MCQ Questions for Class 12 Biology Chapter 13 Organisms and Populations with Answers

Check the below NCERT MCQ Questions for Class 12 Biology Chapter 13 Organisms and Populations with Answers Pdf free download. MCQ Questions for Class 12 Biology with Answers were prepared based on the latest exam pattern. We have provided Organisms and Populations Class 12 Biology MCQs Questions with Answers to help students understand the concept very well.

Class 12 Biology Chapter 13 MCQ With Answers

Biology Class 12 Chapter 13 MCQs On Organisms and Populations

MCQ On Organism And Population Class 12 Chapter 13 Question 1.
Habitat together with functions of a species constitute its:
(a) Topography
(b) Trophic level
(c) Boundary
(d) Ecological niche

Answer

Answer: (d) Ecological niche

Class 12 Biology Chapter 13 MCQ Questions Question 2.
The maximum growth rate occurs in :
(a) Lag phase
(b) Exponential, phase
(c) Stationary phase
(d) Senescent phase

Answer

Answer: (b) Exponential, phase

Organism And Population Class 12 MCQ Chapter 13 Question 3.
In which one of the following habitats, does the diurnal temperature of soil surface veiw most?
(a) Shrub land
(b) Forest
(c) Desert
(d) Grassland

Answer

Answer: (c) Desert

In which one of the following habitats, does the diurnal temperature of soil surface veiw most?

Organisms And Population Class 12 MCQ Chapter 13 Question 4.
Science linking heredity with environment is:
(a) Ecology
(b) Ecophysiology
(c) Genecology
(d) Genetics

Answer

Answer: (c) Genecology

Organisms And Population MCQ With Answers Chapter 13 Question 5.
Submerged hydrophytes havedisseced leaves for:
(a) Decreasing surface area
(b) Increasing surface area
(c) Reducing effect pf water currents
(d) Increasing number of stomata

Answer

Answer: (c) Reducing effect pf water currents

Organism And Population MCQ Chapter 13 Class 12 Question 6.
Water holding capacity is maximum in:
(a) Clay
(b) Sand
(c) Silt
(d) Gravel

Answer

Answer: (a) Clay

MCQ On Organism And Population Chapter 13 Class 12 Question 7.
Animals undergo inactive stage during winters. It is called :
(a) Acclimatisation
(b) Hibernation
(c) Aestivation
(d) Adapatation

Answer

Answer: (b) Hibernation

Organisms And Populations MCQ Chapter 13 Class 12 Question 8.
Praying mantis is a good example of:
(a) Camouflage
(b) Mullarian mimicry
(c) Warning colouration
(d) Social insect

Answer

Answer: (a) Camouflage

MCQ On Organisms And Population Chapter 13 Class 12 Question 9.
Niche overlap is:
(a) Mutualism between two species
(b) Active cooperation between two species
(c) Tjvo different parasites on same food
(d) Sharing resources between two species

Answer

Answer: (d) Sharing resources between two species

Organisms And Population MCQ Chapter 13 Class 12 Question 10.
Animals have innate ability to escape from predation. Select the incorrect example:
(a) Colour change in Chameleon
(b) Enlargement of body by swallowing air in puffer fish
(c) Poison fangas of snakes
(d) Melaninin in moths

Answer

Answer: (c) Poison fangas of snakes

MCQ Organism And Population Chapter 13 Class 12 Question 11.
Ozone protects biosphere from high energetic:
(a) Infra-red rays
(b) Ultraviolet rays
(c) X-rays
(d) gamma rays

Answer

Answer: (b) Ultraviolet rays

MCQ Of Organism And Population Chapter 13 Class 12 Question 12.
Avicennia, Rhizophora andAtriplex are:
(a) Xerophytes
(b) Halophytes
(c) Hydrophytes
(d) Mesophytes

Answer

Answer: (b) Halophytes

MCQs On Organism And Population Chapter 13 Class 12 Question 13.
Maximum amounts of humus occurs on:
(a) In lower most layer
(b) In upper layer
(c) In Middle layer
(d) Same everywhere

Answer

Answer: (b) In upper layer

MCQs On Organisms And Population Chapter 13 Class 12 Question 14.
Mycorrhiza is an example to:
(a) Decomposers
(b) Endoparasitism
(c) Symbiotic relationship
(d) Ectoparasitism

Answer

Answer: (c) Symbiotic relationship

Organism And Population Class 12 MCQ Pdf Chapter 13 Question 15.
Plants growing in saline soil with high salt concentration are:
(a) Xerophytes
(b) Halophytes
(c) Heliophytes
(d) Hydrophytes

Answer

Answer: (b) Halophytes

Question 16.
When births are equal to deaths, it is:
(a) Plateau stage
(b) Exponential stage
(c) Early growth stage
(d) Acceleration stage

Answer

Answer: (a) Plateau stage

Question 17.
Which plants is found in mangroove zone?
(a) Rhizophora
(b) Acacia
(c) Pinus
(d) Tectona grandis

Answer

Answer: (a) Rhizophora

Which plants is found in mangroove zone?

Question 18.
Soil transported by air is:
(a) Alluvial
(b) Glacial
(c) Colluvial
(d) Eolian

Answer

Answer: (d) Eolian

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