Biology
Grade-9
Easy

Question

Lamarck proposed his theory in which year?

  1. 1809
  2. 1908
  3. 1909
  4. 1820

hintHint:

Lamarckism was proposed by Jean-Baptiste de Monet Lamarck in the year 1809.

The correct answer is: 1809


    • The doctrine, proposed by the French naturalist Jean-Baptiste Lamarck in 1809, influenced evolutionary thought through most of the 19th century.
    • Lamarckism was discredited by most geneticists after the 1930s, but certain of its ideas continued to be held in the Soviet Union into the mid-20th century

    Related Questions to study

    Grade-9
    Biology

    When two or more different looking phenotypes occur in the same population of a species, then it is called:

    When two or more different looking phenotypes occur in the same population of a species, then it is called:

    BiologyGrade-9
    Grade-9
    Biology

    In a finch population, if finches having large beaks and finches having small beaks increase in numbers while finches with average beaks decreases, which pattern of natural selection has occurred?

    In a finch population, if finches having large beaks and finches having small beaks increase in numbers while finches with average beaks decreases, which pattern of natural selection has occurred?

    BiologyGrade-9
    Grade-9
    Biology

    Which of the following is an example of polygenic traits?

    Which of the following is an example of polygenic traits?

    BiologyGrade-9
    parallel
    Grade-9
    Biology

    Variations arise due to:

    Variations arise due to:

    BiologyGrade-9
    Grade-9
    Biology

    Select the statement that correctly explains the graph.

    Select the statement that correctly explains the graph.

    BiologyGrade-9
    Grade-9
    Biology

    What are polygenic traits?

    What are polygenic traits?

    BiologyGrade-9
    parallel
    Grade-9
    Biology

    The following graph shows which type of natural selection?

    The following graph shows which type of natural selection?

    BiologyGrade-9
    Grade-9
    Biology

    Which of the three graphs shows stabilizing selection?

    Which of the three graphs shows stabilizing selection?

    BiologyGrade-9
    Grade-9
    Biology

    Match the following:

    Match the following:

    BiologyGrade-9
    parallel
    Grade-9
    Biology

    Polygenic traits produce a wide range of phenotypes.

    Polygenic traits produce a wide range of phenotypes.

    BiologyGrade-9
    Grade-9
    Biology

    The following graph shows which type of natural selection?

    The following graph shows which type of natural selection?

    BiologyGrade-9
    Grade-9
    Biology

    Researchers have found that most feral cats in a neighborhood have whiskers measuring about 12 cm. If stabilizing selection acts on this population for 15 generations, what would you expect to see??

    Researchers have found that most feral cats in a neighborhood have whiskers measuring about 12 cm. If stabilizing selection acts on this population for 15 generations, what would you expect to see??

    BiologyGrade-9
    parallel
    Grade-9
    Biology

    The characteristics or traits that allow a population to become better suited to its environment is called:

    The characteristics or traits that allow a population to become better suited to its environment is called:

    BiologyGrade-9
    Grade-9
    Biology

    The following graph shows which type of natural selection?

    The following graph shows which type of natural selection?

    BiologyGrade-9
    Grade-9
    Biology

    Identify the type of natural selection:
    Small sized turtles are very weak in order to protect themselves from predators and larger turtles are very slow so as to escape from predators. Average-sized turtles have the highest fitness in this population.

    Identify the type of natural selection:
    Small sized turtles are very weak in order to protect themselves from predators and larger turtles are very slow so as to escape from predators. Average-sized turtles have the highest fitness in this population.

    BiologyGrade-9
    parallel

    card img

    With Turito Academy.

    card img

    With Turito Foundation.

    card img

    Get an Expert Advice From Turito.

    Turito Academy

    card img

    With Turito Academy.

    Test Prep

    card img

    With Turito Foundation.