Environmental science chapter 4 practice quiz Questions & Answers
2 views 0 purchase
Course
Environmental science
Institution
Environmental Science
Explain how tolerance limits to environmental factors determine distribution of a highly specialized species such as the saguaro cactus. - ANSWERSTolerance limits are the minimum and maximum levels of a specific environmental factor that an organism can tolerate. The saguaro cactus has very specifi...
Environmental science chapter 4
practice quiz Questions & Answers
Explain how tolerance limits to environmental factors determine distribution of a highly
specialized species such as the saguaro cactus. - ANSWERSTolerance limits are the
minimum and maximum levels of a specific environmental factor that an organism can
tolerate. The saguaro cactus has very specific and limited tolerance limits, which means
that it can't really survive in many environments that don't fit its limits.
Productivity, diversity, complexity, resilience, and structure are exhibited to some extent
by all communities and ecosystems. Describe how these characteristics apply to the
ecosystem in which you live. - ANSWERSProductivity--not that much, I live in a dry area
Diversity--medium
Complexity--don't know
Resilience--strong, because of wildfires
Define selective pressure and describe one example that has affected species where
you live. - ANSWERS?
Define keystone species and explain their importance in community structure and
function. - ANSWERSKeystone species--species which has a disproportionate amount
of influence on their ecosystem.
They keep the ecosystem stable and running, and their removal would affect all species
of the ecosystem.
The most intense interactions often occur between individuals of the same species.
What concept discussed in this chapter can be use to explain this phenomenon? -
ANSWERSIntraspecific competition--competition amongst members of the same
species.
Explain how predators affect the adaptations of their prey. - ANSWERSPredators
provide selective pressure for their prey to evolve to evade capture better, and in turn
the predator evolves to become a better hunter.
Competition for a limited quantity of resources occurs in all ecosystems. This
competition can be interspecific or intraspecific. Explain some of the ways an organism
might deal with these different types of competition. - ANSWERS1) Changing niches
2) Death of one population
3) Intraspecific; evolution (sympatric speciation)
Describe the process of succession that occurs after a forest fire destroys an existing
biological community. Why may periodic fire be beneficial to a community? -
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Bestgrades2. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.49. You're not tied to anything after your purchase.
