When the population density reaches the carrying capacity, the logistic growth curve is said to be in:

1. Lag phase

2. A phase of acceleration

3. A phase of deceleration

4. Asymptote

Subtopic:  Population: Logistic Growth Model |
 75%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Links
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

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 2025 - Target Batch
Hints
Links
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Which type of animal tissue changes the diameter of a blood vessel?

(1) Epithelium

(2) Connective

(3) Muscle

(4) Neural

Subtopic:  Cardiac Muscle & Smooth Muscle |
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

advertisementadvertisement

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 |
 55%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
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 2025 - Target Batch
Hints

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 2025 - Target Batch
Hints

advertisementadvertisement

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 |
 70%
NEET - 2016
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
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 2025 - Target Batch
Hints
Links
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

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 |
 60%
NEET - 2016
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints