Biology Exam Class 12 Online Exam Quiz
Biology Exam Class 12 GK Quiz. Question and Answers related to Biology Exam Class 12. MCQ (Multiple Choice Questions with answers about Biology Exam Class 12
What is the suspension of metabolic activities during summer called?
Options
A : Aestivation
B : Diapause
C : Menopause
D : Regulation
Which rule states that in a cold climate, mammals possess shorter ears and limbs to minimize the heat loss?
Options
A : Bergman’s rule
B : Blackman’s rule
C : Allen’s rule
D : Lindeman’s rule
What is maintaining the constancy of the internal environment called?
Options
A : Conformation
B : Homeostasis
C : Adaptation
D : Migration
Which process do some snails and fishes undergo to prevent themselves from desiccation?
Options
A : Dormancy
B : Migration
C : Aestivation
D : Hibernation
In which of the following, organisms completely stop their metabolic activities?
Options
A : Hibernation
B : Aestivation
C : Death
D : Diapause
The Siberian cranes migrate to which National Park in India?
Options
A : Kaziranga National Park, Assam
B : Silent Valley National Park, Kerala
C : Chikla Lake Bird Sanctuary, Orissa
D : Keoladeo National Park, Rajasthan
For which of the following organisms thermoregulation is energetically expensive?
Options
A : Large-sized aquatic animals
B : Small-sized terrestrial animals
C : Large-sized terrestrial animals
D : Medium-sized terrestrial animals
Why small animals are rarely found in polar regions?
Options
A : Less loss of heat
B : Their surface area and body mass ratio is high
C : Their surface area and body mass ratio is low
D : Their surface area is small
What is diapause?
Options
A : Shedding of leaves
B : Stage of suspended development
C : Aging in mammals
D : Programmed cell death
What are birds and mammals?
Options
A : Thermoconfirmers and osmoconfirmers
B : Thermoconfirmers and osmoregulators
C : Thermoregulators and cold-blooded animals
D : Thermoregulators and osmoregulators
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