Ecotone is...

Ecotone is

a polluted area

the bottom of a lake

a zone of transition between two com- munities

a zone of developing community

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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",):}

TRUEMAN BIOLOGY-NCERT Exemplar Questions +2 (ORGANISMS AND POPULATIONS)-MCQs

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