Organism And Its Environment Test

Organism And Its Environment

This is online test 01 for CBSE class 12 Biology Organisms and Populations (Organism and Its Environment).. There are 10 questions in this test with each question having around four answer choices.

Questions & Answers

1
Biotic components of a habitat includes
  • A
    Competitors and predators
    Correct
  • B
    Physieo-chemical components
  • C
    Competitors only
  • D
    Predators only
2
Which of the following is/are poikilotherm:
  • A
    Humans and fishes
  • B
    Elephants
  • C
    Tapeworm and naked mole rat
    Correct
  • D
    Tapeworm and rabbits
3
Select the mismatched pair out:
  • A
    Carson – silent spring
  • B
    Hutchinson –term biome
    Correct
  • C
    Tansley – ecosystem
  • D
    Haeckel – term ecology
4
Examples of artificial ecosystem is/are:
  • A
    Forest & desert
  • B
    Crop field & aquarium
    Correct
  • C
    Only aquarium
  • D
    Grassland & aquarium
5
Which of the following statements is/are incorrect:
  • A
    Temperature is critical to living organisms for metabolism
  • B
    Organisms need adaptations to optimize their survival and reproduction in their habitat
  • C
    Human intestine cannot be considered a unique habitat
    Correct
  • D
    Both A and B are incorrect
6
CAM is a special photosynthetic pathway found to be present as adaptation within:
  • A
    Photosynthetic bacteria
  • B
    Halophytes
  • C
    Xerophytes
    Correct
  • D
    Hydrophytes
7
Any habitat can support growth of limited number of individuals only called:
  • A
    intrinsic rate of natural increase
  • B
    Saturation capacity
  • C
    Carrying capacity
    Correct
  • D
    Reproductive fitness
8
Interactions between different species living within a particular area may be:
  • A
    useful, fatal and neutral
    Correct
  • B
    usually fatal
  • C
    always beneficial
  • D
    most of the times neutral
9
Interacting members of species live close to each other in following interaction/s:
  • A
    commensalism
  • B
    competition
  • C
    parasitism
  • D
    commensalism, predation and parasitism
    Correct
10
For which of the following would you expect distribution range to be badly affected if average Global temperature keeps increasing:
  • A
    Both Stenothermal species and Euryhaline species
  • B
    Euryhaline species
  • C
    Stenothermal species
    Correct
  • D
    Eurythermal species