List I (Interaction) |
List II (Species A and B) |
||
A. | Mutualism | I. | +(A), O(B) |
B. | Commensalism | II. | –(A), O(B) |
C. | Amensalism | III. | +(A), –(B) |
D. | Parasitism | IV | +(A), +(B) |
Options: | A | B | C | D |
1. | III | I | IV | II |
2. | IV | II | I | II |
3. | IV | I | II | III |
4. | IV | III | I | II |
Statement I: | Gause's 'Competitive Exclusion Principle' states that two closely related species competing for the same resources cannot co-exist indefinitely and competitively inferior one will be eliminated eventually. |
Statement II: | In general, carnivores are more adversely affected by competition than herbivores. |
List I (Interacting species) | List II (Name of Interaction) | ||
A. | A Leopard and a Lion in a Forest/grassland | I. | Competition |
B. | A Cuckoo laying an egg in a Crow's nest | II. | Brood parasitism |
C. | Fungi and root of a higher plant mycorrhizae | I. | Mutualism |
D. | A cattle egret and a Cattle in a field | IV. | Commensalism |
Options: | A | B | C | D |
1. | II | III | I | IV |
2. | I | II | III | IV |
3. | I | II | IV | III |
4. | III | IV | I | II |
Inspite of interspecific competition in nature, which mechanism the competing species might have evolved for their survival?
1. | Mutualism | 2. | Predation |
3. | Resource partitioning | 4. | Competitive release |
Match the items in Column-I with those in Column-II:
Column-I | Column-II | ||
(a) | Herbivores-Plants | (i) | Commensalism |
(b) | Mycorrhiza-Plants | (ii) | Mutualism |
(c) | Sheep-Cattle | (iii) | Predation |
(d) | Orchid-Tree | (iv) | Competition |
Select the correct option from the following:
Options: | (a) | (b) | (c) | (d) |
1. | (iv) | (ii) | (i) | (iii) |
2. | (iii) | (ii) | (iv) | (i) |
3. | (ii) | (i) | (iii) | (iv) |
4. | (i) | (iii) | (iv) | (ii) |
Carnivorous animals - lions and leopards, occupy the same niche but lions predate mostly larger animals and leopards take smaller ones. This mechanism of competition is referred to as:
1. Character displacement
2. Altruism
3. Resource partitioning
4. Competitive exclusion
The principle of competitive exclusion was stated by?
1. C. Darwin
2. G. F. Gause
3. MacArthur
4. Verhulst and Pearl
In which of the following interactions both partners are adversely affected?
1. | Competition | 2. | Predation |
3. | Parasitism | 4. | Mutualism |
According to Darwin, organic evolution is due to:
1. | Interspecific competition. |
2. | Competition within closely related species. |
3. | Reduced feeding efficiency in one species due to the presence of interfering species. |
4. | Intraspecific competition. |