Organisms and Populations MCQs | NCERT Biology
Enhance your NCERT Biology preparation with our comprehensive collection of MCQs on 'Organisms and Populations'. Perfect for NEET aspirants and Class 12 students, these multiple-choice questions cover key concepts and help reinforce your understanding.
1. Question
Match the following columns w.r.t. type of interactions and their examples.
| Column I | Column II |
|---|---|
| a. Mycorrhiza | (i) Predation |
| b. Eagle-Rat | (ii) Amensalism |
| c. Penicillium-Bacteria | (iii) Parasitism |
| d. Lice-human | (iv) Mutualism |
Select the correct option from the following:
a(i), b(ii), c(iii), d(iv)
a(iv), b(i), c(ii), d(iii)
a(iv), b(iii), c(ii), d(i)
a(ii), b(iv), c(i), d(iii)
Correct Answer
Wrong Answer
2. Question
Equation for logistic growth is :
Correct Answer
Wrong Answer
3. Question
Natality refers to:
Death rate
Number of individual leaving the habitat
Birth rate
Number of individual entering a habitat
Correct Answer
Wrong Answer
4. Question
Read the following four statements (A-D)
- Geometric growth produces J-shaped population growth curve
- Logistic growth occurs when resources are limiting.
- Equation for exponential growth is Nt = N0ert
- Limiting factors can influence the number of organisms in a population once it reaches its carrying capacity.
How many of the above statements are right?
Four
One
Two
Three
Correct Answer
Wrong Answer
5. Question
The population growth is generally described by the following equation :
What does 'r' represent in the given equation ?
Population density at time 't'
Intrinsic rate of natural increase
Carrying capacity
The base of natural logarithm
Correct Answer
Wrong Answer
6. Question
Which one of the following are the incorrect match for population growth:
Correct Answer
Wrong Answer
7. Question
If in a pond there were 50 water Hyacinth plant last year and through reproduction 10 new plants are added, taking the current population to 60. What is the birth rate for this plant :
0.4 offspring per plant per year
0.2 offspring per plant per year
0.5 offspring per plant per year
0.167 offspring per plant per year
Correct Answer
Wrong Answer
8. Question
Select the incorrect match:
All the cormorants in a wetland – Population
Lotus plants in a pond – Population
Siberian cranes – Bharatpur
Population density – Always measured in Numbers only
