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BIOLOGY
Ecotone is...

Ecotone is

A

a polluted area

B

the bottom of a lake

C

a zone of transition between two communities

D

a zone of developing community

Text Solution

Verified by Experts

The correct Answer is:
C
The adjacent biotic (natural) communities, generally do not posses a fine demarcation edge or line between them. The adjacent of two communities is represented by population of both the communitis, and this transtion zone between two communities is referred as ecotone.
Rest of the options do not define ecotone (zone of transition).
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How do you distinguish the following ? (a) Ecotones and edge effect (b) Keystone species and critical link species (c) Ectoparasite and Endoparasite

What are ecotones ?

Define Ecotone.

Species found exclusively in ecotone are called

In ecotone some species become abundant

Assertion : The community of an ecotone commonly contains the organisms of each of the overlapping communities and in addition the organisms which are restricted to the ecotone. Reason : The tendency for increased variety and density at community junctions is known as the edge effect.

Match list-I with list-II and select the correct answer using the codes given below the lists {:(,"List-I",,"List-II"),("A.","Ecotone",1.,"Running water"),("B.","Benthic",2.,"Replacement of one community by another"),("C.","Sere",3.,"Transitional zone between two communities"),("D.","Lotic",4.,"Zone found at the bottom of the sea"):}

Match List I with List II and select the correct answer using the codes given below the lists: {:(,"List I",,"List II",),(A,"Ecotone",1,"Running water ",),(B,"Benthic",2,"Replacement of one community by another",),(C,"Sere",3,"Transitional zone between two communities",),(D,"Lotic",4,"Zone found at the bottom of the sea",):}

NCERT EXEMPLAR-ORGANISMS AND POPULATIONS-Organisms And Populations
  1. Autecology is the

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  2. Ecotone is

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  3. Biosphere is

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  4. Ecological niche is

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  5. According to Allen's Rule, the mammals from colder climates have

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  6. Salt concentration (salinity) of the sea measured in parts per thousan...

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  7. Formation of tropical forests needs mean annual temperature and mean a...

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  8. Which of the followinf forest plants controls the loght conditions at ...

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  9. What will happen to a well growing herbaceous plant in the forest if i...

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  10. If a population of 50 Paramecium present in a pool increases to 150 af...

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  11. What would be the percent growth or birth rate per individual per hour...

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  12. A population has more young individuals compared to the older individu...

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  13. What parameters are used for tiger census in our country's national pa...

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  14. Which of the following would necessarily decrease the density of a pop...

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  15. A protozoan reproduces by binary fission. What will be the number of ...

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  16. In 2005, for each of the 14 million people present in a country, 0.028...

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  17. Amensalism is an association between two species where

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  18. Lichens are the associations of

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  19. Which of the following is a partial root parasite ?

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  20. Which one of the following organisms reproduces sexually only once in ...

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