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Organisms and Populations
10 MCQ Tests × 10 Questions
Test 1
10 questions • 1 mark each
1. Which interaction benefits one species while the other is neither benefited nor harmed?
2. In Bryophyllum, vegetative propagation occurs through:
3. The ecological niche of a species refers to its:
4. Animals adapted to burrowing are called:
5. The J-shaped curve represents:
6. Carrying capacity is mainly determined by:
7. A zone of transition between two communities is called:
8. Allen’s Rule states that mammals in colder climates generally have:
9. The pitcher of Nepenthes is formed from the:
10. The process of maintaining a stable internal environment is:
Test 2
10 questions • 1 mark each
1. More than 70% of the world's fresh water is contained in:
2. A relationship in which both species benefit and neither can survive without the other is:
3. Zoospores are asexual reproductive units in:
4. Soil best suited for general plant growth is:
5. Organisms restricted to a narrow temperature range are:
6. When birth rate and death rate exactly balance, the population is in the:
7. The salinity of seawater is generally:
8. A total root parasite among the following is:
9. Drosera catches insects using:
10. Population density refers to population size per:
Test 3
10 questions • 1 mark each
1. A population consists of individuals of:
2. The aggregate of processes determining population size and composition is:
3. Emigration means:
4. A sigmoid growth curve is characteristic of:
5. In the plateau phase, natality and mortality are generally:
6. Mimicry is an evolved resemblance to:
7. Plants adapted to low light intensity generally have:
8. The biome with the least species diversity among these is:
9. A sea anemone attached to a hermit crab is an example of:
10. Mycorrhiza is an association between:
Test 4
10 questions • 1 mark each
1. A species that can tolerate a wide range of salinities is:
2. The dark zone of a lake where light does not reach is the:
3. The physical position and functional role of a species describes its:
4. A predator-prey relationship is a:
5. The inherent maximum capacity of a population to increase is called:
6. As population size increases, environmental resistance generally:
7. The tropical forest generally has a mean annual precipitation of approximately:
8. Submerged hydrophytes generally lack:
9. The relationship where one species is harmed and the other is unaffected is:
10. The energy primarily utilized by the living world is:
Test 5
10 questions • 1 mark each
1. Xerocoles are animals adapted to:
2. In Nepenthes, the pitcher is a modification of the:
3. Remora attached to a shark demonstrates:
4. A community is made up of:
5. The highest primary productivity among the following is generally found in:
6. Fossorial animals are adapted for:
7. The best soil pH for cultivation given in the source is:
8. A population with many young individuals is expected to:
9. An obligate root parasite is:
10. The temperature of the Earth would be lower than present if atmospheric CO₂ were absent because CO₂:
Test 6
10 questions • 1 mark each
1. Myrmecophily is a beneficial association between a flowering plant and:
2. A relationship where both organisms benefit but can live independently is:
3. The tiger census can be indirectly estimated using:
4. Temperate evergreen forests are found in the:
5. A population curve for exponential growth is:
6. The process by which a population increases by births is called:
7. The number of individuals leaving a habitat is:
8. A thick layer of blubber in seals functions mainly as an:
9. Plants growing on trees and using them mainly for attachment are:
10. The broad regional unit characterized by major vegetation and associated fauna is a:
Test 7
10 questions • 1 mark each
1. Autecology deals with the relationship of:
2. Capillary water in soil is:
3. The forest canopy is mainly formed by:
4. A well-growing forest herb transplanted into a park may fail because of changed:
5. A triangular population pyramid generally indicates a:
6. A bell-shaped age pyramid represents a:
7. High population growth occurs when there is:
8. The population size an environment can sustain is its:
9. A habitat may contain:
10. Eurythermal organisms tolerate:
Test 8
10 questions • 1 mark each
1. A plant adapted to high light intensity is a:
2. Shade-adapted plants are also called:
3. A desert environment is characterized by:
4. Intraspecific competition occurs between:
5. Interspecific competition occurs between:
6. An interaction in which one organism captures and eats another is:
7. The zone of transition between two communities is called:
8. The increased variety and density at community junctions is called:
9. The ecological hierarchy level above population is:
10. The biosphere includes:
Test 9
10 questions • 1 mark each
1. A plant that supplements nitrogen by trapping insects is an:
2. Utricularia possesses:
3. Dionaea muscipula is commonly called:
4. Drosera is commonly known as:
5. Cuscuta is an example of:
6. A successful parasite generally does not:
7. Rafflesia is described in the source as a:
8. Sandalwood is given as an example of a:
9. Sea anemone and hermit crab show:
10. A shark and sucker fish relationship is:
Test 10
10 questions • 1 mark each
1. Which interaction has one species benefiting while the other is unaffected?
2. Which interaction has one species harmed while the other is unaffected?
3. The plateau phase occurs when:
4. The exponential phase is promoted by:
5. Environmental resistance includes limiting effects of:
6. The ecological niche includes the resources a species uses and its:
7. Coral reefs require conditions including:
8. Mycorrhizae help plants especially in:
9. The sea generally has salinity of about:
10. Water availability strongly affects plant:
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