The sting of honey been is formed by modification of ovipositor while sting of scorpion is formed by modification of last abdominal segment whether this statement is:
A.TRUE
B.FALSE
C.Partially false
D.No idea
Category: Organic Evolution Mcqs
Reptiles dominated during:
A.Mesozoic era
B.Cenozoic era
C.Paleozoic era
D.Proterozoic era
The zygotes of all metazoans are single celled and quite comparable with the bodies of simple protozoans. This fact indicates that:
A.Metazoans formed protozoans
B.Origin of metazoans has been from protozoan ancestors
C.Both protozoa and metazoa are not related to each other
D.Protozoans after degeneration formed metazonas
Which of the following may lead to evolution:
A.Deletion
B.Translocation
C.Inversion
D.All of these
The statement that evolution of living organism follows the changes in environment is:
A.TRUE
B.FALSE
C.Rarely true
D.No idea
Sting of Honey Bee and sting of Scorpion are____________________?
A.Homologous organs
B.Analogous organs
C.Primordial organs
D.Rudimentary organs
Ontogemy means:
A.Life cycle of individual
B.Life cycle of all the animals of different groups
C.Both (a) & (b)
D.None of these
The homologous organs are the organs:
A.Having similar origin
B.Having similar function
C.Having more use
D.None of these
Which of the following statements are true:
A.Two chambered embryonic heart becomes three chambered in Amphibians and Reptiles during the course of later embryonic development
B.Two chambered embryonic heart becomes four chambered in birds and mammals during further course of development
C.Both (a) & (b)
D.None of these
Legs of pliohippus had well developed:
A.One digit
B.Two digit
C.Three digit
D.Four digit
