Gentics And Evoloution - Study Mode
[#246] Consider the following statements regarding the advantages of embryo culture and choose the correct answer: 1. It is the excellent method for understanding the nutritive requirements of the developing embryo 2. Embryo culture gives an insight into the factors which influence embryonic differentiation 3. It promises to be of great economic value as a means of achieving a much wider range of hybrid plants 4. Seeds, which normally remain dormant, can be made to germinate immediately by the help of embryo culture technique
Correct Answer
(D) 1, 2, 3 and 4 are true
[#247] Which one of the following is an example of vestigial organ in man?
Correct Answer
(B) Ear muscles
[#248] Crops usually take nitrogen from the soil in the form of
Correct Answer
(D) Nitrate and ammonia
[#249] According to Darwin's theory of evolution, long necks in giraffes
Correct Answer
(C) give them advantage in finding food, because of which those with long necks survive
[#250] In the history of plant tissue culture, the first tissue to be cultured as a callus came from hybrid
Correct Answer
(B) Tobacco plant