Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

Multiple choice innate and learned behaviour option a: neurobiology and behaviour biology

Addiction to alcohol drinking leads to ........... diseases.

  1. renal

  2. heart

  3. liver

  4. all of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Addition to alcohol drinking leads to twelve kinds of diseases. Renal, heart, liver is also one of them. Because alcohol intoxication in our bloodstream and as a result the concentration of alcohol is higher in blood and intoxication 

which is injurious to our health.

Multiple choice innate and learned behaviour option a: neurobiology and behaviour biology

More than 25% of drugs are derived from plants. What kind of benefit does this describe?

  1. Ethical value

  2. Aesthetic value

  3. Direct economic value

  4. Indirect economic value
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Human derives countless direct economic benefits from nature that come under narrow utilitarian category.  These benefits include food, fibre construction material etc.

Multiple choice innate and learned behaviour option a: neurobiology and behaviour biology

Which one of the following is the correct statement regarding the particular psychotropic drug specified?

  1. Morphine leads to delusions and disturbed emotions.

  2. Barbiturates cause relaxation and temporary euphoria.

  3. Hashish causes after thought perceptions and hallucinations.

  4. Opium stimulates nervous system and causes hallucinations.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Hasish is commonly called as Charas is an hallucinogen that can affect a persons thought , perception and feelings and causes after thought perception.

Multiple choice innate and learned behaviour option a: neurobiology and behaviour biology

Select the correctly matched pair from the following 

  1. LSD-Narcotic

  2. Heroin-Psychotropic

  3. Benzodiazepam-Pain killer

  4. Amphtamine-Stimulant
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
 Lysergic acid diethylamide (LSD) is a hallucinogenic drug.
 Heroin is a narcotic drug. 
Benzodiazepines are sedatives.
Amphetamine is a stimulant drug.
So, the correct answer is  'Amphetamine-stimulant'.
Multiple choice biology evolution of life darwinism or theories of natural selection darwin's theory of evolution theories of evolution

The theory of natural selection was given by

  1. Lamarck

  2. Alfred Wallace

  3. Charles Darwin

  4. Oparin and Haldane
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
The characteristics that enable enable some organism to survive better than others in the same environment, are said to be selected by nature. Darwin use the phrase 'Natural selection' for this.
So, the correct option is 'Charles Darwin'
Multiple choice biology evolution of life darwinism or theories of natural selection darwin's theory of evolution theories of evolution

Which one of the following sequences was proposed by Darwin and Wallace for organic evolution?

  1. Overproduction, variations, constancy of population size, natural selection

  2. Variations, constancy of population size, over-production, natural selection

  3. Overproduction, constancy of population size, variations, natural selection

  4. Variations, natural selection, overproduction, constancy of population size
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Organisms tend to increase the number of offsprings in the individual for survival in number. Then the interspecific, intraspecific, extra specific struggle for existence occurs. Then small changes occur from the parent generation to the next progenies which acts as a raw material for a source of evolution. And nature selects the useful or adaptive variation.

So, the correct answer is 'Overproduction, the constancy of population size, variations, natural selection'.

Multiple choice biology evolution of life darwinism or theories of natural selection darwin's theory of evolution theories of evolution

Fitness according to Darwin refers to______________.

  1. Number of species in a community

  2. Useful variation in population

  3. Strength of an individual

  4. Reproductive fitness of an organism
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
According to Darwin's theory fitness refers to the Reproductive fitness of an organism because it describes the reproductive success of an individual which is measured as the number of offsprings produce by an individual with respect to specific genotype or phenotype. Fitness theory of Darwin doesn't depend on strength of an organism to survive but the ability of an organism to pass on its genetic material to its offsprings. 
So, the correct answer is 'Reproductive fitness of an organism'.
Multiple choice biology evolution of life darwinism or theories of natural selection darwin's theory of evolution theories of evolution

Darwinism explains all the following except.

  1. Offspring with better traits that overcome competition are best suited for the environment

  2. Variations may or may not be inherited from parents to offspring through genes

  3. Within each species, there are variations

  4. Organisms tend to produce more number of offspring than can survive
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The main drawback of Darwinism is lack of knowledge of heredity. Darwin's theory could not explain the inheritance of variations from parents to offsprings through genes.

So, the correct answer is 'Variations may or may not be inherited from parents to offspring through genes'.

Multiple choice biology evolution of life darwinism or theories of natural selection darwin's theory of evolution theories of evolution

Which of the following statements about natural selection are correct?
(i) Tends to increase the characters that enhance survival and reproduction
(ii) Individuals with better adaptive ability leave more progeny
(iii) Was considered as mechanism of evolution by Darwin.

  1. (i), (ii) and (iii)

  2. (i) and (ii) only

  3. (iii) only

  4. (i) and (iii) only
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
According to Darwin those organisms who are better fit in their environment produce more number of off springs than others or we can say their reproductive rate is higher than the others. These , therefore , will survive more and hence are selected by nature. And this is the method of evolution according to him.
So, the correct option is '(I), (ii), (iii)'