
Concept explainers
What is niche differentiation?
a. the evolution of traits that reduce niche overlap and competition
b. interactions that allow species to occupy their fundamental niche
c. the degree to which the niches of two species overlap
d. the claim that species with the same niche cannot coexist

Introduction:
Niche differentiation is also called niche partitioning or niche segregation. It is an evolutionary process caused by competition over several generations, which leads to different demarcation of specific areas and creating specific niche allowing both species to coexist. It leads to change in the traits of resource use.
Answer to Problem 1TYK
Correct answer:
The evolution of traits in species reduces overlap and competition. This happens as the species are able to utilize different resources as a result of niche differentiation.
Explanation of Solution
Explanation/Justification for the correct answer:
Option (a) is given that niche differentiation refers to the evolution of traits that change the resource use and, thus, reduces overlap and competition in the niche. This implies that the resource partitioning occurs. The competing species use the environment in a different way and this helps in their coexistence. Hence, option (a) is correct.
Explanation for incorrect answers:
Option (b) is given that the interactions that enable the species to occupy their fundamental niche are known as niche differentiation. There is no niche partitioning in the fundamental niche. Moreover, in the niche differentiation, organisms freely interact with other species and utilize the full range of resources for their survival. So, it is an incorrect option.
Option (c) is given that a degree to which the niches of two species overlap is known as niche differentiation. The degree of niche overlaps depends on the competition, and not on the niche differentiation. So, it is an incorrect option.
Option (d) is given that the claim made by species with the same niche cannot coexist is known as niche differentiation. It is known as the competitive exclusion principle. So, it is an incorrect option
Hence, options (b), (c), and (d) are incorrect.
Therefore, the niche differentiation is an evolutionary process in which the resource partitioning occurs. This results in the reduction in the competition between the species and, thus, niche overlap is also lowered down.
Want to see more full solutions like this?
Chapter 52 Solutions
Biological Science (6th Edition)
- You intend to insert patched dominant negative DNA into the left half of the neural tube of a chick. 1) Which side of the neural tube would you put the positive electrode to ensure that the DNA ends up on the left side? 2) What would be the internal (within the embryo) control for this experiment? 3) How can you be sure that the electroporation method itself is not impacting the embryo? 4) What would you do to ensure that the electroporation is working? How can you tell?arrow_forwardDescribe a method to document the diffusion path and gradient of Sonic Hedgehog through the chicken embryo. If modifying the protein, what is one thing you have to consider in regards to maintaining the protein’s function?arrow_forwardThe following table is from Kumar et. al. Highly Selective Dopamine D3 Receptor (DR) Antagonists and Partial Agonists Based on Eticlopride and the D3R Crystal Structure: New Leads for Opioid Dependence Treatment. J. Med Chem 2016.arrow_forward
- The following figure is from Caterina et al. The capsaicin receptor: a heat activated ion channel in the pain pathway. Nature, 1997. Black boxes indicate capsaicin, white circles indicate resinferatoxin. You are a chef in a fancy new science-themed restaurant. You have a recipe that calls for 1 teaspoon of resinferatoxin, but you feel uncomfortable serving foods with "toxins" in them. How much capsaicin could you substitute instead?arrow_forwardWhat protein is necessary for packaging acetylcholine into synaptic vesicles?arrow_forward1. Match each vocabulary term to its best descriptor A. affinity B. efficacy C. inert D. mimic E. how drugs move through body F. how drugs bind Kd Bmax Agonist Antagonist Pharmacokinetics Pharmacodynamicsarrow_forward
- 50 mg dose of a drug is given orally to a patient. The bioavailability of the drug is 0.2. What is the volume of distribution of the drug if the plasma concentration is 1 mg/L? Be sure to provide units.arrow_forwardDetermine Kd and Bmax from the following Scatchard plot. Make sure to include units.arrow_forwardChoose a catecholamine neurotransmitter and describe/draw the components of the synapse important for its signaling including synthesis, packaging into vesicles, receptors, transporters/degradative enzymes. Describe 2 drugs that can act on this system.arrow_forward
- The following figure is from Caterina et al. The capsaicin receptor: a heat activated ion channel in the pain pathway. Nature, 1997. Black boxes indicate capsaicin, white circles indicate resinferatoxin. a) Which has a higher potency? b) Which is has a higher efficacy? c) What is the approximate Kd of capsaicin in uM? (you can round to the nearest power of 10)arrow_forwardWhat is the rate-limiting-step for serotonin synthesis?arrow_forwardWhat enzyme is necessary for synthesis of all of the monoamines?arrow_forward
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage LearningConcepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
- Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage LearningBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxBiology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning





