Ecology MCQ Quiz

Ecology MCQ Quiz
Ecology MCQ Quiz
Ecology MCQ Quiz
Ecology MCQ Quiz

Things to remember before attempting this Ecology MCQ Quiz:

  1. There are 25 questions in Ecology MCQ Quiz. Attempt all MCQs it’s totally worth it (Don’t do it in final CSIR NET JRF EXAM, as there you will have more freedom of choice for questions and limited time. For example in final exam you have to answer 25 questions out of 75 (which means you can attempt 1 question out of 3) in 2 hours (give entire 2 hours for part ‘C’ then after completing part ‘C’ go for Part ‘B’ it would be beneficial for you). This Ecology MCQ Quiz has mixed questions of both Part C and Part B. In this Ecology MCQ Quiz we haven’t given you optional questions as we have included only selective topics from Ecology like :
  • Population Ecology

2. All these 25 Ecology MCQ Quiz has taken directly from CSIR NET Life Science previous year’s question papers. So it may seems difficult for you if you are the beginner, so just go through the entire quiz and read all the questions carefully write down the concepts or words that you have encountered 1st time in life and search them in books and online resources! You can Download Free Books in pdf format provided by

3. Then after completing your studies again come back to quiz and attempt these Ecology MCQ Quiz 1 you will find it little bit easy than your previous attempt. Repeat this strategy for rest of the test and you will find you are becoming better and better day by day, Remember you can’t learn Life Science in just one day it needs consistent efforts with well planned strategy.

4. The rest Ecology questions we will cover in upcoming Life-Science-test series no. 2nd, 3rd, 4th…! You have 2500 seconds (41 minutes 40 seconds) to complete this test means average 100 seconds for each question after that answering all ecology questions, the quiz will automatically submit and it will generate your result immediately !

5. Some of these Ecology questions are too short that it takes less than 30 seconds to read hence read ecology MCQ carefully (invest your time in question once you understand the soul of the question you will win half of your battle there itself) and you don’t need to come back again after reading options which may drive you in state of confusion and ultimate will waste your time. Don’t forget to check the important words during ecology quiz, which can shift the meaning of question like CORRECT, INCORRECT etc.

6. Don’t Skip Ecology questions without answering, attempt all of them, as it will test not just your knowledge but also your mental toughness there will be few questions in exam for which you haven’t studied but just logically by elimination method you can solve this kind of questions which will boost your confidence and understanding of exam pattern.

7. Last but not the least, attempt all Ecology Quiz questions with full attention without multitasking and any distraction. (If you can’t do it now then don’t attempt it Now, complete your work and then come back, believe me, this Life-Science-test series won’t go anywhere).

3 votes, 3.7 avg
Created on By By: Sachin's BiologySachin Chavan


Ecology MCQ Quiz

Ecology MCQ test 1

1 / 25

Category: Ecology

From the population dynamics point of view  what would be the effective population size of population 150 breeding female and 50 breeding males?

2 / 25

Category: Ecology

What will be the approximate effective population size in a panmictic population of 240 with 200 female and 40 polygamous males? (JUNE 2011)

3 / 25

Category: Ecology

A plot of dN/dt as a function of population density yields____ (DEC 2016)

4 / 25

Category: Ecology

For a species having logistic growth if K=20,000 and r=0.15, the maximum sustainable yield will be___ (DEC 2016)

5 / 25

Category: Ecology

The birth rates and death rates of an insects are 0.25 and 0.05 respectively. In a habitat with carrying capacity of 500 when the population density is 100 by how much does the insect population size increase per unit time if ‘a’ the growth is exponential and ‘b’ growth is logistic ?

6 / 25

Category: Ecology

A population is growing logistically with a growth rate (r) of 0.15/week, in an environment with a carrying capacity of 400. What is the maximum growth rate (N⁰) of individuals/ week that this population can achieve?

7 / 25

Category: Ecology

The population density of an insect species increases from 40 to 46 in a one month. If the birth rate during that period is 0.4 what is death rate? (DEC 2014)

8 / 25

Category: Ecology

The population size of a birth increased from 600 to 645 in one year. If the per capita birth rate of this population is 0.5, what is its per capita death rate ? (JUNE 2014)

9 / 25

Category: Ecology

If Gypsy moth egg density of an insect species is 160 at time ‘t’ and 200 at ‘t+1’, what will be its value at time t+3, assuming that egg density continues to increase at constant rate? (JUNE 2016)

10 / 25

Category: Ecology

Given below are growth equations where dN/dt is defined as____.

A) rN/K

B) rN

C) rN[(K-N)/N]

D) rN[(K-N)K]

With reference to the above equations, which one of the following statements is correct ? (DEC 2017)


11 / 25

Category: Uncategorized

In the following equations

A) dN/dt = rN

B) Nt=N⁰ert

C) dN/dt = rN(K-N/K)

D) dN/dt= rN × N/K

Exponential population growth is described by (DEC 2015)

12 / 25

Category: Ecology

In a population growing logistically and approaching carrying capacity (K), the change in density (N) per unit time  (dN/dt) is maximum when N is equals to ___.

13 / 25

Category: Ecology

The net reproductive rate (R⁰) is 1.5 for a given population. If Nt, population of females at generation t is 500, then what will be the population of female after 4 generations (Nt+4) ? (JUNE 2017)

14 / 25

Category: Ecology

Two species of plants sample in 32 quadrants in a forest. The mean and variance for the occurrence of species 1 were 16.2 and 48 species 2 were 3.6 and 3.2 respectively. Which of the following statements about the distribution of two species in the same quadrant is supported by this finding.

15 / 25

Category: Ecology

A grasshopper population is being assessed by captured-mark-release-capture method. On the first day 100 grasshoppers were captured, and released. And on the next day during recapture 10 marked and 90 unmarked grasshoppers could be found in same time period from the same area. What will be the estimated population size in the given area ? (JUNE 2013)

16 / 25

Category: Ecology

In an experiment to determine the number of rats in a field, 80 rats were initially captured, marked and released. After 1 month, 100 rats were captured in the same field of which 20 were previously marked ones. Based on the above observations estimate population size of rats in the field will be: ( JUNE 2017)

17 / 25

Category: Ecology

In a census for a lake fish, 10 individuals were marked and released. In second sampling after a few days 15 individuals were caught of which 5 individuals where found marked. The estimated population of the fish in the lake will be (DEC 2012)

18 / 25

Category: Uncategorized

You observe the species of barnacles, species 1 and species 2, occupy upper and lower strata of intertidal rocks, respectively. Only when species 2 was removed by you from the lowest strata, species 1 could occupy both upper and lower strata. From the choice given below what would be your inference from these observation. (DEC 2016)

19 / 25

Category: Ecology

In a 2 species interaction, assume that it leads to competition in habitat A, but to facilitation in habitat B. Which of the following is true about niches of these species?

20 / 25

Category: Ecology

Gause’s ‘competitive exclusion principle’ states that two species with identical neiches cannot coexist indefinitely. Which of the following statements is the most appropriate regarding the validity of the principle? (JUNE 2011)

21 / 25

Category: Ecology

The Hutchinsonian concept of ecological niche is based on ____ (DEC 2011)

22 / 25

Category: Ecology

Individuals with greater mass have a smaller surface area to volume ratio. Which helps to conserve the heat this is known as… (DEC 2014)

23 / 25

Category: Ecology

Which of the following statement is most appropriate example of character displacement ?

24 / 25

Category: Ecology

Ecological compression differs from character displacement in that it operates on a____ (DEC 2011)

25 / 25

Category: Ecology

Individuals occupying a particular habitat and adapted to it phenotypically but not genotypically are known as … (2016)

Your score is

The average score is 39%


After attempting this Life-Science-test series if you find some improvements or mistakes in any of these Ecology questions Sachin’s Biology is always Waiting for your suggestion, Comment below your suggestion and doubts!

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Life Science Quiz

After Ecology quiz if you want to attempt some more Life-Science-test series ??? Then try this :

This is it for today see you in next article!!! Till then “Padhate Rehna” !!!

Sachin Chavan

Sachin Chavan is a highly accomplished Senior Research Scholar, who holds an impressive academic background. He has achieved an excellent All India Rank 21 in CSIR NET JRF, GATE, and MH-SET. With a specialization in Angiosperm Taxonomy, Sachin has earned his Master's degree in Botany, and he is currently pursuing his Ph.D. in Angiosperm Taxonomy and GIS. In addition to his academic excellence, Sachin is also a distinguished Online Content Writer and the Founder of Sachin's Biology and He is an authority in the field of Biology and has contributed extensively to the online community through his vast knowledge and experience. His contributions have made a significant impact in the field of biology and have helped many students achieve their academic goals.

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9 Responses

  1. Parul says:

    U r doing a great job

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