1. Natural increase
2. Population growth
3. Population explosion
4. None of these
Population explosion
1. II and III
2. III and IV
3. I and III
4. I and II
I and II
1. There is a decline in population as boys marry girls only from their own tribe
2. Hereditary diseases like colour blindness do not spread in the isolated population
3. Wrestlers who develop strong body muscle in their life time pass this character on to their progeny
4. There is no change in population size as they have a large gene pool
Hereditary diseases like colour blindness do not spread in the isolated population
1. World population day
2. No tobacco day
3. World environment day
4. World health day
World population day
1. Antibiosis
2. Commensalism
3. Predation
4. Parasitism
Commensalism
1. Predation
2. Interspecific competition
3. Intrespecific competition
4. Proto cooperation
Intrespecific competition
1. Sympatric
2. Allopatric
3. Parapatric
4. Ring species
Sympatric
1. Set of condition that interacts
2. Place where it lives
3. Set of conditions and resources it uses
4. Geographical area that it covers
Set of conditions and resources it uses
1. Both partners are harmed
2. Weaker partner is benefitted
3. Both partners are benefitted
4. None of the partners is benefitted
5.
Weaker partner is benefitted
1. A species which adds upto only a small proportion of the total biomass of community,yet has a huge impact on the community’s organisation and survival
2. A common species that has plenty of biomass,yet has a fairly low impact on the community’s organisation
3. A rare species that has impact on the biomass and on other species in the community
4. A dominant species that constitute a lrge proportion of the biomass and which sffects many other species
A species which adds upto only a small proportion of the total biomass of community,yet has a huge impact on the community’s organisation and survival