$CATEGORY: Science - Khan Academy/8.How do Organisms Reproduce?/8.How do Organisms Reproduce?--Sexual Reproduction

//Multiple Choice

Fertilization in plants is the process of fusion of _______. {
    ~Pollen and stigma
    ~Pollen and ovule
    =Male and female gametes
    ~Ovary and ovule
}

The fertilized egg cell in plants is called the _______. {
    =Zygote
    ~Embryo
    ~Ovule
    ~None of the above
}

After fertilization, the zygote develops into a _______. {
    ~Seed
    ~Fruit
    =Embryo
    ~Germ
}

The process by which a seed begins to grow into a new plant is called _______. {
    ~Pollination
    =Germination
    ~Fertilization
    ~Reproduction
}

In plants, the embryo develops inside the _______. {
    =Seed
    ~Pollen
    ~Ovary
    ~None of the above
}

The union of male and female gametes in plants leads to the formation of a _______. {
    =Zygote
    ~Seed
    ~Fruit
    ~Carpel
}

Which part of the seed stores food for the developing embryo? {
    ~Seed coat
    =Cotyledon
    ~Embryo
    ~Ovule
}

The first cell formed after fertilization in plants is called the _______. {
    ~Embryo
    =Zygote
    ~Seed
    ~Ovule
}

Which of the following is NOT required for seed germination? {
    ~Water
    ~Oxygen
    ~Light
    =Fertilizer
}

The process in which the seed coat breaks open and the embryo begins to grow is known as _______. {
    =Germination
    ~Pollination
    ~Fertilization
    ~Reproduction
}

//True or False

Fertilization in plants occurs when the male gamete fuses with the female gamete. {T}

The zygote in plants develops into a fruit after fertilization. {F}

The process of germination begins when the seed coat breaks open and the embryo starts to grow. {T}

In plants, fertilization results in the formation of a seed. {T}

The cotyledons of a seed provide food for the developing embryo during germination. {T}

A zygote in plants develops into a fruit, which contains the seeds. {F}

The embryo in a seed is nourished by the stored food in the cotyledons. {T}

Germination requires the presence of light, water, and oxygen, but not necessarily temperature. {F}

After fertilization, the ovule becomes the seed, and the ovary becomes the fruit. {T}

In plants, fertilization occurs when pollen is transferred from the anther to the stigma. {F}

//Fill in the blanks

The process of fusion of male and female gametes in plants is called _______. {
    ~Germination
    =Fertilization
    ~Pollination
    ~Reproduction
}

After fertilization, the _______ develops into a seed. {
    =Ovule
    ~Zygote
    ~Embryo
    ~Carpel
}

The fertilized egg cell in plants is known as the _______. {
    =Zygote
    ~Seed
    ~Embryo
    ~Ovule
}

The embryo in a seed is nourished by the _______. {
    ~Ovary
    =Cotyledon
    ~Stigma
    ~Anther
}

The process by which a seed begins to grow into a new plant is called _______. {
    ~Pollination
    ~Fertilization
    =Germination
    ~Reproduction
}

The _______ is the protective outer covering of a seed. {
    ~Embryo
    =Seed coat
    ~Cotyledon
    ~Ovule
}

The first cell formed after fertilization in plants is called the _______. {
    ~Embryo
    =Zygote
    ~Ovule
    ~Seed
}

The part of the plant where fertilization occurs is the _______. {
    ~Stigma
    =Ovary
    ~Anther
    ~Pollen
}

For a seed to germinate, it requires water, oxygen, and _______. {
    ~Light
    ~Fertilizer
    =Temperature
    ~Soil
}

During germination, the seed coat _______ to allow the embryo to grow. {
    ~Hardens
    =Breaks open
    ~Expands
    ~Withers
}

//Numericals

A flower produces 5000 pollen grains, and only 10% of them are used for fertilization. How many pollen grains are used for fertilization? {
    =500
    ~1000
    ~2000
    ~5000
}

A plant produces 8 flowers, and each flower produces 300 pollen grains. How many pollen grains are produced in total? {
    ~2000
    =2400
    ~2800
    ~3000
}

A seed contains 2 cotyledons, and each cotyledon stores 150 mg of food. What is the total food stored in the seed? {
    ~200 mg
    =300 mg
    ~350 mg
    ~400 mg
}

A plant produces 10 seeds, and each seed has 2000 pollen grains. How many pollen grains are produced in total? {
    ~10000
    ~15000
    =20000
    ~25000
}

A plant's seed takes 5 days to germinate. If it takes 2 days for the seed to sprout and 3 more days to develop roots, how many days does the seed take to complete germination? {
    ~4 days
    =5 days
    ~6 days
    ~7 days
}

In a population of 500 plants, 60% of the plants undergo fertilization. How many plants undergo fertilization? {
    ~250
    =300
    ~350
    ~400
}

A seed has a total of 400 mg of food stored in its cotyledons. If the embryo consumes 50 mg of food during germination, how much food remains in the seed? {
    ~200 mg
    ~250 mg
    =350 mg
    ~400 mg
}

A flower produces 1000 pollen grains, and 20% of them are used for fertilization. How many pollen grains are used for fertilization? {
    ~100
    ~150
    =200
    ~250
}

In a seed, the embryo consumes 30% of the stored food during germination. If the seed contains 500 mg of food, how much food is consumed by the embryo? {
    ~100 mg
    =150 mg
    ~200 mg
    ~250 mg
}

A plant produces 12 flowers, and each flower produces 500 pollen grains. If 10% of the pollen grains are used for fertilization, how many pollen grains are used for fertilization? {
    ~500
    ~600
    =1200
    ~1500
}

//Match the following

Match the following items from Column A with their correct corresponding options from Column B\:
{
=Fertilization -> Fusion of male and female gametes
=Zygote -> Embryo develops inside the seed
=Germination -> Seeds begin to grow into a new plant
=Cotyledon -> Store food for a developing embryo
}


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