Population interactions, in which both the species get benefited:
- AParasitism
- BCompetition
- ✓Mutualism
- DPredation
Answer: C.
View full solution →Question types
Organisms and Populations question types
60 questions across 6 question groups — pick any mix to generate a Biology paper with step-by-step answer keys.
60
Questions
6
Question groups
5
Question types
01
M.C.Q (1 Marks)
18 Q→021 Marks Question
19 Q→032 Marks Questions
4 Q→043 Marks Question
5 Q→055 Marks Questions
4 Q→06Fill in blanks.
10 Q→Sample Questions
Organisms and Populations questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Correct set of processes which decreases the population density are:
- ANatality, Emigration
- BMortality, Immigration
- CNatality, Immigration
- ✓Mortality, Emigration
Answer: D.
View full solution →Some important attributes of the population which are not important for the individuals are:
(i) Birth rate and death rate
(ii) Male and female
(iii) Birth and death
(iv) Sex ratio
(i) Birth rate and death rate
(ii) Male and female
(iii) Birth and death
(iv) Sex ratio
- AOnly (i)
- BOnly (ii)
- C(ii) and (iii)
- ✓(i) and (iv)
Answer: D.
View full solution →The poisonous substance found in Calotropis is:
- ✓Glycoside
- BNicotine
- CCaffeine
- DQuinin
Answer: A.
View full solution →Name the flower with which the bee does pseudo copulation:
- ✓Ophrys orchid
- BMustard
- CAlthenrosea
- DFig
Answer: A.
View full solution →
Identify the pyramid given above and write down the special features on the basis of which you have identified it.
Mammals are capable of maintaining homeostasis but few small animals are capable to save their lives in Polar region. Write its reason.
Write any four adaptations found in xerophytic plants to reduce transpiration.
What do you understand by mangrove vegetation?
How are predator important?
Explain the four basic process to increase or decrease in population density in a habitat.
Under mutualism in flowering plants the development of the flower and its pollinating species are strongly linked to each other. Confirm their statement with the fig plant.
Explain the sexual deceit found in orchid. ###Why shape, colour and markings of a petal of the Mediterranean orchid flower are similar to those of a female bumble bee? Explain.
Explain the reason for population growth explosion.
Explain the difference between predation and Parasitism.
Explain the difference between commensalism and mutualism. Give example of each.
Explain briefly about various types of interactions found in a population.
Explain in which fundamental processes, the density of a population in a given habitat increases are decreases during a given period.
Write three important characteristics of population.
Describe the logistic population growth.
Mention the biological factors of ecology.
Write short notes on the followings : (a) Predation (b) Competition
_________ employs pseudo-copulation to get pollination.
Species adopt the process of _________ to avoid inter-specific competition.
Controlling invasive populations of red ants by ruphus woodpecker is an example of _________.
The Abingdon tortoise became extinct from the Galapogos island within ten years due to the high browsing capacity of goats. This is called _________.
Space parasites are called They receive only support from the host plant, hence they are also examples of _________.
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