Advertisements
Advertisements
प्रश्न
All organisms produce more young ones. Comment
उत्तर
Every living organism has a great potential for reproduction. All organisms produced more young ones than those which can survive up to maturity. In other words, any population tends to increase in geometrical proportion. The sole purpose of organisms is to survive and perpetuate the species.
APPEARS IN
संबंधित प्रश्न
Name and define the three types of natural selection.
Answer each question in ‘One’ sentence only:
Identify which one of the following is a test cross.
The theory of Natural Selection was proposed by
Given alongside are two figures (A and B) showing a phenomenon that was first observed in Manchester before and after the year 1850.
Answer the following:
- What name has been given to this phenomenon?
- Give the common name and the scientific name of the insect involved in this phenomenon.
- Briefly mention why the changes shown in the two figures appeared.
- The following phenomenon provides a classical explanation of a scientific theory given by a certain scientist.
- Name and explain the said theory.
- Give the name of the scientist who gave this theory.
Answer the following question.
Explain ‘fitness of a species’’ as mentioned by Darwin.
The more characteristics two species have in common ______
Which of the following sequences fits into the organic evolution theory proposed by Charles Darwin and Alfred Wallace?
Which one of the following statement is correct?
Distinguish between directional, stabilizing and disruptive selection.
Define the following term:
Speciation