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

//Multiple Choice

Which organ in the female reproductive system produces eggs? {
    ~Uterus
    =Ovaries
    ~Fallopian tubes
    ~Vagina
}

What is the site of fertilization in the female reproductive system? {
    ~Uterus
    ~Ovary
    =Fallopian tube
    ~Cervix
}

Which hormone regulates the menstrual cycle in females? {
    ~Testosterone
    ~Insulin
    =Estrogen and Progesterone
    ~Thyroxine
}

How long is the average menstrual cycle in humans? {
    ~21 days
    =28 days
    ~35 days
    ~40 days
}

What is the primary function of the uterus? {
    ~To produce eggs
    =To support the development of the embryo and fetus
    ~To transport sperm
    ~To produce hormones
}

During which phase of the menstrual cycle does ovulation occur? {
    ~Menstrual phase
    ~Follicular phase
    =Ovulatory phase
    ~Luteal phase
}

What happens if the egg is not fertilized? {
    ~It is stored in the ovary
    ~It is absorbed by the body
    =The uterine lining is shed as menstruation
    ~It continues to travel to the uterus
}

What is the role of the placenta during pregnancy? {
    ~It produces eggs
    =It facilitates the exchange of nutrients and waste between mother and fetus
    ~It produces sperm
    ~It is responsible for ovulation
}

Which of the following is a male reproductive organ? {
    ~Ovary
    ~Uterus
    =Testes
    ~Fallopian tube
}

What is the function of the amniotic fluid? {
    ~To nourish the embryo
    =To protect the embryo from shocks and injuries
    ~To help in fertilization
    ~To produce hormones
}

//True or False

Fertilization in humans occurs in the uterus. {F}

The menstrual cycle is controlled by hormones like estrogen and progesterone. {T}

Male gametes are produced in the testes. {T}

A zygote is formed when a sperm cell and an egg cell fuse. {T}

The placenta is responsible for producing sperm in males. {F}

The ovary releases multiple eggs during each menstrual cycle. {F}

The amniotic fluid protects the developing embryo from shocks and injuries. {T}

The sperm determines the sex of the baby. {T}

Menstruation stops temporarily during pregnancy. {T}

Fertilization can occur in the vagina. {F}

//Fill in the blanks

The process of fusion of male and female gametes is called ________. {
    =Fertilization
    ~Ovulation
    ~Menstruation
    ~Implantation
}

The organ where the embryo develops in females is the ________. {
    ~Ovary
    ~Fallopian tube
    =Uterus
    ~Cervix
}

The male gamete is called ________. {
    ~Ovum
    =Sperm
    ~Zygote
    ~Embryo
}

The release of an egg from the ovary is known as ________. {
    ~Fertilization
    =Ovulation
    ~Menstruation
    ~Implantation
}

The menstrual cycle in human females is regulated by ________ hormones. {
    =Estrogen and Progesterone
    ~Insulin and Thyroxine
    ~Testosterone and Estrogen
    ~Progesterone and Adrenaline
}

The fusion of male and female gametes forms a single cell called ________. {
    ~Embryo
    =Zygote
    ~Fetus
    ~Placenta
}

The thick muscular organ in females where the fetus grows is called the ________. {
    ~Fallopian tube
    ~Ovary
    ~Cervix
    =Uterus
}

The process of shedding the uterine lining when fertilization does not occur is called ________. {
    ~Ovulation
    =Menstruation
    ~Implantation
    ~Fertilization
}

The testes in males are responsible for producing ________. {
    ~Eggs
    ~Hormones
    =Sperm and Testosterone
    ~Nutrients
}

The fertilized egg gets implanted in the ________. {
    ~Ovary
    ~Fallopian tube
    =Uterus
    ~Vagina
}

//Numericals

How many chromosomes are present in a human gamete? {
    =23
    ~46
    ~22
    ~44
}

What is the average duration (in days) of the menstrual cycle in humans? {
    ~21
    ~25
    =28
    ~35
}

How long does the process of fertilization take after ovulation? {
    =12-24 hours
    ~48 hours
    ~72 hours
    ~96 hours
}

How many days does the luteal phase of the menstrual cycle typically last? {
    ~7 days
    ~10 days
    =14 days
    ~21 days
}

How many sperm cells are typically released during ejaculation? {
    ~1-5 million
    ~10-50 million
    =200-300 million
    ~500-700 million
}

How many chromosomes are present in a human zygote? {
    ~23
    =46
    ~92
    ~44
}

How many days does it take for a fertilized egg to implant in the uterus? {
    ~1-2 days
    ~3-4 days
    =6-7 days
    ~10-12 days
}

What is the typical gestation period in humans (in days)? {
    ~180 days
    ~240 days
    =280 days
    ~300 days
}

How long can sperm survive inside the female reproductive tract? {
    ~1-2 hours
    ~6-12 hours
    =3-5 days
    ~7 days
}

How many follicles are typically released during ovulation in a single menstrual cycle? {
    =1
    ~5
    ~10
    ~20
}

//Match the following

Match the following items from Column A with their correct corresponding options from Column B\:
{
=Ovary -> Produces eggs
=Uterus -> Implantation of embryo
=Fallopian tube -> Site of fertilization
=Sperm -> Male gamete
}


//******** END **********