Gause's competitive exclusion Principle applies only when

1. Species are closely related to each other
2. Competing for same resources
3. Resources are limiting
4. All of these

The Abingdon tortoise in Galapagos Islands became extinct within a decade after goats were introduced on the island apparently due to

1. Superiority of goats
2. Greater browsing efficiency of goats
3. High r value
4. Competitive release

Gause's Competitive Exclusion Principle is challenged by

1. Competitive release
2. Resource Partitioning
3. Mutual exclusion
4. Predation

MacArthur's Warblers living on same tree showed which type of interaction?

1.  Interspecific Competition
2. Co-existance
3. Competitive release
4. Intraspecific Competition

MacArthur's Warblers could coexist due to

1. Behavioural differences in their foraging activities
2. Temporal differences in their foraging activities
3. Spatial differences in their foraging activities
4.  Both A And C

The occurrence of competition in nature, proof for this, comes from

1. Resource Partitioning
2. Co-existance
3. Competitive release
4. Behavioural changes in foraging patterns of warblers

In Connell's elegant field experiments, on the Rocky sea coasts of Scotland which of the following observation was recorded?

1. Barnacle Balanus dominates and exclude the smaller barnacle Chathamalus from that zone
2. Barnacle Chathamalus dominates Barnacle Balanus and exclude them from that zone.
3. Barnacle Balanus dominates and exclude smaller warblers from that zone.
4. Warblers dominate and exclude smaller Balanus from that area.

…….. and ……...appear to be more adversely affected by competition than…….

1. Plants, Carnivores, Herbivores
2. Carnivores, Herbivores, Plants
3. Omnivores, Carnivores, Plants
4. Plants, Herbivores, Carnivores

Host-specific parasites show which ecological phenomenon

1. Co-evolve
2. Competition
3. Predation
4. Mutualism

Parasites often have one or two intermediate hosts or vectors

1. To make life cycle more complicated
2. To facilitate parasitisation of it's primary host
3. To cause advance life cycle
4. To infect a broad range of organisms