The idea of spontaneous generation is essentially correct in regard to
origin of life
evolution
mutations
embryology
Correct Answer :
A. origin of life
Related Questions
Geological evidence of most primitive mammals is found in
Centred Africa
China
India
Australia
Co-worker of Darwin was
Bateson
Mendel
Wallace
Lamarck
Peking man is known as
Homo sapiens
Pithecanthropus
Sinanthropus
None of these
We use the term hybrid breakdown when the
offspring of hybrids are inviable or sterile
a hybrid zygote is formed but it fails to develop
hybrid adults fail to produce functional gametes
sperms and ova of different species of animals are unable to fuse
Which is a vestigeal organ of python
Nose
Scales
Teeth
Hindlimbs
The age of a fossil may be determined most accurately
by comparing it to living similar forms
by radioactive dating
by rate of erosion of the strata
from the depth of strata at which it is found
Which is not a vestigeal organ
Wisdom teeth
Fossa ovalis
Muscles of ear pinna
Ileum
Survival due to geographic isolation is best exemplified by mammalian fauna of
Oriental region
Ethiopian region
Australian region
Palaearctic region
The function affected by point mutation in p-globin in sickle cell anaemia is
protein folding
transcriptional control
nonsense mutation
none of these
A starfish with six arms, may be a case of
variation
evolution
autotomy
mutation
The idea of "Survival of fittest" was given by
Darwin
Herbert Spencer
Mai thus
Lovell
Which animals dominated in Paleozoic era ?
Fishes
Amphibians
Reptiles
Birds
In forming the theory of evolution by Natural Selection, Charles Darwin was greatly influenced by
environmental factors
mutations
malthu's ideas on population control
all of these
A fossil is a
laboratory preserved animal
dead animal of the past
organic relic of the past
stuffed animal
The diploid number of chromosome in Chimpanzee, Gorilla and Orangutan is
2n = 44
2n = 46
2n = 48
none of these
Darwin proposed his theory of natural selection on the basis of
Mutation
Environmental factors
Lama's theory
Chromosomal aberrations
The study of Galapagos Finches shows
adaptive radiation
adaptive convergence
use and disuse of organs
none of these
Ontogeny recapitulates phylogeny is the statement relating to
morphology
physiology
taxonomy
embryology
An animal is more likely to be preserved as a fossil if it contains large quantities of
cartilage and bone
proteins
inorganic materials
keratin materials
A connecting link between Annelids and Arthropods is
Peripatus
Palaemon
Limulus
Heteronereis
Role of isolation in evolution is
differentiation of species
maintenance of species
evolutionary divergence
extermination of species
Some of the important evidences of organic evolution are
occurrence of homologous and vestigeal organs
occurrence of analogous and vestigial organs
occurrence of homologous and analogous organs
occurrence of analogous oragans only
Doubis in 1891 found the fossil of Java ape man. It is
Sinanthropus pekinensis
Homoerectus
Homo rhodesiensis
Homo spisaens
Amphibians appeared and became dominant in the
Mesozoic era
Coenozoic era
Palaeozoic era
None of these
Human beings living in different geographical areas and under different environmental conditions are kept under one species because
they show adaptive variations to their environment
they share the common karyotype
they can freely interbreed and share a common gene pool
their features are different yet they are similar essentially
The earliest ancestor of horse from early Eocene period is
miobibbus
eohippus
merychippus
pliohippus
Species were regarded as unchangeable by
Lamarck
Morgan
Charles Darwin
Many biologists of 19th century
Which were dominant during Mesozoic era
Pisces
Birds
Ruling mammals
Ruling reptiles
Along with reduction in the number of toes in the modern horse, the other most significant evolutionary change is
increase in the size of eyes
increase in the size of brain
straightening of back
change in dentition from browsing to grazing
The first mammal arose
after the extinction of dinosaurs
before the origin of dinosaurs
along with dinosaurs
from the dinosaurs