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प्रश्न
Name an animal having rudimentary eyes.
उत्तर
Flatworms (Planaria) have rudimentary eyes.
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संबंधित प्रश्न
Explain the following:- Speciation
Which of the following represent tall plants and which represent short plants (or dwarf plants)?
(a) Tt
(b) tt
(c) TT
Give reason for your choice (The symbols have their usual meaning).
Name two human traits which show variation.
The palisade cells of a species of plant contain 28 chromosomes. How many chromosomes will there be in each gamete produced by the plant?
(a) 56
(b) 28
(c) 14
(d) 4
In peas, a pure tall plant (TT) is crossed with a pure short plant (tt). The ratio of pure tall plants to pure short plants in F2 generation will be ______.
Name the famous book written by Charles Robert Darwin.
Fill in the following blank with suitable word:
Broccoli has evolved from .............. by the process of artificial selection.
Will geographical isolation be a major factor in the speciation of a self-pollinating plant species? Give reason for your answer.
Read the following statement and justify same in your own words with the help of suitable example.
Geographical and reproductive isolation of organisms gradually leads to speciation.
State and define three factors responsible for the rise of a new species.
