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(d) Darwin
(d) birds have evolved from reptiles
(a) Thorn of Bougainvillea and potato are homologous
(b) Radish and carrot
(b) DNA undergoes significant changes in germ cell
(d) Radish and Ginger are analogus
(a) the Y chromosome
(c) type of sperm fertilising the egg
(d) X chromosome
(b) female
The theory of evolution of species by natural selection was given by
(d) Darwin
(d) Darwin
See lessSome dinosaurs had feathers but they could not fly but birds have feathers that help them to fly. In terms of evolution it means
(d) birds have evolved from reptiles
(d) birds have evolved from reptiles
See lessSelect the correct statement
(a) Thorn of Bougainvillea and potato are homologous
(a) Thorn of Bougainvillea and potato are homologous
See lessYour mother bought carrot, potato, radish and brinjal. Which of them represent the correct homologus structures?
(b) Radish and carrot
(b) Radish and carrot
See lessNew species may be formed if
(b) DNA undergoes significant changes in germ cell
(b) DNA undergoes significant changes in germ cell
See lessSelect the incorrect statement
(d) Radish and Ginger are analogus
(d) Radish and Ginger are analogus
See lessThe maleness of a child is determined by
(a) the Y chromosome
(a) the Y chromosome
See lessSex of a child is determined by
(c) type of sperm fertilising the egg
(c) type of sperm fertilising the egg
See lessIn human males all the chromosomes are paired perfectly except
(d) X chromosome
(d) X chromosome
See lessA zygote which has an X chromosome inherited from the father will develop into a
(b) female
- (b) female
See less