Which of the following is not correct with respect to parasites?

1. Harm the host

2. Reduce survival, growth of the host.

3. Doesn't affect population density of host as no effect on reproduction ability of the host

4. Render host more vulnerable to predation by making it physically weak.

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 excludes smaller warblers from that zone.

4. Warblers dominate and exclude smaller Balanus from that area.

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

1. Interspecific Competition

2. Co-existance

3. Competitive release

4. Intraspecific Competition

…….. 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

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

1. Resource Partitioning

2. Co-existance

3. Competitive release

4. Behavioral changes in foraging patterns of warblers

The human liver fluke

1. A trematode parasite

2. Depends on two intermediate hosts- snail and Dog

3. Both 1 and 2

4. Simple life cycle

MacArthur's Warblers could coexist due to

1. Behavioral differences in their foraging activities

2. Temporal differences in their foraging activities

3. Spatial differences in their foraging activities

4. Both 1 and 3

Parasites often have one or two intermediate hosts or vectors

1. To make a life cycle more complicated

2. To facilitate parasitization of its primary host

3. To cause advanced life cycle

4. To infect a broad range of organisms