The survivorship curve of humans is:
1. Type I
2. Type II
3. Type III
4. Type IV

Subtopic:  Response of Organisms to Abiotic Factors (OLD NCERT) |
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Study the four statements (a-d) given below and select the two correct ones out of them:

(a) A lion eating a deer and a sparrow feeding on grain are ecologically similar in being consumers
(b) Predator starfish pisaster helps in maintaining species diversity of some invertebrates
(c) Predators ultimately lead to the extinction of prey species
(d) Production of chemicals such as nicotine, strychnine by the plants are metabolic disorders

The two correct statements are:

1. (c) and (d) 2. (a) and (d)
3. (a) and (b) 4. (b) and (c)

Subtopic:  Population Interactions: Predation |
 69%
From NCERT
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The endosymbiosis between early eukaryotes and the prokaryote lineage would be an example of:

1.Commensalism2.Mutualism
3.Parasitism4.Competition

Subtopic:  Population Interactions: Commensalism, Protocooperation & Mutualism |
 74%
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Consider the following statements (A)-(D) each with one or two blanks.

A. Bears go into __(i)__ during winter to __(ii)__ cold weather
B. A conical age pyramid with a broad base represents __(iii)__ human population
C. A wasp pollinating a fig flower is an example of __(iv)___
D. An area with high levels of species richness is known as __(v)___
 
1.  (ii) - Stable (iv) Commensalism, (v) Marsh
2.  (i) - Aestivation, (v) - Escape, (iii) - Stable,
(iv) - Mutualism
3.  (iii) - Expanding, (iv) - Commensalism,
(v) Biodiversity park
4.  (i)- Hibernation, (ii) - Escape, (iii) - Expanding,
(v) Hot spot

Subtopic:  Response of Organisms to Abiotic Factors (OLD NCERT) | Population Interactions: Commensalism, Protocooperation & Mutualism |
 88%
From NCERT
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Which one is a correct matching of plant, its habitat and the forest type where it normally occurs
1. Prosopis –Tree–shrub
2. Saccharum–grass–forest
3. Shorea robusta–Herb–tropical rain forest
4. Acacia catechu–tree–coniferous forest

Subtopic:  Introduction to Ecology |
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Desert lizards are able to keep their body temperature fairly constant by:
1. Physiological means
2. Anatomical means
3. Biochemical means
4. Behavioral means

Subtopic:  Response of Organisms to Abiotic Factors (OLD NCERT) |
 78%
From NCERT
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Which of the following links ecology to population genetics and evolution?

1.Organismic ecology2.Population ecology
3.Ecosystem ecology4.Biome ecology

Subtopic:  Population Dynamic |
 65%
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Under a particular set of selection pressures, organisms evolve towards the most efficient:

1.Thermoregulation2.Water conservation
3.Respiration4.Reproduction strategy

Subtopic:  Response of Organisms to Abiotic Factors (OLD NCERT) |
 65%
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The invasive prickly pear cactus in Australia was brought under control with the help of:

1.  Snail 2.  Moth
3.  Ladybug 4.  Fungus
Subtopic:  Population Interactions: Predation |
 83%
From NCERT
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When Darwin spoke of the struggle for existence, he was convinced that a potent force in organic evolution is:

1. Intraspecific competition 2. Interspecific competition
3. Intraspecific mutualism 4. Interspecific mutualism
Subtopic:  Population Interactions: Competition |
 82%
From NCERT
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