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प्रश्न
Struggle between cow and cow to get grass is called ______.
पर्याय
Inter-specific struggle
Environmental struggle
Struggle against natural calamities
Intra-specific struggle
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उत्तर
Struggle between cow and cow to get grass is called Intra-specific struggle.
Explanation:
Intra-specific struggle occurs when the members of the same species fight for the same resources in an ecosystem. Inter-specific struggle occurs when the members of two separate species share the same resources in the same area.
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संबंधित प्रश्न
Explain the following:- Speciation
Which of the following may be used to obtain an F2 generation?
(a) allowing flowers on a parent plant to be self-pollinated
(b) allowing flowers on an F1 plant to be self-pollinated
(c) cross-pollinating an F1 plant with a parent plant
(d) cross-pollinating two parent plants
Give an example of characteristics being used to determine how close two species are in evolutionary terms.
With the help of an example, explain how variation leads to evolution.
New species may be formed if:
- DNA undergoes significant changes in germ cells
- chromosome number changes in the gamete
- there is no change in the genetic material
- mating does not take place
One of the following has not been produced from wild cabbage by the process of artificial selection. This one is :
(a) kohlrabi
(b) cabbage
(c) spinach
(d) kale
What is a species?
Cichlid fishes in Lake Victoria are representatives of ______ type of speciation.
Add a note on allopatric speciation.
Which set contains the five main racial groups of human beings?
