Advertisements
Advertisements
प्रश्न
Attempt giving a clear definition of the term species.
उत्तर
A species (both single and plural) is a natural population of individuals or groups of individuals who are similar in all key morphological and reproductive characteristics, allowing them to interbreed freely and produce fertile offspring.
APPEARS IN
संबंधित प्रश्न
(a) Select the homologous structures from the combinations given below:
(i) Forelimbs of whales and bats
(ii) Tuber of potato and sweet potato
(iii) Eyes of octopus and mammals
(iv) Thorns of Bougainvillea and tendrils of Cucurbita
(b) State the kind of evolution they represent.
(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
“Two areas of study namely 'evolution' and 'classification' are interlinked'. Justify this statement.
Give the importance of fossil in support of organic evolution
Out of bacteria, spider, fish and chimpanzee, which organism has a better body design in evolutionary terms? Give reason for your answer.
The wings of a housefly and the wings of a sparrow are an example of :
(a) analogous organs
(b) vestigial organs
(c) respiratory organs
(d) homologous organs
Complete the following chart:
The most common types of fossils are ------------------------.
Short answer question.
Give the significance of fossils.
The degenerated and non-functional organs found in an organism are called ______.
A human hand, a front leg of a cat, a front flipper of a whale and a bat’s wing look dissimilar and adapted for different functions. What is the name given to these organs?
The fossil remains of Archaeopteryx is a connecting link between ______
Homologous organs are:
The process of mating of individuals, which are more closing related than the average of the population to which they belong is called ______.
The presence of gill slits, in the embryos of all vertebrates, supports the theory of ______.
Which is not a vestigial organ in a man?
Flippers of Penguins and Dolphins are examples of:
Give an example for convergent evolution and identify the features towards which they are converging.
Complete the following diagram:
