Which one of the following gactors is respobsible for the evolution of organisms according to Neo-Darwinism:
A.Mutations
B.Natural selection
C.Mutations and natural selection
D.Either mutations or natural selection
Category: Organic Evolution Theories Mcqs
The ultimate source of organic variations is:
A.Sexual reproduction
B.Hormonal action
C.Natural Selection
D.Mutation
Adaptation of a species is its:
A.Acquired characters
B.Ecdyris
C.Metamorphosis
D.Hereditary characters
The book Philosophie Zoologique written by Jean Baptist de Lamarck was published in the year:
A.1809
B.1850
C.1858
D.1859
Cause of struggle for existence among animals is:
A.That excessive reproduction leads to increase in number
B.That there is less availability of food to organisms
C.That there is lack of spaces for living
D.Due to all of these reasons
The evolution of a species can be considered as the sum total of adoptive changes of species preserved by:
A.Mass conservation
B.Laws of motion
C.Evolution
D.Natural selection
According to Weismann theory which of the following facts will be correct:
A.Changes occurring in somaplasm during life time are inherited
B.Germplasm continues generation after generation as impartial matter whereas somaplasm only functions to house the germplasm
C.In the struggle for existence due to over production, environmental effects the individuals which are best suitable to get maximum chances for mating
D.None of these
Lamarck’s theory of organic evolution was published in the book entitled:
A.Systima Naturee
B.Philosophic Zoologique
C.Origin of species
D.None of these
Lamarck’s Theory of Organic Evolution is based upon:
A.Effect of environment
B.Use and disuse of body parts
C.Inheritance of acquired characters
D.All of these
From the experiments upon mice by cutting the tails of new-born mice for more than twenty generations and yet no hereditary effect, Weismann could conclude:
A.Theory of survival of fittest
B.Theory of continuity of germplasm
C.Inheritance of acquired characters
D.Isolation plays significant role in evolution
