Tag: meaning of environment

Quizzes (0) Questions (68)

Questions Related to meaning of environment

Multiple choice evs interdependence in our environment meaning of environment significance of biodiversity habitat and adaptation

State whether the following statements are true or false.
All the physiological requirements and activities of a species in its normal surroundings make up its habitat  

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

An organisms niche and not the habitat describes its location, requirements and work within a particular community or ecosystem. If two species occupy the same niche they will generally compete with one another until one is displaced.

So, the correct option is 'False'.

Multiple choice evs interdependence in our environment meaning of environment significance of biodiversity habitat and adaptation

State whether the following statements are true or false.
Pheromones are chemical substances, meant for. communication and coordination of organs in an individual.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A pheromone is a secreted or excreted chemical factor that triggers a social response in members of the same species meant for communication and coordination. Pheromones are chemicals capable of acting outside the body of the secreting individual to impact the behavior of the receiving individual.

So, the correct option is 'True'.

Multiple choice evs interdependence in our environment meaning of environment significance of biodiversity habitat and adaptation

Statement 1 : Cow in India and Kangaroo in Australia (boot herbivores) are ecological equivalents. 
Statements 2 : The organisms having similar niche in different geographical regions are known as ecological equivalents. 

  1. Both statements 1 and 2 are correct

  2. Statement 1 is correct but statement 2 is incorrect

  3. Statement 1 is incorrect but statement 2 is correct

  4. Both statements 1 and 2 are incorrect
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ecological equivalents are the organisms that occupy same niche iin different habitats (or geographical areas) e.g. both one and cat feed on shews and mice, they occupy the same niche through their habitats are different. 

Multiple choice evs interdependence in our environment meaning of environment significance of biodiversity habitat and adaptation

Lichens and Mosses are the charateristic vegetation of

  1. Tundra region

  2. Temperate region

  3. Mediterranean region

  4. Hot desert region
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Tundras are among Earth's coldest, harshest biomes. Tundra ecosystems are treeless regions found in the Arctic and on the tops of mountains, where the climate is cold and windy and rainfall is scant. So, the correct option is "Tundra region".

Multiple choice evs interdependence in our environment meaning of environment significance of biodiversity habitat and adaptation

 Seasonal variations on Earth occur due to its 

  1. tilted axis

  2. rotation around its own axis

  3. revolution around sun

  4. both (a) and (c)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The revolution of our planet around the Sun and the tilt of axis cause annual variations in the intensity and duration of temperature, resulting in distinct seasons. These variations together with annual variation in precipitation account for the formation of major biomes such as desert, rain forest, and tundra. 

So the correct option is 'both (a), and (c)'.

Multiple choice evs interdependence in our environment meaning of environment significance of biodiversity habitat and adaptation

Organism adapt to their habitat by which of the following means?

  1. Changes in body

  2. Changes in behaviour

  3. Changes in location

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Every organism has its own ecosystem where it can survive but need to adapt to changes of habitat for survival.

Structural: Arctic foxes have small ears to retain body heat while desert foxes have large ears for heat radiation.
Physiological: These does not appear externally but based on metabolism it varies. Desert animals have more efficient kidneys and presence of toxins in the leaf to repel herbivores.
Behavioral: Desert animals are active at night during hot summer weather. Lizards seek a sunny spot in the morning to warm up to operating temperatures more quickly.
So the correct answer is 'All of the above'.

Multiple choice evs - i interdependence in our environment meaning of environment significance of biodiversity habitat and adaptation

Which one of the following is the region of cold temperature? 

  1. Mesosphere

  2. Thermosphere

  3. Ionosphere

  4. Exosphere
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
A. Mesosphere is the layer just above the stratosphere and extends from 50-85 km. Temperature is about -90° C in this region.
B. Thermosphere is the layer above the mesosphere. Ultraviolet radiations can penetrate this layer and causes photodissociation of molecules. Temperature increases in this region.
C. Ionosphere is the region of upper atmosphere of Earth that extends from 60-1000 km. Ionization by solar radiation occurs in this region.
D. Exosphere is the outermost layer of Earth's which hardly contains air.
Hence,the region of cold temperature is Mesophere.
So, the correct answer is 'Mesophere'.
Multiple choice evs interdependence in our environment meaning of environment significance of biodiversity habitat and adaptation

Which of the following statements is correct?

  1. Two species may not live in the same habitat.

  2. The more dissimilar the niches of two species , the stronger is competition between them.

  3. No two species can occupy exactly the same niche in the same geographical area.

  4. All of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

According to the competitive exclusion principle, no two species can occupy exactly the same niche in exactly the same habitat at exactly the same time. Two species whose niches overlap may evolve by natural selection to have more distinct niches, resulting in resource partitioning.

So the correct answer is 'No two species can occupy exactly the same niche in the same geographical area.'