Home
Class 12
BIOLOGY
A paper on 'natural selection' and 'orig...

A paper on 'natural selection' and 'origin of species'was presented in the Linnaean Society of London in 1858 by

A

Charles Darwin - Robert Malthus

B

Charles Darwin - Alfred R Wallace

C

Hugo de Vries - Robert Malthus

D

Alfred R Wallace - August Weismann

Text Solution

Verified by Experts

The correct Answer is:
B
A paper on .natural selection. and .origin of species. was presented in the Linnaean society of London in 1858 by Charles Darwin and Alfred R Wallace.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ORGANIC EVOLUTION

    ARIHANT PRAKASHAN|Exercise TOPIC 2 PRACTICE QUESTIONS EXAMS. TEXTBOOK.S & OTHER IMP. QUESTION (2 1/2 MARKS QUESTIONS Exam Questions )|11 Videos

  • ORGANIC EVOLUTION

    ARIHANT PRAKASHAN|Exercise TOPIC 2 PRACTICE QUESTIONS EXAMS. TEXTBOOK.S & OTHER IMP. QUESTION (3 1/2 MARKS Questions) |4 Videos

  • ORGANIC EVOLUTION

    ARIHANT PRAKASHAN|Exercise TOPIC 1 (TOPIC TEST 1 )|10 Videos

  • MOLECULAR BASIS OF INHERITANCE

    ARIHANT PRAKASHAN|Exercise CHAPTER TEST |20 Videos

  • ORGANISMS AND ENVIRONMENT

    ARIHANT PRAKASHAN|Exercise Chapter Test (7 MARK Questions) |4 Videos

Similar Questions

Explore conceptually related problems

Given : 1 = Natural selection , 2 = Variations and their inheritance , 3 = Survival of the fittest , 4 = struggle for existence According the Darwinism, which of the following represents the correct squence of events in the origin of new species ? (a) 3,4,1,2 (b) 2,3,1,4 (c) 1,2,3,4 (d) 4,2,3,1

Select the correct term for the following definitions (I,ii,iii,iv). (i) The taxon is liable to become extinct if not allowed to realise its full biotic potential by providing protection from exotic species/human exploitation/habitat deterioration/depletion of food. (ii) The taxon has been completely eliminated or died out from earth. e.g Dodo (iii) The taxon is facing a high risk of extinction in the wild in the near future due to decreasein its habitat, excessive predation or poaching. (iv) They are species with naturally small populations, either localised or thinly scattered, which are always at risk from pests/pathogens/predators/exotic species.

Knowledge Check

  • The work of Mendel was published in 1866 before the Natural Science Society of Brunnn in a paper named

    A
    hydridisation on pea plant
    B
    inheritance pattern in pea plant
    C
    experiments on plant hybridisation
    D
    Mendelian experiments on pea plant

    • Similar Questions

    Explore conceptually related problems

    Select the incorrectly matched pair. (a) UNESCO = United nations Educational Scientific and cultural Organisation (b) CITES = Convention in International Trade in Elite Species (c) IUCN = International Union of Conservation for Nature and Natural Resources (d) WWF =World Wild Fund for Nature

    Since the origin of life on earth, there were five episodes of mass extinction of species. (i) How is the 'sixth extinction', presently in progress, different from the previous episodes ? (ii) Who is mainly responsible for the 'sixth extinction'? (iii) List any four points that can help to overxome this disaster.

    Where would the greatest number of endemic species occur and why ? (a) Small volcanic archipelagos, such as the Galapagos Islands, because the abundance of unoccupied habitats favours the adaptive divergence of colonists from nearby mainland populations. (b) Large oceanic island, such as Australia, because the inhabitants have been isolated from mainland populations for a very long time. (c) On rugged landscapes, such as Patagonia, because of the high levels of natural disturbance by glaciers and earthquakes. (d) Temperate woodlands, such as those in southern England, because of the high levels of disturbance by human activity and the history of artificial selection.

    Read the given statements and select the correct option regarding this. (i) Ecosystem services provided by nature to human beings such as oxygen for respiration, asesthetic value, etc. (ii) Direct economic benefits derived from nature by human beings such as food, medicine, etc. (iii) Every species has an intrinsic value, even if it is not of any economic use to us. With respect to above give codes (i), (ii) and (iii) choose the correct option.

    Select the correct option to fill up balnks. (i) ________is a natural polymer extracted from_____. (ii) The DNA fragments purified by gel electrophoresis are used in constructing______by joining them with_______. (iii) The ligation of alien DNA is carried out at a________. present in one of the two________in a plasmid vector. (iv)_________enzyme remains active during the high temperature induced denaturation of ds DNA (v) DNA fragments are resolved according to their_________ through ______in agarose gel electrophoresis. a) (i) Agarose, sea weeds (ii) recombinant DNA, cloning vector (iii) restriction site, antibiotic resistance genes (iv) Taq polymerase (v) size, sieving effect b) (i) Agarose, sea weeds (ii) Restriction site, antibiotic resistance genes (iii) recombinant DNA, cloning vector (iv) Taq polymerase (v) size, sieving effect c) (i) Agarose, sea weeds (ii) restriction site, antibiotic resistance genes (iii) recombinant DNA, cloning vector (iv) Taq polymerease (v) size, sieving effect d) (i) size, sieving effect (ii) agarose, seaweeds (iii) recombinant DNA cloning vector (iv) Taq polymerase (v) restriction site, antibiotic resistance genes

    Home
    Profile