$CATEGORY: Science - Khan Academy/8.How do Organisms Reproduce?/8.How do Organisms Reproduce?--Do Organisms Craete Exact Copies of Themselves?

//Multiple Choice

What is variation in biological terms? {
    ~Differences in environment
    =Differences among individuals of a species
    ~Changes in an organism during its lifetime
    ~Similarities among organisms
}

Which of the following is NOT a cause of variation? {
    ~Genetic recombination
    ~Mutation
    ~Environmental factors
    =Cloning
}

Why is variation important for a species? {
    ~It ensures all individuals are identical.
    =It helps a species adapt to environmental changes.
    ~It limits the survival of a species.
    ~It creates identical offspring.
}

Which type of reproduction leads to more variation? {
    ~Asexual reproduction
    =Sexual reproduction
    ~Binary fission
    ~Budding
}

Mutations are __________. {
    ~Always harmful to the organism
    =Sudden changes in the DNA sequence
    ~Caused only by environmental factors
    ~Not inheritable
}

//True or False

Variation only occurs in sexually reproducing organisms. {F}

Environmental changes can affect genetic variation. {T}

Mutations are always harmful to organisms. {F}

Variation helps a species survive environmental changes. {T}

All variations are passed onto the next generation. {F}

//Fill in the blanks

Variations are caused due to __________ and environmental factors. {
    ~Growth
    ~Genetics
    =Mutation
}

__________ reproduction results in greater genetic variation. {
    ~Asexual
    =Sexual
    ~Vegetative
}

Variation plays a critical role in the __________ of a species. {
    ~Extinction
    =Survival
    ~Inheritance
}

__________ are the sudden changes in the genetic material of an organism. {
    ~Genes
    =Mutations
    ~Chromosomes
}

Genetic variation is essential for __________ in nature. {
    ~Uniformity
    =Evolution
    ~Destruction
}

//Numericals



//Match the following

Match the following items from Column A with their correct corresponding options from Column B\:
{
=Genetic variation -> Differences in DNA among individuals
=Mutation -> Sudden change in genetic material
=Sexual reproduction -> Leads to greater variation
=Asexual reproduction -> Produces genetically identical offspring
=Adaptation -> Result of beneficial variations
}


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