Organism and its Environment

IMPORTANT

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

EASY
IMPORTANT

Which of the following method is used by fungi, and zooplanktons to overcome the temporary short-lived climatic stressful conditions?

EASY
IMPORTANT

The following graph represents the organismic response to certain environmental, condition (e.g., temperature) :

Question Image

Which one of these, a or b, depicts conformers?

EASY
IMPORTANT

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

HARD
IMPORTANT

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

EASY
IMPORTANT

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

MEDIUM
IMPORTANT

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

MEDIUM
IMPORTANT

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

MEDIUM
IMPORTANT

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

EASY
IMPORTANT

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

MEDIUM
IMPORTANT

Statement S: The animals which live in colder regions have larger body size with greater body mass 

Reason R : The small surface area does not help to conserve heat

Which of the following is true?

EASY
IMPORTANT

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

MEDIUM
IMPORTANT

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.

EASY
IMPORTANT

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

EASY
IMPORTANT

Question Image

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

EASY
IMPORTANT

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?

HARD
IMPORTANT

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

HARD
IMPORTANT

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

EASY
IMPORTANT

The part of the Earth and atmosphere supporting life is

EASY
IMPORTANT

The term ecology was proposed by