Q. 665.0( 1 Vote )
The farmers have been cultivating a food plant X for over two thousand years and have produced as many as five entirely different looking vegetables A, B, C, D and E from it.
(a) What could the plant X be?
(b) What are A, B, C, D and E?
(c) What is the process of evolution involved in this example known as?
(a) X- Wild Cabbage (Brassica oleracea) is made to produce 5 different varieties of vegetables by artificial selection.
(b) These 5 different looking vegetables are Cabbage, Kohlrabi, Kale, Broccoli, and Cauliflower.
(c) The process of evolution involved in this example is known as Artificial Selection. Artificial Selection is the intentional reproduction of individuals having desired characteristics.
Rate this question :
Out of bacteria, spider, fish and chimpanzee, which organism has a better body design in evolutionary terms? Give reason for your answer.Lakhmir Singh & Manjit Kaur- Biology
Name the various tools of tracing evolutionary relationships which have been used for studying human evolution.Lakhmir Singh & Manjit Kaur- Biology
Name two animals having homologous organs and two having analogous organs. Name these organs.Lakhmir Singh & Manjit Kaur- Biology
What are fossils? Giving one example, explain how fossils provide evidence for evolution.Lakhmir Singh & Manjit Kaur- Biology
Can the wing of a butterfly and the wing of a bat .be considered homologous organs? Why or why not?Lakhmir Singh & Manjit Kaur- Biology
Match the terms given in column I with those given in column II :
With the help of an example, explain how variation leads to evolution.Lakhmir Singh & Manjit Kaur- Biology
A gradual change, over a long period, in a form of life is known as :Lakhmir Singh & Manjit Kaur- Biology
"Only variations that confer an advantage to an individual organism will survive in a population". Do you agree with this statement? Give reason for your answer.Lakhmir Singh & Manjit Kaur- Biology
In what way is analogous organ evidence for evolution?Lakhmir Singh & Manjit Kaur- Biology