Tag: zoology

Quizzes (289) Questions (5869)

Questions Related to zoology

Multiple choice zoology human population population ecology population size population and how it changes

Which of the following factors affect human life with increasing to population density?

  1. Availability of food housing and health facilities

  2. Urbanization

  3. Education

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Human population is directly affected by - 

(1) Increases in food production and distribution, 
(2) Improvement in public health (water and sanitation)
(3) Medical technology (vaccines and antibiotics), along with gains in education and standards of living within many developing nations.
So, the correct answer is option A.

Multiple choice zoology human population population ecology population size population and how it changes

If population of a species is transferred to more suitable environment, then it will show 

  1. Protection against enemies

  2. More individuals would survive

  3. Rate of reproduction increases

  4. Unlimitied food would be available
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

If the population of a species is transferred to the more suitable environment, then it will show  protection against enemies. Populations are groups of individuals belonging to the same species that live in the same region at the same time. Population density is a measure of the number of organisms that make up a population in a defined area. In the suitable environment, the species of the population becomes more strong to fight with enemies and protect themselves.

So, the correct answer is option A.

Multiple choice zoology human population population ecology population size population and how it changes

What was the population density of India according to $2001?$

  1. $124$ persons $/km^2$
  2. $224$ persons $/km^2$
  3. $324$ persons $/km^2$
  4. $424$ persons $/km^2$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • Increasing population is a challenging issue for the developing country like India. 
  • If the population increases more than its carrying capacity it may lead to a food crisis resulting in famines, hunger and poor health, an acute shortage of shelter and clothing. 
  • Spreading awareness among the people about the ill-effects of the increasing population may be helpful to control the over increasing population.
  • The population density of India according to 2001 is 324person per square kilometers.

So, the correct answer is option C.
Multiple choice zoology human population population ecology population size population and how it changes

An individual in local hawk populations must increasingly compete for a limited number of nesting sites. This is an example of

  1. A convergent dispersion pattern within the population

  2. A uniform dispersion pattern within the population

  3. A random dispersion pattern within the population

  4. A clumped dispersion pattern within the population

  5. Multiple individuals simultaneously occupying the same nest
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Dispersion pattern is a species-specific feature and shows the spatial relationship between population members present in the specific area. When members of same species inhibit the growth of another individual of the same species present nearby or those with defined territories exhibits the uniform pattern of distribution. In the present example, hawk population faces intraspecific competition for limited nesting sites and therefore will be present at a uniform distance from each other. 

So, the correct answer is option B.

Multiple choice zoology human population population ecology population size population and how it changes

Volume and surface area of a deer is 1,50,000 c$m^3$ and 19,000 c$m^2$ and of a squirrel is 625 c$m^3$ and 530 c$m^2$. The area available for heat loss per c$m^3$ of squirrel will be approximately

  1. Seven times more than the deer

  2. Eleven times less than the deer

  3. Three times more than the deer

  4. Eleven times more than the deer
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Surface area to volume ratio determines heat loss. For deer: 19000/150000 = 0.126. For squirrel: 530/625 = 0.848. Ratio 0.848 / 0.126 is approximately 6.7, which is close to 7.

Multiple choice zoology human population population ecology population size population and how it changes

Density of population (D) is 

  1. $D=\dfrac{S(size)}{W (weight)}$
  2. $D=\dfrac{S(space)}{N (Number)}$
  3. $D=\dfrac{N(number)}{S (space)}$

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
The population density of a place is a number that defines the crowd in that place. It is calculated by dividing the population by the given area.
D = N/S = Number/Space


Multiple choice zoology diseases and immunity active and passive immunity immunity related disorders and problems aids to health

The correct statement about active immunity is:

  1. It provides immediate relief

  2. It is long lasting immunity with no side effects

  3. ATS is used for active immunisation

  4. It cross the placental barrier
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Active immunity is the antibody response produced by the body when exposed to pathogens, vaccines etc. It is a long lasting immunity and has no side effects as these are WBCs produced by the body. 

So, the correct answer is 'it is long lasting immunity with no side effects''

Multiple choice zoology diseases and immunity active and passive immunity immunity related disorders and problems aids to health

Von Behring was awarded the Nobel Prize for the discovery of passive immunity

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Emil von Behring was awarded the first Nobel Prize in Physiology or Medicine in 1901 for his discovery of serum therapy for diphtheria. He and Shibasaburo Kitasato showed that serum from rabbits immunized with tetanus toxin could prevent tetanus in rabbits. Erlich's work demonstrating that increasing doses of bacterial toxins could provide immunity against lethal doses of toxin was the basis for the serum therapy findings. His work also led to the concepts of active and passive immunization, and to his Nobel Prize in 1908 awarded for establishing the field of humoral immunity. It is fitting to highlight Erlich's contribution to the initial conception of passive immunization in 2015, the 100 year anniversary of his death.


So, the correct option is 'True'.

Multiple choice zoology immune system active and passive immunity immunity related disorders and problems diseases and immunity

What type of drug is cyclosporin?

  1. It treats male infertility.

  2. It suppresses immune response while an organ transplantation.

  3. It increases disease resistance capacity of children.

  4. It treats ovarian cysts.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cyclosporin is an immunosuppressive agent used in organ transplant patient. It is produced by fungus Trichoderma polysporum.

So, the correct  option is 'it suppresses immune response while an organ transplantation'.