Growth of bacteria in a newly inoculated agar plate shows ………………….
- Aexponential growth
- Blogistic growth
- ✓Verhulst-Pearl logistic growth
- Dzero growth
Answer: C.
View full solution →Question types
Organisms and Populations question types
292 questions across 10 question groups — pick any mix to generate a BIOLOGY paper with step-by-step answer keys.
292
Questions
10
Question groups
5
Question types
01
MCQ
91 Q→02Answer the following questions
69 Q→03Answer the following questions.
22 Q→04Answer the following questions in detail.
39 Q→05Answer the following questions in detail.
35 Q→06Complete the following table.
4 Q→07Diagram based question.
4 Q→08Write the short note.
7 Q→09Answer the following in detail :
17 Q→10Case study (4 Marks)
4 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.
Select the statement which explains best parasitism.
- AOne species is benefited.
- BBoth the species are benefited.
- COne species is benefited, other is not affected.
- ✓One species is benefited, other is harmed.
Answer: D.
View full solution →Association between sea anemone and Hermit crab in gastropod shell is that of ………………..
- AMutualism
- ✓Commensalism
- CParasitism
- DAmensalism
Answer: B.
View full solution →An assemblage of individuals of different species living in the same habitat and having functional interactions is ……………….
- ✓Biotic community
- BEcological niche
- CPopulation
- DEcosystem
Answer: A.
View full solution →Which factor of an ecosystem includes plants, animals, and microorganisms?
- ✓Biotic factor
- BAbiotic factor
- CDirect factor
- DIndirect factor
Answer: A.
View full solution →Name the type of association:
a. Clown fish and sea anemone
b. Crow feeding the hatchling of Koel
c. Humming birds and host flowering plants
a. Clown fish and sea anemone
b. Crow feeding the hatchling of Koel
c. Humming birds and host flowering plants
Give one example for each
a. Mutualism
b. Interspecific competition
a. Mutualism
b. Interspecific competition
Camouflage
Parasitism
Commensalism
What is the source of energy for the life in deep ocean trenches where sunlight does not reach?
Give examples of an animal and plant that can survive in fresh water as well as sea water.
Give names of eurythermal and stenothermal animals and plants?
What are the key differences that make such a great variation in the physical and chemical conditions of different habitats?
Give scientific : Temperature is said to be the most ecologically relevant environmental factor.
What is the ecological process behind the biological control method of managing with pest insects?
Define Population and Community.
Write a short note on Behavioural adaptations in animals
Write a short note on Adaptations of plants to water scarcity Or Adaptations in desert plants.
Write a short note on Adaptations of desert animals.
Enlist and explain the important characteristics of a population.
With the help of suitable diagram, describe the logistic population growth curve.
What will be the effect of increasing global temperatures on the different habitats and the organisms found in those habitats?
Explain the ‘Competitive Exclusion Principle’ given by Gause.
With the help of suitable diagram describe the Exponential population growth curve.
Complete the following table by placing the categories and the given signs + : Benefited ; – : Inhibited ; 0 : Not affected
| Interactions | Species | |
| A | B | |
| 1. Neutralism – ………………….. | ||
| 2. Negative interactions ………………………… | ||
| 3. Positive interactions ……………………. | ||
| 4. Both positive and negative interactions ………………………….. | ||
Epiphytic orchid and mango tree, Ascaris and human, Egret and cattle, Lichen having alga and fungus, Bumblebee and flowering plant, Plasmodium vivax and man.
| Column A | Column B |
| (1) Mutualism | ————– |
| (2) Commensalism | ————— |
| (3) Parasitism | ————– |
Hungary, United States, Denmark, Italy, Australia, Kenya, Nigeria, Germany
| Pattern of population growth | Name of the countries |
| (1) Rapid growth | ————– |
| (2) Slow growth | ————— |
| (3) Zero growth | ————– |
| (4) Negative growth | ————– |
Emigration, Immigration, More mortality, Unlimited resources, More natality, Continuous reproduction.
| Column A | Column B |
| (1) Decrease in population density | ————– |
| (2) Increase in population density | ————— |
| (3) Exponential growth | ————– |
From the age pyramids given in figure what will be your forecast for 15 years from now for the populations of 1. Kenya, 2. Australia, 3. Italy and 4. Hungary?
Sketch the different types of Age Pyramids.
Sketch and label the graph showing exponential growth curve of the population.
Sketch and label the graph showing logistic growth curve of the population.
Brood parasitism
Mutualism
Populations Interactions
Mortality.
Natality.
What could be the reasons behind enormous increase in human population?
What are the decisive factors for population density?
With suitable examples describe commensalism.
What is the role of predator in balancing the ecosystem?
How is sunlight important for every ecosystem ?
| Water body A | Salinity values B |
| (1) Streams | (a) 340 ppt |
| (2) Indian Ocean | (b) 5 ppt |
| (3) Hyper saline lagoon | (c) 30-35 ppt |
| (4) Dead sea | (d) 100 ppt |
| Column A | Column B |
| (1) Organism | (a) Large unit with specific climatic zone |
| (2) Population | (b) Different species in particular area |
| (3) Community | (c) Same species in a geographical area |
| (4) Biome | (d) Basic unit of ecological hierarchy |
Eurythermal and stenothermal.
Natality and Mortality.
Generate a Organisms and Populations paper free
Pick question groups from the list above, set marks and difficulty, and export a branded PDF with step-by-step answer keys. First 3 chapters free — no signup.