1. Leech
2. Bed bug
3. Female mosquito
4. Ascaris
Ascaris
1. Requirement and mode of obtaining food only
2. Requirement and mode of obtaining shelter only
3. On the habits of the species only
4. All of the above
All of the above
1. In the presence of keystone species
2. when organisms have quite different ecological niches
3. Among species,whose trophic levels are different
4. When anon_native organism is introduced to the community
When anon_native organism is introduced to the community
1. Herd
2. Family
3. Population
4. Community
Community
1. Community biomass is decreasing
2. The climax community has been reached
3. The first law of thermodynamics (energy is conserved)is not in effect
4. The second law of thermodynamics (in a closed system ,there is ageneral tendency toword disorder)is not in effect
Community biomass is decreasing
1. Sterility
2. Parasitism
3. Reproductive isolation
4. Monogamy
Reproductive isolation
1. Water
2. Oxygen
3. Nitrogen
4. Phosphorus
Oxygen
1. Batesian mimicry
2. Mullerian mimicry
3. Cryptic colouration
4. Interspecific competition
Batesian mimicry
1. Taegetes
2. Black walnut
3. Penicillium
4. Grevillea robusta
Taegetes
1. Trichinnzella
2. Plasmodium
3. Trypanosoma
4. Ascaris
Plasmodium