Population Test
Population
This is online test 03 for CBSE class 12 Biology Organisms and Populations (Population).. There are 10 questions in this test with each question having around four answer choices.
Questions & Answers
1
Population ecology makes link with :
- AEvolution and origin of life
- BPopulation genetics and inheritance
- CPopulation genetics and evolutionCorrect
- DOnly population genetics
2
Which of the following could be most intense and strongest?
- Anatural selection
- Bintercommunity competition
- Cinterspecific competition
- Dintraspecific competitionCorrect
3
Which statement explains amensalism?
- ABoth species are benefitted
- BBoth species are harmed
- COne species is harmed while other is not affectedCorrect
- DOne species is benefitted while other is not affected
4
Antagonistic interactions will include:
- ASymbiosis
- BNeutralism
- CCommensalism
- DPredation and parasitismCorrect
5
If vital index is >100 then the population will:
- Adecrease showing positive growth
- Bremain static showing zero growth
- Cdecrease showing negative growthCorrect
- Dincrease showing positive growth
6
The birth rate if 7 new plants are added to previous year plant population of 23 Salvinia plants will be:
- A0.25
- B0.4
- C0.3Correct
- D0.5
7
The death rate if 8 individuals in a laboratory population of 40 fruit flies died during a particular week will be:
- A0.4
- B0.2Correct
- C0.1
- D0.3
8
A statement 933 females per 1000 males depict:
- Abiotic potential
- Bgeneration time
- Csex ratioCorrect
- Decological ages
9
How will you represent a stable population?
- Aas a pyramid with broad base
- Ba structure showing larger proportion of young individuals
- Ca pyramid showing large proportion of older individuals
- Das a bell shaped polygonCorrect
10
The number of births in polygamous population is often directly related to :
- Anumber of males
- Bnone of these
- Cboth A and B
- Dnumber of femalesCorrect