Homework 8 | Biology homework help

 

Don't use plagiarized sources. Get Your Custom Essay on
Homework 8 | Biology homework help
Just from $13/Page
Order Essay

Complete the following and submit the Word document by midnight Sunday. Remember to include complete citations for all sources used to answer each question.

  1. Are most invasive (exotic) species K-selected or r-selected species? Explain your choice and why that makes sense in terms of their ecological success.
  2. Briefly define a community and an ecosystem and describe how the two are interrelated.
  3. Which of the following levels of organization are in order, from simplest to most complex.
    a.  population, organism, community, ecosystem
    b.  community, ecosystem, population, organism       
    c.  organism, community, population, ecosystem
    d.  population, ecosystem, organism, community
    e.  organism, population, community, ecosystem
  4. Mosses growing on bare rock will eventually help to create soil.  These mosses are involved in ___ succession.
    a.  primary
    b.  secondary
    c.  tertiary
  5. If a farmer sprays a pesticide onto a field and kills half of the insect pests, he has caused a reduction in________.
    a.  field capacity
    b. carrying capacity
    c. population size
    d. More than one of the above
  6. What type of survivorship curve would you expect for a plant species in which only a few seeds are produced and most of these survive to produce adult plants?
    a.  type I
    b.  type II
    c.  type III
  7. An ecological niche is an organism’s_______ in an ecosystem.
    a. location
    b.  habitat        
    c.  resources        
    d.  function
  8. No matter how rapidly populations grow, they eventually reach a limit and begin to stabilize. This is called the ______________.
  9. Unicellular algae live in the tissues of coral animals.  The algae provide food for the coral, while the coral provides a stable home for the algae. This is an example of
    a.  Parasitism
    b.  Commensalism
    c.  Mutualism
  10. The vast majority of energy taken into an ecosystem is____________.
    a.  converted into biomass by plants.
    b.  utilized by secondary consumers.
    c.  lost as heat.
    d.  used by the primary consumers.
    e.  concentrated in the decomposers. 
  11. A farmer is using an insecticide to treat his crops. While most insects do not survive their first exposure to the insecticide some have a gene that enables them to survive. When these survivors reproduce they will likely pass along this resistance to their offspring. This results in an increase in numbers of the insects over time. Which of the following processes applies to this survival?
    a. cloning
    b. mutation
    c. natural selection
    d. genetic engineering
  12. What is the ecological relationship between insects and crops?
    a. mutualism 
    b. competition
    c. predation
  13. Sea anemones growing on the backs of crabs without damaging the crabs are an example of
    a.  Parasitism
    b.  Commensalism
    c.  Mutualism
  14. Which of these is a population density-independent regulating factor?
    a.  Competition
    b.  Predation
    c.  Size of population
    d.  Weather
    e.  Resource availability
  15. Producers are_________.
    a.  Autotrophs
    b.  Herbivores
    c.  Omnivores
    d.  Carnivores
  16. If biological magnification occurs, the ___ will have the highest levels of toxins in their systems.
    a.  producers
    b.  herbivores
    c.  primary carnivores
    d.  top carnivores
  17. Given the amount of sunlight that hits the plants on our planet, and the ability of plants for rapid growth and reproduction, how come we aren’t all hip deep in dead plants?

Calculate your paper price
Pages (550 words)
Approximate price: -

Why Work with Us

Top Quality and Well-Researched Papers

We always make sure that writers follow all your instructions precisely. You can choose your academic level: high school, college/university or professional, and we will assign a writer who has a respective degree.

Professional and Experienced Academic Writers

We have a team of professional writers with experience in academic and business writing. Many are native speakers and able to perform any task for which you need help.

Free Unlimited Revisions

If you think we missed something, send your order for a free revision. You have 10 days to submit the order for review after you have received the final document. You can do this yourself after logging into your personal account or by contacting our support.

Prompt Delivery and 100% Money-Back-Guarantee

All papers are always delivered on time. In case we need more time to master your paper, we may contact you regarding the deadline extension. In case you cannot provide us with more time, a 100% refund is guaranteed.

Original & Confidential

We use several writing tools checks to ensure that all documents you receive are free from plagiarism. Our editors carefully review all quotations in the text. We also promise maximum confidentiality in all of our services.

24/7 Customer Support

Our support agents are available 24 hours a day 7 days a week and committed to providing you with the best customer experience. Get in touch whenever you need any assistance.

Try it now!

Calculate the price of your order

Total price:
$0.00

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.

Our Services

No need to work on your paper at night. Sleep tight, we will cover your back. We offer all kinds of writing services.

Essays

Essay Writing Service

No matter what kind of academic paper you need and how urgent you need it, you are welcome to choose your academic level and the type of your paper at an affordable price. We take care of all your paper needs and give a 24/7 customer care support system.

Admissions

Admission Essays & Business Writing Help

An admission essay is an essay or other written statement by a candidate, often a potential student enrolling in a college, university, or graduate school. You can be rest assurred that through our service we will write the best admission essay for you.

Reviews

Editing Support

Our academic writers and editors make the necessary changes to your paper so that it is polished. We also format your document by correctly quoting the sources and creating reference lists in the formats APA, Harvard, MLA, Chicago / Turabian.

Reviews

Revision Support

If you think your paper could be improved, you can request a review. In this case, your paper will be checked by the writer or assigned to an editor. You can use this option as many times as you see fit. This is free because we want you to be completely satisfied with the service offered.