What is the relationship between the wing of a bird and the wing of a bat?
They are homologous because they represent modified forms of a trait present in a common ancestor (forelimbs)
They are analogous because while each carries out the same function (fight), this trait has arisen independently as a result of convergence
There is no relation between the wings of bird and wings of bat
They both have undergone severe mutation
Related Questions
Eye of Octopus and mammals appears quite similar. They are
Homologous organs
Analogous organs
Vestigial organs
None of these
Age of fossils in the past was generally determined by radio-carbon method and other methods involving radioactive elements found in the rocks. More precise methods, which were used recently and led to the revision of the evolutionary period for different groups of organisms, include
Study of carbohydrates/ proteins in fossils
Study of conditions of fossilization
Electron spin resonance (ESR) and fossil DNA
Study of carbohydrates/proteins in rocks
Which statement about the comparison of mitosis and meiosis is FALSE?
Mitosis results in two diploid cells, while meiosis results in four haploid cells.
Mitosis involves one cell division, while meiosis involves two.
Mitosis produces genetically identical cells, while meiosis produces genetically diverse cells.
Homologous chromosomes behave similarly in mitosis and meiosis.
Evidence that evolution of life forms has indeed taken place on earth has come from
Fossils study (palaeontological evidence)
Morphological and comparative anatomical study
Biochemical study
All of the above
The theory that evolutionary change is slow and continuous this phenomenon is known as
Punctuated equilibrium
Geographic isolation
Speciation
Gradualism
Lamarckism cannot explain
Webbed toes in aquatic birds
Weak muscles in the son of a wrestler
Long narrow and limbless body of snakes
Heterophylly
Stings of honey bee and the stings of scorpion are: I. analogous organs, II. Atavistic organs, III. homologous organs, IV. vestigial organs. The correct combination is
III and IV
II and III
I only
I and III
Fossilized faecal material of animals are known as
Coprolites
Compressions
Moulds
Casts
Which of these illustrates divergent evolution in plants?
Thorns of Bougainvillea and tendrils of Cucurbita
Spines of cacti and thorns of roses
Wings of bats and birds
Sweet potato and potato
Although all mammals have some common characters, but they shows conspicuous differences due to
Genetic drift
Convergence
Divergence
Normalisation
