Bryophytes evolved in which of these periods?
How many of these periods belong to the paleozoic era?
Cretaceous, Jurrasic, Triassic, Permian, Carboniferous, Devonian, Silurin
[A] 300 mya
[C] 350 mya
[D] 50 mya
Zosterophyllum belonged to which period?
Which of the following was/were most abundant in cenozoic era?
Which of these features belong/s to mammals?
[A] Viviparous, avoid danger
[B] More intelligent in sensing
What can be said to be the success story of man in evolution?
[A] Language skills
[C] Increase cranial capacity
Conifers were most abundant in:
[A] Paleozoic era
[B] Mesozoic era
[C] Coenozoic era
[D] All eras
Seed ferns evolved from:
Arrange ascending order of extinction (reptiles):
[A] Pelycosaurs, thecodonts, therapside, Dinosaurs
[B] Thecodonts, Dinosaurs, pelycosaurs, therapside
[C] Dinosaurs, therapside, thecodonts, Pelycosaurs
[D] Therapside, thecodonts, pelycosaurs, dinosaurs
When a given population is in genetic equilibrium, then:
[A] Gene pool remains constant.
[B] Allele frequencies in population is constant from generation to generation.
[C] Sum total of all allelic frequencies is 1.
How many factors affect the Hardy-Weinberg equilibrium?
Factors affecting genetic equilibrium are the following except:
[A] Gene flow
[C] Somatic variation
[D] Genetic recombination
Five factors affecting genetic equilibrium are:
[A] Gene flow, genetic drift
[B] Mutation, genetic recombination
[C] Natural selection
[D] All of the above
Natural selection is of following types:
[D] Any of the above