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Organisms and Populations Test - 37

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Organisms and Populations Test - 37
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  • Question 1
    1 / -0
    What type of interaction is shown by an algae growing on the shell of a turtle without harming it?
    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. Thus, the correct answer is option B.
  • Question 2
    1 / -0
    Microorganism found in a termite's gut for cellulose digestion is best exemplified by
  • Question 3
    1 / -0
    Which kind of interaction exists between hermit crab and sea anemone in which hermit crab provides for the movement of sea anemone while crab is protected from predators.
  • Question 4
    1 / -0
    A close, long term association between two or more organisms is known as
    Solution
    Symbiosis is any relationship between two or more biological species. Such relationships are usually long term and have a strong impact on the fitness of one or both organisms. Symbiotic relationships are categorized by the benefits. Mutualism is a relationship in which both species benefit, is common in nature. In microbiology, there are many examples of mutualistic bacteria in the gut that aid digestion in both humans and animals.
    Commensalism is a relationship between species in which one benefits and the other is unaffected. Humans are host to a variety of commensal bacteria in their bodies that do not harm them but rely on them for survival (e.g. bacteria that consume dead skin). In parasitic relationships, one species benefits and the other suffers. Most of the microorganisms studied in medical microbiology are parasitic and feed on human tissue. For example, cholera, leishmaniasis, and Giardia are all parasitic microbes.
  • Question 5
    1 / -0
    A relationship in which both the organisms are benefited is known as
    Solution
    Mutualism is a relationship in which both species benefit, is common in nature. In microbiology, there are many examples of mutualistic bacteria in the gut that aid digestion in both humans and animals. Symbiosis is any relationship between two or more biological species. Such relationships are usually long term and have a strong impact on the fitness of one or both organisms. Symbiotic relationships are categorized by the benefits and physical. Commensalism is a relationship between species in which one benefits and the other is unaffected. Humans are host to a variety of commensal bacteria in their bodies that do not harm them but rely on them for survival (e.g. bacteria that consume dead skin). In parasitic relationships, one species benefits and the other suffers. Most of the microorganisms studied in medical microbiology are parasitic and feed on human tissue. For example, cholera, leishmaniasis, and Giardia are all caused by parasitic microbes.
  • Question 6
    1 / -0
    A scientist grew her bacterial colonies in a variety of different concentration of nutrient to determine the concentration at which they grow best. The results of her experiments are summarized in the following bar graph.
    On the basis of the information depicted in the figure, the optimum concentration of nutrient supplement is

  • Question 7
    1 / -0

    Read the passage and answer the following question.

    In the laboratory, a scientist examines the growth of two species of Plankton, A and B, grown either together or separately (Figure 1). Both plankton feed on the same algae and the densities of the populations are examined over time. The culture is started in each case with the same number of plankton, and in the mixtures with a 1:1 ratio of each species. In another experiment, the growth of two algae, Species 1 and Species 2, is examined, with the algae grown either separately or together(Figure 2)

    Which of the following represents the relationship between Species A and B in Figure 1?

  • Question 8
    1 / -0
    What is true about panting (a means of cooling used by many animals)?
    Solution
    Thermoregulation is the ability of an organism to maintain its body temperature in accordance with the fluctuating environmental temperature. Panting is a method which is mainly used by several mammals, birds, and reptiles to release the heat produced inside the body due to high metabolic rate. It involves the release of an enormous amount of water vapour through the nasal passage, mouth, and lungs which lead to cooling. The process of thermoregulation helps in homeostasis.

  • Question 9
    1 / -0
    A type of relationship in which one organism is benefited while other is harmed is called as
    Solution
    In parasitic relationships, one species benefits and the other suffers. Most of the microorganisms studied in medical microbiology are parasitic and feed on human tissue. For example, cholera, leishmaniasis, and giardia are all caused by parasitic microbes. Symbiosis is any relationship between two or more biological species. Such relationships are usually long term and have a strong impact on the fitness of one or both organisms. Symbiotic relationships are categorized by the benefits and physical. Mutualism is a relationship in which both species benefit, is common in nature. In microbiology, there are many examples of mutualistic bacteria in the gut that aid digestion in both humans and animals. Commensalism is a relationship between species in which one benefits and the other is unaffected. Humans are host to a variety of commensal bacteria in their bodies that do not harm them but rely on them for survival (e.g. bacteria that consume dead skin). Thus, the correct answer is option C.
  • Question 10
    1 / -0
    When a bird consumes insect pests from a rhino's back, what is the relationship between bird and rhino?
    Solution

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