MCQ on Ecosystem Office 1
 (Ecology MCQ 01)

(1). The natural place where the organism or communities live is known as:
 a.       Niche
  b.      Habit
  c.       Habitat
  d.      Biome

(ii). Whatsoever features of an organism or its part which enable information technology to exist under weather of its habitat is known as:
a.       Adaptive variation
 b.      Adjustment
 c.       Acclimatization
 d.      Adaptation

(three). According to Shelford'south low of tolerance, an organism with wide tolerance limit for environmental factor usually prove:
a.       Broad distribution with low population size
 b.      Wide distribution with loftier population size
 c.       Narrow distribution with low population size
 d.      Narrow distribution with high population size

(4). Plants which abound under direct sunlight and those growing under shade are called as _______ and _______ respectively.
a.       Heliophytes and Sciophytes
 b.      Sciophytes and Heliophytes
 c.       Psamophytes and Heliophytes
 d.      Heliophytes and Psamophytes

(5). Plants which blooms when the lite duration is more than than 12 hours per day is known as:
a.       Long 24-hour interval plants
 b.      Short day plants
 c.       Twenty-four hours neutral plants
 d.      Long twenty-four hours and short dark plants

(6). Which of the following is not a feature of Heliophytes?
 a.       Long lateral roots
 b.      Numerous rootlets
 c.       Stem with long inter-nodes
 d.      Vigorous flowering and fruiting

(seven). The process of vernalization (induction of flowering by cold handling) is effective in ______
a.       Hot countries
 b.      Common cold countries
 c.       Only in tropical countries
 d.      Only in sub-tropical countries

(8). The plant of common cold or temperate habitat require depression temperature for their growth are called:
a.       Megatherms
 b.      Mesotherms
 c.       Microtherms
 d.      Ekistotherms

(9). In thermal stratification where the water body is divided into several layers, the middle region which shows vertical temperature change are called:
a.       Epilimnion
 b.      Mesolimnion
 c.       Hypolimnion
 d.      Metalimnion

(10). In a pond ecosystem, the lesser expanse where the production is bottom than the respiration (P/R <1) is termed as:
a.       Limnetic zone
 b.      Profundal zone
 c.       Benthic zone
 d.      Tidal zone

xi. The water vapour present in the unit of measurement volume of air is chosen:
a.       Relative humidity
 b.      Static humidity
 c.       Absolute humidity
 d.      Total humidity

12. The most probable vegetation in an area which receives threescore to 120 cm annual rain fall volition be:
a.       Semi-barren grass land
 b.      Dry subtropical grassland or savanna
 c.       Boiling subtropical forest
 d.      Tropical rainforest

13.  The percentage of oxygen and carbon dioxide in the atmosphere is:
a.       20.95 % and 0.04%
 b.      20.0% and 0.40%
 c.       20.95% and 0.004%
 d.      20.0% and 0.44%

14.  Which of the following is not a characteristic of 'r' selected species
a.       Produce large number of progenies
 b.      Reproduce quickly
 c.       Low survival rate of progenies
 d.      Parental care

15.  The amount of organic matter present at a given time per unit of measurement area is called:
a.       Standing crop
 b.      Standing quality
 c.       Carbon content
 d.      Carbon foot-print

MCQ on Ecosystem: Introduction Office – two

More Ecology MCQs

Ecology Quizzes

Respond key and explanations

one. Ans. (c). Habitat

ii. Ans. (d). Adaptation

3. Ans. (b). Wide distribution with high population size

4. Ans. (a). Heliophytes and Sciophytes

Psamphytes: Plants growing on sand

v. Ans. (a). Long solar day plants

Long twenty-four hour period plants are also called as short dark plants

6. Ans. (c). Stem with long inter-nodes

Heliophytes are plants growing nether direct sunlight. They produce short inter-nodes

vii. Ans. (b). Cold countries

viii. Ans. (c). Microtherms

9. Ans. (d). Metalimnion

10. Ans. (b). Profundal zone

xi. Ans. (c). Absolute humidity

12. Ans. (c). Humid sub-tropical forest

13. Ans. (a). 20.95 % and 0.04%

14. Ans. (d). Parental intendance

15. Ans. (a). Standing crop

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