Ecosystem Pattern And Components Test

Ecosystem Pattern And Components

This is online test 01 for CBSE class 12 Biology Ecosystem (Ecosystem pattern and components).. There are 10 questions in this test with each question having around four answer choices.

Questions & Answers

1
Flow of energy in our ecosystem takes place :
  • A
    may occur in multiple directions
  • B
    in three dimensions
  • C
    possible in two directions
  • D
    only in one direction
    Correct
2
Which of the following is correct:
  • A
    GPP – NPP =R
  • B
    GPP – R =NPP
    Correct
  • C
    NPP – GPP =R
  • D
    NPP – R =GPP
3
Producers in the aquatic ecosystem are :
  • A
    Phytoplanktons
    Correct
  • B
    Shrubs
  • C
    Zooplanktons
  • D
    Herbacious plants
4
Which of the following can be categorised as a photoautotroph ?
  • A
    Rafflesia
  • B
    Hydra
  • C
    Euglena
    Correct
  • D
    Cuscuta
5
Term ecosystem was introduced by :
  • A
    Haeckel
  • B
    Tansley
    Correct
  • C
    Lindemann
  • D
    Charles Elton
6
Which of the following ecological pyramid is always erect and upright :
  • A
    pyramid of number
  • B
    none of these
  • C
    pyramid of energy
    Correct
  • D
    pyramid of biomass
7
Which of the following is not an ecological parameter:
  • A
    Energy
  • B
    Biomass
  • C
    Stratification
    Correct
  • D
    Number
8
Amount of biomass produced per unit area by green plants is called:
  • A
    Secondary productivity
  • B
    Respiration
  • C
    Primary productivity
    Correct
  • D
    Tertiary productivity
9
Organism/s living as both producer as well as consumer is/are:
  • A
    Cuscuta
  • B
    Nepenthes &Drocera
    Correct
  • C
    Phytoplankton
  • D
    Algae & fungi
10
Functional and dynamic unit of nature where living and non-living components interact with each-other is:
  • A
    Ecosystem
    Correct
  • B
    Community
  • C
    Biome
  • D
    Tropic structure