxygen, Sodium
(B) Carbon, Hydrogen, Nitrogen
(C) Oxygen, Calcium, Phosphorus
(D) Carbon, Hydrogen, Potassium

Correct Answer: (B) Carbon, Hydrogen, Nitrogen

Q. Tiger mosquitoes are
(A) Anopheles
(B) Culex
(C) Aedes
(D) Mansoides

Correct Answer: (C) Aedes

WBCS Mains Biology Ecology & Biodiversity Questions 2014

Q. The continent where modern man originated is
(A) Asia
(B) Europe
(C) South America
(D) Africa

Correct Answer: (D) Africa

Q. The following is an example of a marsupial
(A) Whale
(B) Bat
(C) Mole
(D) Kangaroo

Correct Answer: (D) Kangaroo

Q. Black panther is a
(A) Panther
(B) Jaguar
(C) Tiger
(D) Leopard

Correct Answer: (D) Leopard