3 Canvas Question 7 The following are all characteristics of adaptive radiation,
ID: 275314 • Letter: 3
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3 Canvas Question 7 The following are all characteristics of adaptive radiation, EXCEPT O It involves groups of related organisms O Organisms colonize new areas with low ecological competition O High rates of speciation as organisms adapt to new ecological roles O The adaptive radiation of one group can drive the radiation or another group O It decreases the diversity of the community Question 8 How can we confirm that the radiometric dating gives an accurate estimate of the age of rocks? O Radiometric dating is a method that has been used for years by geologists. O The rate of decay of radioisotopes with very short half-lives can be measured in the lab. O All radioisotopes decay at the same rate Estimated ages of rocks can be confirmed using different radioisotopes with similar half-lives Estimated ages of rocks are consistent with the known age of the EarthExplanation / Answer
Q No.7 - 4th option is the answer , as the radiation (i.e. the migration and settlement ) of one group is Independent of other groups and doesn't affect the others in typically found scenarios
Q.No. 8 - Actually the best answer would have been .that a certain radioisotope decays at the same rate which is measurable , but since such an answer is not there , the best is 5th option .
Q.No.9 -3rd option is correct as it describes the role of the said gene .Hox genes direct the developmental plan of some body parts , and a change in them caused the new body plan to develop .
Q.No.10 - 1st option is correct as , for an evidence of extinction , you must be able to prove that they no longer exist anymore , anywhere
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