Self Studies
Self Studies
Self Studies
Self Studies

Organisms and Populations Test - 36

Result Self Studies

Organisms and Populations Test - 36
  • Score

    -

    out of -
  • Rank

    -

    out of -
TIME Taken - -
Self Studies

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Self Studies Self Studies
Weekly Quiz Competition
  • Question 1
    1 / -0
    The permanent decrease in population number occurs due to
    Solution
    There are multiple factors, which affect the size and density of the population. It includes natality, mortality, emigration and immigration. 
    The mortality rate is the number of deaths per thousand individuals per year. It decreases the population size and its density. It is the rate at which people die. It leads to decrease in the population. 
    So, the correct answer is option D.
  • Question 2
    1 / -0
    The type of association exhibited by Hydroactinia and Pagurus is
    Solution
    Commensalism is defined as a type of a relationship between two organisms such that one organism receives a benefit from the other organism and the other is neither benefited nor harmed. Commensalism can be of two types. Ecto and endo commensalism. In ecto commensalism, the organism live in a commensal relationship on the exterior of another organism. Colonies of the hydroids, Hydracintinia echinata stay in the shells of Pagarus for shelter. The Pagarus, in turn, is unaffected. In endo commensalism, the organism resides inside the host.
    Thus, the correct answer is option A.
  • Question 3
    1 / -0
    A biotic factor limiting the growth of population in an aquatic ecosystem is
    Solution
    A biotic factor limiting the growth of population in an aquatic ecosystem is competition as there is involvement of living organisms.
    Competition is an interaction between organisms or species in which the fitness of one is lowered by the presence of another. A limited supply of at least one resource (such as food, water, and territory) used by both can be a factor.
    Abiotic factors that affect the growth of population in an aquatic ecosystem are depth, availability of sunlight, nutrients and oxygen. Therefore the correct answer is option B.

  • Question 4
    1 / -0
    What type of interaction exists between two individuals in which one of them prevents the other from utilizing the particular limited resource of an ecosystem?
    Solution
    Predation refers to the act of feeding on other animals. Commensalism refers to the relationship wherein one organism is benefited while other remain unaffected. Interspecific competition occurs for natural resources which are present in limited quantity. Organisms having more adaptive features that enable them to use the resource wins the interspecific competition. Both partners are benefited from the association in mutualism. Parasitism is the relationship where one organism is benefited at the expense of other. Thus, the correct answer is option C.
  • Question 5
    1 / -0
     The growth in sheep population is slow from an exponential rate because of
    Solution

  • Question 6
    1 / -0
    The type of interaction between an albino plant drawing nourishment from a green plant of same species with the help of vascular connections is known as
    Solution
    Predation refers to the act of feeding on other animals. Commensalism refers to the relationship wherein one organism is benefitted while other remain unaffected. Interspecific competition occurs for natural resources. Both partners are benefitted from the association in mutualism. Parasitism is the relationship where one organism is benefitted at the expense of other. Here, the albino plant is extracting the food of green plant. Thus, the correct answer is option E.
  • Question 7
    1 / -0
    Name the relationship between two organisms where one receives a benefit and other is not affected by it.
    Solution
    In commensalism, one species is benefitted without the other being harmed. It is of two types periodic contact and continuous contact. 
    Some examples of periodic contact commensalism are jackal and hyenas accompanying big cats like tiger or lions for eating small bits of left over of prey's body; sucker fish attached to the underside of shark and feed on small left over when the shark is feeding. 
  • Question 8
    1 / -0
    A relationship between two organisms in which one is benefited while other remains unaffected is known as
    Solution
    Herbivory refers to act of feeding on plants and plant products. 
    Amensalism refers to the relationship wherein one partner is inhibited while other remain nearly unaffected. 
    Parasitism is the relationship where one organism is benefitted at the expense of other. 
    Commensalism refers to the relationship wherein one organism is benefitted while other remain unaffected. 
    Predation refers to the act of feeding on other animals. 
    Therefore, the correct answer is option D.
  • Question 9
    1 / -0
    Which of the following pairs do not show parasitism?
    Solution
    Association of organisms where one of the partners is benefitted at the expense of other is called as parasitism. The given organisms viruses, tapeworm, tuberculosis bacteria in humans and flukes in fishes are all examples of parasites. They survive in the host cells and derive nourishment at the cost of hosts' life. Birds and rhinoceros have symbiotic relationship, where the birds feeds on the insects on the body of the rhinos and provides prevention from infection. 
    Thus, the correct answer is option 'Birds and rhinoceros'.
  • Question 10
    1 / -0
    What type of interaction is shown by a tapeworm residing in human intestine?
    Solution
    Tapeworm resides in the human intestine where ample of pre-digested food is already present. For this reason, tapeworm lacks any gut as it does not need to digest the food rather have integument to allows absorption of nutrients directly from the host small intestine by diffusion. Human is harmed by the presence of tapeworm and develop several gut infections. Association of organisms where one of the partners is benefitted at the expense of other is called as parasitism. Thus, the correct answer is option E.
Self Studies
User
Question Analysis

  • Correct -

  • Wrong -

  • Skipped -

My Perfomance
  • Score

    -

    out of -
  • Rank

    -

    out of -
Re-Attempt Weekly Quiz Competition
Selfstudy
Selfstudy
Self Studies Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Self Studies
Click on Allow to receive notifications
Allow Notification
Self Studies
Self Studies Self Studies
To enable notifications follow this 2 steps:
  • First Click on Secure Icon Self Studies
  • Second click on the toggle icon
Allow Notification
Get latest Exam Updates & FREE Study Material Alerts!
Self Studies ×
Open Now