Biology Chapter 26

The correct answer is Testis; it is the primary male sex organ responsible for sperm and testosterone production. Prostate, seminal vesicle, and vas deferens are also male reproductive organs but do not primarily produce sperm and testosterone.

The correct answer is 'Sperm', which is produced by the testes and is the male gamete responsible for fertilizing the female gamete, the ovum. 'Ovum' and 'Egg' are the female reproductive cells, while 'Zygote' is the fertilized egg cell formed by the fusion of the sperm and ovum.

The correct term for the mixture described is semen, which is produced by the male reproductive system. Testosterone is a hormone primarily produced in the testicles. Ovaries are part of the female reproductive system and are responsible for producing eggs. The cervix is a part of the female reproductive system that connects the vagina to the uterus.

Ovulation is the process by which an egg is released from the ovary and is ready for fertilization. Menstruation refers to the shedding of the uterine lining, while fertilization is when the egg is successfully merged with sperm. Implantation is the process in which a fertilized egg attaches to the wall of the uterus.

The uterus is where a fertilized egg implants and grows into a baby. The ovaries produce eggs, the fallopian tubes transport eggs to the uterus, and the vagina is the birth canal.

The vagina is the correct answer as it is the muscular tube that connects the uterus to the outside of the body. The cervix is the lower part of the uterus, not a passageway. The fallopian tube is where fertilization occurs, not a passageway to the outside of the body. The ovary is where eggs are produced, not a passageway for childbirth.

The correct term for the cycle of egg production and menstruation in females is the menstrual cycle. It involves hormone regulation and prepares the body for potential pregnancy.

Menstruation is the process in which the uterine lining is shed if fertilization does not occur. Ovulation is the release of an egg from the ovary, menopause is the cessation of menstruation, and implantation is the attachment of a fertilized egg to the uterine lining.

Menopause is the natural biological process that marks the end of a woman's menstrual cycles. It typically occurs in women in their late 40s to early 50s. Puberty is the phase when a person becomes capable of sexual reproduction. Ovulation is the release of an egg from the ovary. Menstruation is the monthly shedding of the uterine lining.

The correct term for the period of time between fertilization and birth is pregnancy. Gestation refers to the development of the offspring within the mother's womb. Conception is the moment when the egg is fertilized by a sperm. Ovulation is the release of an egg from the ovary.

During early growth after fertilization, the correct term for a fertilized egg is known as an embryo. A zygote is the initial cell formed when two gamete cells are joined. A fetus is the developing offspring in the later stages of pregnancy. A blastocyst is a structure formed in the early development of mammals.

The amniotic sac is a thin, fluid-filled membrane that surrounds and protects the fetus in the womb. The placenta is an organ that allows nutrient and waste exchange between the mother and fetus, the umbilical cord connects the fetus to the placenta, and the chorion is another membrane that surrounds the amniotic sac.

The correct term for a developing embryo is fetus, which typically refers to the developing human organism after the eighth week of development. Zygote is the initial stage after fertilization, blastocyst is the stage before implantation, and morula is the stage before blastocyst.

The correct answer is 'infancy', which is the stage of human development that occurs from four weeks after birth to four years. Adolescence refers to the teenage years, middle age is the period between early adulthood and old age, and old age pertains to the later stage of life.

Childhood is the stage of human development that typically ranges from infancy to age 12, where individuals experience significant growth and development before transitioning to adolescence.

Adolescence is the stage of development between childhood and adulthood, marked by physical, emotional, and cognitive changes. It is typically characterized by increased independence and self-discovery.

Adulthood is the stage of human development that follows adolescence and continues until old age. It is characterized by increasing independence and responsibility.

A centenarian is a person who has reached the age of 100 years or older. Nonagenarian refers to a person in their 90s, octogenarian to a person in their 80s, and septuagenarian to a person in their 70s.