Biology
Grade-9
Easy
Question
When members of two populations have anatomical differences in reproductive organs it is termed as:
- Mechanical isolation
- Temporal isolation
- Geographical isolation
- Habitat isolation
Hint:
When members of two populations have anatomical differences in reproductive organs it is termed as mechanical isolation.
The correct answer is: Mechanical isolation
- Mechanical isolation can be defined as the structural imcompatibilty between reproductive organs of two organisms.
- It is a type of pre-zygotic barrier.
- It prevents organisms from mating.
Related Questions to study
Biology
The most accepted theory of organic evolution is:
The most accepted theory of organic evolution is:
BiologyGrade-9
Biology
Which of the following is post-zygotic isolating mechanism:
Which of the following is post-zygotic isolating mechanism:
BiologyGrade-9
Biology
Genetic drift produces a large change in _________ population.
Genetic drift produces a large change in _________ population.
BiologyGrade-9
Biology
Which of the following is the most common mode of genetic variation in sexually reproducing organisms?
Which of the following is the most common mode of genetic variation in sexually reproducing organisms?
BiologyGrade-9
Biology
Industrial melanism is an example of:
Industrial melanism is an example of:
BiologyGrade-9
Biology
_________ is the process through which better-adapted organisms grow and reproduce more offspring in a population.
_________ is the process through which better-adapted organisms grow and reproduce more offspring in a population.
BiologyGrade-9
Biology
The transfer of a part of a chromosome or a set of genes to a non-homologous chromosome occurs in _____________.
The transfer of a part of a chromosome or a set of genes to a non-homologous chromosome occurs in _____________.
BiologyGrade-9
Biology
Any random alteration in allele frequency occurring in the natural population by pure chance is called __________.
Any random alteration in allele frequency occurring in the natural population by pure chance is called __________.
BiologyGrade-9
Biology
Neo-Darwinism combines the theory of which two scientists?
Neo-Darwinism combines the theory of which two scientists?
BiologyGrade-9
Biology
Genetic variations arise due to:
Genetic variations arise due to:
BiologyGrade-9
Biology
Match the following:
Match the following:
BiologyGrade-10
Biology
What is a change in an organism that allows for it to survive in its environment?
What is a change in an organism that allows for it to survive in its environment?
BiologyGrade-10
Biology
Which of these is not a problem caused by selective breeding?
Which of these is not a problem caused by selective breeding?
BiologyGrade-10
Biology
What does every species demonstrate in the first phase of the explanation for Darwin's theory of natural selection?
What does every species demonstrate in the first phase of the explanation for Darwin's theory of natural selection?
BiologyGrade-10
Biology
Which of the following is not a principle that Darwin identified to affect natural selection?
Which of the following is not a principle that Darwin identified to affect natural selection?
BiologyGrade-10
