science
Grade-10
Easy
Question
The traits that help an organism survive are called
- Evolution
- Natural selection
- Habitats
- Adaptations
Hint:
The character that helps to survive extreme conditions.
The correct answer is: Adaptations
Adaptation is a mechanism that helps an organism to withstand or survive changes occurring in an environment.
Adaptation forms the basis of natural selection and evolution described by Charles Darwin.
Biological adaptations help an organism to adjust itself to the extreme conditions of the surroundings.
Commonly described example is that the giraffes might have developed long neck by stretching for reaching higher branches as an adaptation to shortage of food.
Following idea of natural selection, the adapted traits are passed down to future generations enabling them to survive extremities.
- Adaptation is mechanism evolve to help organisms withstand extreme environmental conditions
- This forms the basis of natural selection and evolution
Related Questions to study
science
This law describes how each homologous pair separates independently of any other pairs during Anaphase I of meiosis.
- Law of independent assortment was described by Gregor Mendel
- Segregation of individual traits occur during meiosis
- Independent assortment was described following dihybrid cross
This law describes how each homologous pair separates independently of any other pairs during Anaphase I of meiosis.
scienceGrade-10
- Law of independent assortment was described by Gregor Mendel
- Segregation of individual traits occur during meiosis
- Independent assortment was described following dihybrid cross
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What type of graph do we use for discontinuous variation?
- Variation is the difference in genetic make up of individuals among same species
- Variation can be continuous or discontinuous
- Continuous variations do not have limited range. Height, weight are classical examples
- Discontinuous variations have limited range. Eye color, blood groups are classical examples
- Continuous and discontinuous variations are expressed in bell- shaped graph and bar graph, respectively
What type of graph do we use for discontinuous variation?
scienceGrade-10
- Variation is the difference in genetic make up of individuals among same species
- Variation can be continuous or discontinuous
- Continuous variations do not have limited range. Height, weight are classical examples
- Discontinuous variations have limited range. Eye color, blood groups are classical examples
- Continuous and discontinuous variations are expressed in bell- shaped graph and bar graph, respectively
science
Which of these is an example of inherited variation only?
- Eye color is due to the expression of 2 genes: ORC2 and HERC2
- Increased and decreased expression of the genes produce brown eyed and blue eyed offspring, respectively
Which of these is an example of inherited variation only?
scienceGrade-10
- Eye color is due to the expression of 2 genes: ORC2 and HERC2
- Increased and decreased expression of the genes produce brown eyed and blue eyed offspring, respectively
science
A length of DNA that codes for a specific characteristic
- Functional unit if hereditary is called gene
- Gene codes for specific proteins
- Genes are located at locus
- Alteration in the sequence of DNA is called mutation
A length of DNA that codes for a specific characteristic
scienceGrade-10
- Functional unit if hereditary is called gene
- Gene codes for specific proteins
- Genes are located at locus
- Alteration in the sequence of DNA is called mutation
science
Differences that exist naturally among members of a population or species are called ___?
- Genetic variation is the reason for difference among individuals within the same species
- Variations can be continuous or discontinuous
Differences that exist naturally among members of a population or species are called ___?
scienceGrade-10
- Genetic variation is the reason for difference among individuals within the same species
- Variations can be continuous or discontinuous
science
The ability to recognize a predator is an example of a ______adaptation?
The ability to recognize a predator is an example of a ______adaptation?
scienceGrade-10
science
Most adaptations that help an organism survive are passed on from parent to child as ___traits?
- Genetic information is stored in DNA present in the nucleus of the cells
- Genetic information can be passed from parent to offspring which is termed as inheritance
Most adaptations that help an organism survive are passed on from parent to child as ___traits?
scienceGrade-10
- Genetic information is stored in DNA present in the nucleus of the cells
- Genetic information can be passed from parent to offspring which is termed as inheritance
science
An organism that survives longer is more likely to produce_______offspring
- Individuals lacking fitness either does not attain mature age or fail to reproduce healthy offspring
An organism that survives longer is more likely to produce_______offspring
scienceGrade-10
- Individuals lacking fitness either does not attain mature age or fail to reproduce healthy offspring
science
Which one of the following shows continuous variation?
- Genetic variation is the reason for difference among individuals within the same species
- Variations can be continuous or discontinuous
- Continuous variation of a trait is not limited to a specific number as in height or weight of individuals in a group
Which one of the following shows continuous variation?
scienceGrade-10
- Genetic variation is the reason for difference among individuals within the same species
- Variations can be continuous or discontinuous
- Continuous variation of a trait is not limited to a specific number as in height or weight of individuals in a group
science
Which one of the following shows discontinuous variation?
- Genetic variation is the reason for difference among individuals within the same species
- Variations can be continuous or discontinuous
- Discontinuous variation of a trait is limited to specific number as in eye color or blood groups
Which one of the following shows discontinuous variation?
scienceGrade-10
- Genetic variation is the reason for difference among individuals within the same species
- Variations can be continuous or discontinuous
- Discontinuous variation of a trait is limited to specific number as in eye color or blood groups
science
The variety of genes and alleles that exist in organisms.
- Genetic diversity refers to difference in genetic make up among individuals of the same species
- Genetic diversity decides the fate of survival of the individual
- Different breeds of animals, birds are few examples of genetic diversity
- Independent assortment represents the separation of genes during meiosis
The variety of genes and alleles that exist in organisms.
scienceGrade-10
- Genetic diversity refers to difference in genetic make up among individuals of the same species
- Genetic diversity decides the fate of survival of the individual
- Different breeds of animals, birds are few examples of genetic diversity
- Independent assortment represents the separation of genes during meiosis
science
_____________ is the transfer of characters from parents to offspring.
_____________ is the transfer of characters from parents to offspring.
scienceGrade-10
science
Mitosis is also known as _________________.
Mitosis is also known as _________________.
scienceGrade-10
science
Genetic variation is not caused by:
Genetic variation is not caused by:
scienceGrade-10
science
Crossing over occurs in which phase?
Crossing over occurs in which phase?
scienceGrade-10
