Answer:
density dependent factors are competition, predation, parasitism, disease/ independent factors are natural disaster, seasonal cycle, unusual Weathers
Answer:
The correct answer is: enhanced zones of inhibition in the area between two adjacent disks.
Explanation:
- According to the question, the two antibiotics show the property of Synergism.
- Synergism can be defined as the property of two drugs, where the efficiency of activity (killing the bacteria) obtained on using the two drugs together is far more than the efficiency obtained by using individual drugs separately.
- In the disk diffusion method, the efficiency in activity (killing of bacteria) of two drugs is determined by plating a nutrient agar media with the particular target bacteria and adding the two antibiotics in two discs separated from each other by a certain distance.
- Both the antibiotics diffuse into the agar media from the discs and kill the target bacteria.
- Zone of inhibition can be defined as the circular clear zone on the nutrient agar plate obtained after allowing the bacteria to grow for the required period of time. This is the region where no bacteria grow as they are killed by the antibiotics used.
- Depending upon the efficiency of the antibiotic used and also its ability to diffuse into the nutrient agar medium, bacteria tends to grow near the periphery of the nutrient agar plate where the antibiotic fails to reach.
- In the question, as the two antibiotics used show synergistic effect, the region on the nutrient agar plate in between the two discs, where both the antibiotics are able to percolate will show a larger zone of inhibition.
Options:
a) They have different sets of genes but the same set of proteins. (b) They have different sets of genes and different sets of proteins. (c) They have the same set of genes and the same set of proteins. (d) They have the same set of genes but different sets of proteins.
Answer:
d) They have the same set of genes but different sets of proteins
Explanation: Auxins are found in leaves cytokines are found in root tips and shoot tissues.
desert, open ocean, lake, tropical rain forest
Explanation:
The net primary productivity tells us about how productive an ecosystem is. It is usually derived by the difference between the amount of carbon dioxide that producers used to the amount they release during their cellular respiration.
- The rainforest is the biome with the highest amount of net productivity.
- The amount of sunlight and organic matter used up during photosynthesis is very large.
- The tropical rain forest receives the highest amount of sunlight because the sun is overhead here.
- This provides energy to drive photosynthetic process in the presence of other available resources.
- Deserts are bare and lacks plants due to the extreme conditions here not favorable to life.
- The open ocean productivity is restricted to the photic zone where light is only able to reach
- Lakes are highly productive ecosystems.
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