The most ecologically relevant environmental factor is:

1. Temperature

2. Water

3. Light

4. Soil

Subtopic:  Abiotic Factors: Temperature (OLD NCERT) |
 86%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

If global warming continues, how would the distributional range of some species be affected?

1. There will be a poleward shift

2. There will be an equatorial shift

3. No change expected for any species

4. Shift to marine water from land

Subtopic:  Abiotic Factors: Temperature (OLD NCERT) |
 52%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

The plants which can withstand with narrow and broad range of temperature tolerance respectively are:

1. monothermal and stenothermal

2. stenothermal and monothermal

3. stenothermal and eurythermal

4. stenothermal and mesothermal

Subtopic:  Abiotic Factors: Temperature (OLD NCERT) |
 95%
From NCERT
AIIMS - 2013
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

I. Organisms living in oceans, lakes, and rivers face water-related problems.
II. Euryhaline can tolerate a wide range of salinities
III. Stenohaline are restricted to a narrow range of salinities
IV. No freshwater animals cannot live for long in seawater but sea animals can live in freshwater for a long time because of osmotic balance
V. The salt concentration (measured as salinity in parts per thousand), is less than 5 in inland water, 30-35 in the sea, and >100 in some hypersaline lagoons.
(1) All are correct                     

(2) All are false

(3) Only IV is wrong                 

(4) Only I, III, V are correct

Subtopic:  Abiotic Factors: Temperature (OLD NCERT) |
 70%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Which of the following is best suited with the abiotic factor temperature, playing role in changes in the physicochemical environment of different habitats?

1. The average temperature of land is approximately 50 throughout the year

2. The temperature of temperate countries is very much favorable for mango trees

3. Temperature affects the kinetics of enzyme and hence the basal metabolic activity of the body

4. Both 1 and 2

Subtopic:  Abiotic Factors: Temperature (OLD NCERT) |
 76%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Consider the given statements:
I. Temperature is the most important ecologically relevant environmental factor.
II. Animals living in aquatic environment do not face any water related problems.
III. Photoperiod has no effect on animal reproduction.
 
1. Only II and III are correct
2. Only I is correct
3. Only I and III are correct
4. Only III is correct
Subtopic:  Abiotic Factors: Temperature (OLD NCERT) | Abiotic Factors: Light & Water (OLD NCERT) |
 80%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

If the core body temperature of a human body goes below 37 oC, the feedback mechanism elicited to bring the temperature back to normal will include:
1.    Vasoconstriction and sweating
2.    Vasodilation and sweating
3.    Vasoconstriction and shivering
4.    Vasodilation and shivering
 
Subtopic:  Abiotic Factors: Temperature (OLD NCERT) | Response of Organisms to Abiotic Factors (OLD NCERT) |
 67%
Please attempt this question first.
Hints
Please attempt this question first.

Temperature is the most important environmental factor for organisms because:
 
1. it affects enzyme kinetics
2. its availability is closely linked to the availability of light
3. it causes more water to be available in oceans
4. vast majority of organisms are eurythermals
Subtopic:  Abiotic Factors: Temperature (OLD NCERT) |
 82%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

For which of the following animals will thermoregulation be the most energetically expensive?
1. Elephant
2. Humming-bird
3. Rabbit
4. Horse
Subtopic:  Abiotic Factors: Temperature (OLD NCERT) |
 83%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

Thermoregulation is likely to be energetically most expensive for:
1. Blue whale
2. Humans
3. Humming birds
4. Elephant
Subtopic:  Abiotic Factors: Temperature (OLD NCERT) | Response of Organisms to Abiotic Factors (OLD NCERT) |
 84%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.