Organism and its Environment
Organism and its Environment: Overview
This Topic covers sub-topics such as Ecology, Biome, Organisms and Populations, Abiotic Factors, Ecotone, Edaphic Factors, Climatic Factors, Levels of Organisation in Ecology, Biotic Potential, Responses to Abiotic Factors and, Eurythermal Organisms
Important Questions on Organism and its Environment
Which of the following method is used by fungi, and zooplanktons to overcome the temporary short-lived climatic stressful conditions?

The following graph represents the organismic response to certain environmental, condition (e.g., temperature) :
Which one of these, or , depicts conformers?

Which of the following regions are not suitable habitat for tiny humming birds:

Which of the following statements are true related to ecology ? The correct statements
(i) Ecologically, habitat is the place in which an organism lives
(ii) Niche is the functional role of an organism in an ecosystem
(iii) Population is a group of organisms of the different species in a specific area at a specific time
(iv) An ecosystem is a functional unit of the biosphere
(v) Ecological organization consists of nine integrative levels, ranging from cell to ecosphere

Match the following ?
List I | List II | ||
(i) | Euryhaline | (a) | Tolerant to wide range of temperatures |
(ii) | Stenohaline | (b) | Restricted to a narrow range of temperature |
(iii) | Eurythermal | (c) | Tolerant to wide range of salinity |
(iv) | Stenothermal | (d) | Restricted to a narrow range of salinity |

Arrange the following scientists in chronological order based on their contribution in Ecology
I. Odum
II. Warming
III. A.G Tansley
IV. Reiter

The best pH range of the soil for cultivation of crop plants is

Which ONE of the following statements about ecosystem energetics is INCORRECT?

Which of the following is not a suspended activity in animals against abiotic stresses?

Statement : The animals which live in colder regions have larger body size with greater body mass
Reason : The small surface area does not help to conserve heat
Which of the following is true?

In a thermally stratified lake in temperate region, the upper layer in winter is

Identify the incorrect statements among the following:
i. Homeostasis ensures the constant osmotic concentration of cells.
ii. The famous Keoladeo National Park (Bharatpur) in Rajasthan hosts thousands of migratory birds coming from Siberia, in every winter.
iii. $99 \%$ of animals and nearly all plants are regulators.
iv. The conformers are able to maintain their body temperature inspite of changes in ambient temperature.

Some organisms are tolerant of a wide range of salinities, these are known as

In the given graph, which type of Biome is represented by ?

To maintain a constant internal environment, an organism should have a high amount of internal energy. Which of the following organism in this aspect show complete constant internal environment with changing external environment?

Which one of the following is not a state of dormancy under abiotic-stress situations?

In which of the following responses to abiotic stress, the organism is unable to maintain its internal temperature?

The part of the Earth and atmosphere supporting life is

The term ecology was proposed by

