Advertisements
Advertisements
प्रश्न
How do you express the meaning of words like race, breed, cultivars or variety?
Advertisements
उत्तर
- Race is a group of people who share similar and distinct physical characteristics.
- A group of animals related by descent and similar in most characters like general appearance, features, size, configuration, etc., are said to belong to a breed.
- A cultivar is a plant or grouping of plants selected for desirable characteristics that can be maintained by propagation.
- A taxonomic category that ranks below species, its members differing from others of the same species in minor but heritable characteristics is called variety.
APPEARS IN
संबंधित प्रश्न
The connecting link between ‘ape’ and ‘man’ is _______.
(A) Dryopithecus
(B) Australopithecus
(C) Homo erectus
(D) Homo neanderthalensis
Write the probable differences in eating habits of Homo habilis and Homo erectus.
Name the various tools of tracing evolutionary relationships which have been used for studying human evolution.
Given below are two stages in the evolution of man. Study them and answer the questions that follow:
Give two examples of Vestigial organs in humans.
Mention any two objectives of ‘Swachh Bharat Abhiyan.’
The range of cranial capacities in the following ancestral forms were
Cro-magnon ______.
What is the law of dominance of traits? Explain with an example.
Write two differences between Homo erectus and Homo habilis
Answer the following question.
Write the characteristics of Ramapithecus, Dryopithecus, and Neanderthal man.
Whose fossils were discovered at the site of Shivalik hills, India?
Complete the following paragraph with the words given in brackets.
(Cro-Magnon, brain, fire, agriculture, Cultural, homo-sapiens, wise man)
Evolution of upright man continued in the direction of developing its ________ for the period of about 1 lakh years and meanwhile it discovered the __________. Brain of a 50 thousand year old man had been sufficiently evolved to the extent that it could be considered as a member of the class _______. Neanderthal man can be considered as the first example of _______. The _______ man evolved about 50 thousand years ago and afterwards, this evolution had been faster than the earlier. About 10 thousand years ago, wise-man started to practice the _______. It started to rear the cattle-herds and established the cities. _______ development took place.
What was the brain capacity of Homo habilis?
Long tail, elongated tarsals, and binocular vision are seen in ______
A very small population of a species faces a greater threat of extinction than a larger population. Provide a suitable genetic explanation.
Among the human ancestors, the brain size was more than 1000 cc in ______.
Name the following :
Name of advanced pre-historic man
Write any eight major changes that occurred in human evolution.
Arrange and rewrite the terms in group in correct order to be in a logical sequence, beginning with the term that is underlined:
Australopithecus, Cro-Magnon, Homo erectus, Neanderthal man.
