In general, which of the following is not an adaptation seen in parasites in accordance with their life style?

1. Loss of unnecessary sense organs

2. Presence of adhesive organs

3. Low reproductive capacity

4. Loss of digestive system

Subtopic:  Population Interactions: Parasitism |
 81%
From NCERT
To view explanation, please take trial in the course.
NEET 2021 - Achiever Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Organisms with very high intrinsic growth rates have:

1. Long generation times

2. Short generation times

3. No courtship behaviour

4. No carrying capacities

Subtopic:  Population: Exponential Growth Model |
 56%
To view explanation, please take trial in the course.
NEET 2021 - Achiever Batch - Aryan Raj Singh
Hints

Intraspecific competition is strongest when the:

1. Species overlap in their distribution

2. Populations overlap in their ranges

3. Population is at its carrying capacity

4. Reproductive rate is at its maximum

Subtopic:  Population: Logistic Growth Model |
To view explanation, please take trial in the course.
NEET 2021 - Achiever Batch - Aryan Raj Singh
Hints

No predator can become proficient at acquiring prey because:
1. Predators are not as intelligent as prey.
2. Predators are too large to be fast enough.
3. Prey populations evolve more rapidly than predator populations.
4. Prey populations evolve anti-predatory traits.

Subtopic:  Population Interactions: Predation |
 53%
From NCERT
To view explanation, please take trial in the course.
NEET 2021 - Achiever Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Asymptote in a logistic growth curve is obtained, when

(1) The value of 'r' approaches zero

(2) K = N

(3) K > N

(4) K < N

Subtopic:  Population: Logistic Growth Model |
 74%
NEET - 2017
To view explanation, please take trial in the course.
NEET 2021 - Achiever Batch - Aryan Raj Singh
Hints

Mycorrhizae are the example of

(1) fungistasis                 

(2) amensalism

(3) antibiosis                   

(4) mutualism

Subtopic:  Population Interactions: Commensalism, Protocooperation & Mutualism |
 92%
From NCERT
NEET - 2017
Please attempt this question first.
Hints
Links
Please attempt this question first.

Which of the following is correct for r-selected species?

(1) Large number of progeny with small size

(2) Large number of progeny with large size

(3) Small number of progeny with small size

(4) Small number of progeny with large size

Subtopic:  Life History Variations |
 71%
NEET - 2016
To view explanation, please take trial in the course.
NEET 2021 - Achiever Batch - Aryan Raj Singh
Hints

If '+' sign is assigned to beneficial interaction, '-' sign to detrimental and '0' sign to neutral interaction, then the population interaction represented by '+' '-' refers to

(1) Mutualism

(2) Amensalism

(3) Commensalism

(4) Parasitism

Subtopic:  Population Interactions: Parasitism |
 88%
From NCERT
NEET - 2016
To view explanation, please take trial in the course.
NEET 2021 - Achiever Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2021 - Achiever Batch - Aryan Raj Singh

The principle of competitive exclusion was stated by 

(1) C Darwin

(2) GF Gause

(3) MacArthur

(4) Verhuisd and Pearl

Subtopic:  Population Interactions: Competition |
 70%
From NCERT
NEET - 2016
To view explanation, please take trial in the course.
NEET 2021 - Achiever Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2021 - Achiever Batch - Aryan Raj Singh

When does the growth rate of a population following the logistic model equal zero? The logistic model is given as dN/dt = rN(1-N/K)

(1) when N nears the carrying capacity of the habitat

(2) when N/K equals zero

(3) when death rate is greater than birth rate

(4) when N/K is exactly one

Subtopic:  Population: Logistic Growth Model |
 61%
NEET - 2016
To view explanation, please take trial in the course.
NEET 2021 - Achiever Batch - Aryan Raj Singh
Hints