Self Studies
Self Studies
Self Studies
Self Studies

Organisms and Populations Test - 35

Result Self Studies

Organisms and Populations Test - 35
  • 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
    What is international migration?
    Solution
    Immigration is the permanent inward movement of individuals from outside into a population. It increases the size of local population. If this movement occurs between two or more nation then it is called international migration.
    So, the correct answer is 'movement of people between countries'
  • Question 2
    1 / -0
    The number of live births per thousand persons in a year is termed as
    Solution
    Birth rate or natality rate is defined as a number of births per 1,000 individuals of a population per year. If a number of births and deaths in a population is equal, the population would be stationary. So, the correct answer is option B.
    So, the correct answer is option B.
  • Question 3
    1 / -0
    Birth rate is the number of live birth per thousand persons in
    Solution

    Natality (birth rate) is the rate of production of new individuals per unit of population or unit time. The population increases when the natality rate is more than the mortality rate. The calculation for determining crude birth rate is (number of births) x 1000 / estimated population at mid-year. So, the correct answer is option D.

  • Question 4
    1 / -0
    Identify the facultative parasite from the below given.
    Solution
    A facultative parasite is defined as an organism that does not depend on any host for completion of its life cycle. One such example is Mycobacterium tuberculosis. It causes tuberculosis. It is a rod-shaped bacteria. Outside the host it exist in cyst form.
    Thus, the correct answer is option B.
  • Question 5
    1 / -0
    An obligate root parasite is
    Solution
    Rafflesia is a parasitic plant that is found in the rainforests of Indonesia. It is holoparasite as they do not produce leaves, stems or roots. Rafflesia is a nonphotosynthetic vine, which grows as individual threads. 
    The plant has its absorptive organ, the haustorium, inside the tissue of the vine. The only part of the plant that can be seen outside the host vine is the five-petaled flower. Thus, the correct answer is option A.
  • Question 6
    1 / -0
    Average number of children that would be born to a woman during her lifetime is known as 
    Solution
    Total fertility rate is the average number of children that would be born to a woman during her lifetime. The total fertility rate varies from region to region. It represents the number of children that would be born to a woman if she were to live to the end of her childbearing years and bear children in accordance with current age-specific fertility rates. 
    Therefore, the correct answer is option D.
  • Question 7
    1 / -0
    Which of the following traps the insect?
    Solution
    Drosera is commonly called sundew plant. In this plant, leaves are circular like a spoon and possess a large number of sticky hairs, called as tentacles. When insects come into contact with tentacles, they arch over and bind it. The captured insect is digested by proteolytic secretions from the leaf. Tentacles show seismonastic movement.
  • Question 8
    1 / -0
    NPP is intended to 
    Solution
    NPP (national population policy) was featured in April 1976, to decrease the birth rate or growth rate. It provides framework for various population control and management methods.  It is chaired by the Prime Minister with the Deputy Chairman Planning Commission as vice chairman. Chief ministers of all states, ministers of the related central ministries, secretaries of the concerned departments, eminent physicians, demographers and the representatives of the civil society are members of the commission. 
    Therefore, the correct answer is 'Decreased birth rate'.
  • Question 9
    1 / -0
    Which of the following helps to maintain species diversity in a community?
    Solution
    Predation interaction provides the necessary stability for species to exist in ecosystems. They do so by keeping the size of species populations in check at supportable levels. When prey is high, predators increase and reduce the number of prey by predation. When predators are high, prey decrease and thus reduce the number of predators by starvation. 
    Thus, the correct answer is option B.
  • Question 10
    1 / -0
    Small fish get stuck near the bottom of a shark and derives its nutrition from it. This kind of association is called as
    Solution
    Correct Answer- B
    Explanation-
    • Commensalism can be defined as the association between two animals in which one gets benefitted from the other while the other organism does not get affected.
    • In the association between small fish and sharks, small fishes get benefited by deriving nutrients from the shark. While shark does not get affected by the presence of small fish. 
    • Hence, the correct answer is B- Commensalism.
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