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Question
How do we compute the age of a rock?
Solution
Age of rock is computed by radiocarbon dating, potassium-argon dating, uranium-lead dating and rubidium-strontium dating method.
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RELATED QUESTIONS
State the connecting links between Peripatus with Annelida and Arthopoda.
(a) Select the analogous structures from the combination given below:
(i) Forelimbs of whales and bats
(ii) Eyes of octopus and mammals
(iii) Tuber of sweet potato and potato
(iv) Tuber of Bougainvillea and tendrils of Cucurbita
(b) State the kind of evolution they represent
Select two pairs from the following which exhibit divergent evolution. Give reasons for your answer.
(i) Forelimbs of cheetah and mammals
(ii) Flippers of dolphins and penguins
(iii) Wings of butterflies and birds
(iv) Forelimbs of whales and mammals
In a class, students were asked to observe the models/slides/pictures of the skeletons of forelimbs and wings of different organisms. After the observations the students made the following groups of homologous structures. Select the correct group :
(A) Wings of a bird and a butterfly
(B) Wings of a pigeon and a bat
(C) Wings of a butterfly and a bat
(D) Forelimbs of a cow, a duck and a lizard
Write short notes based upon the information known to you.
Embryology
Observe the picture and answer the following questions.
A) Which evidence of evolution is shown in the picture?
B) What can be proven with this proof?
C) Give one more example of evidence of evolution
Short answer question.
Give the significance of fossils.
Enlist the evidences of evolution.
What were the characteristics of life forms that had been fossilised?
Complete the following conceptual picture:
