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प्रश्न
The decaying process of C-14 occurs continuously in dead organisms only.
विकल्प
True
False
उत्तर
True
APPEARS IN
संबंधित प्रश्न
Mammals : _________ : : Amphibia : Fishes
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
State a reason for the increased population of dark coloured moths coinciding with the loss of lichens (on tree barks) during industrialization period in England.
An example of homologous organs is
Enlist any four sequential evolutionary names of human ancestors.
Explain with an example for the given, how the following provides evidence in favor of evolution in organisms :
Analogous organs
Name the scientists who Discovered the fossil of Australopithecus
Explain the evolution of giraffe's neck according to Lamarck's theory of evolution.
Name any two temporary embryonic structures in vertebrates which provide evidence for evolution.
How do homologous organs help in providing evidence for organic evolution?
Human tailbone is a vestigial organ. Explain.
Wing of an insect and forelimb of a bird are :
(a) analogous organs
(b) analeptic organs
(c) homologous
(d) homophobic organs
Write short notes based upon the information known to you.
Connecting link
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
Answer the following question.
Wisdom teeth : Vestigial organs :: Lungfish : ....................
Draw a labelled diagram of T.S. of a leaf showing Kranz anatomy.
Find an odd one out.
Appendix : vestigial organ : : Peripatus : ____________
Select vestigial organs from the following.
Select the correct statement.
- Define vestigial organs.
- Write names of any two vestigial organs in the human body.
- Write name of those animals in which these vestigial organs are functional.
Palaeontological evidence for evolution refers to the ______.
Basic principles of embryonic development were pronounced by:
The process of mating of individuals, which are more closing related than the average of the population to which they belong is called ______.
The study of fossil evidence of evolution is called ______
Animal husbandry and plant breeding programmes are the examples of ______.
Analogous organs arise due to ______.
How do we compute the age of a fossil?
How do we compute the age of a rock?
While creation and presence of variation is directionless, natural selection is directional as it is in the context of adaptation. Comment.
The evolutionary story of moths in England during industrialisation reveals, that 'evolution is apparently reversible'. Clarify this statement.
Give a scientific reason.
Morphological evidences suggest that dog, sheep and wolf have a common origin.
Write down the difference between homologous and analogous organs.
Find the odd one out:
Write avian characters of Archaeopteryx.
Industrial melanism was highlighted by ______.
Give examples of homologous organs and analogous organs in plants.
Write names of some vestigial organs in the human body.
