Reproducerea LA Animale

The correct answer is testiculul. In mammals, the male gonad is called the testicle. It is responsible for the production of sperm and the secretion of testosterone, the primary male sex hormone. The testicles are located in the scrotum, outside the body, to maintain a lower temperature necessary for sperm production. They play a crucial role in the reproductive system of males.

Mamiferele care nasc pui insuficient dezvoltaţi şi a căror dezvoltare se continuă în marsupiu sunt numite marsupiale. Acestea includ animale precum koala, cangurul şi diavolul tasmanian. Marsupialele au un marsupiu, o pungă specială în care puii se dezvoltă ulterior naşterii. Acest mecanism de dezvoltare în marsupiu permite puiului să primească îngrijire şi nutriţie suplimentară până când devine suficient de dezvoltat pentru a se descurca singur.

The correct answer is "sperma." This is because the question is asking for the substance that is accumulated and conducted by the male genital ducts. Sperma is the reproductive fluid that contains spermatozoa and is released during ejaculation.

The testicles contain numerous seminiferous tubules where spermatozoa are produced.

Sperma trece succesiv prin canalul epididimului, canalul deferent şi canalul ejaculator care se deschide în uretra. The explanation is that the sperm goes through a series of channels, starting with the epididymis, then the vas deferens, and finally the ejaculatory duct, which opens into the urethra.

The given correct answer for this question is "ovule". The question mentions that the overele contain numerous ovarian follicles, which are responsible for producing ovules. Ovules are the female reproductive cells or eggs that are released from the ovaries during ovulation. Therefore, it can be inferred that the correct answer is ovule.

The correct answer is "ovulaţie, ovulatie." Ovulaţie este termenul medical utilizat pentru a descrie procesul prin care un ovul este eliberat din ovar în timpul ciclului menstrual al unei femei. Ovulatia este sinonimul acestui termen, fiind o forma alternativa de scriere a cuvantului.

The correct answer is "prostata". The question is asking for the glande anexe ale sistemului reproducător masculin (accessory glands of the male reproductive system) and the options given are "veziculele seminale" (seminal vesicles) and "prostata" (prostate). Both the seminal vesicles and the prostate are accessory glands that contribute to the production of semen. Therefore, the correct answer is "prostata".

The correct answer is "se produc în organe ale sistemului reproducător." This is because spermatozoa are produced in the reproductive organs of males, specifically in the testes.

The correct answer is "placenta." The placenta is an organ that develops during pregnancy and allows for the exchange of nutrients, oxygen, and waste products between the mother and the fetus. It is attached to the uterine wall and connects to the fetus through the umbilical cord. The placenta plays a crucial role in providing the necessary nutrients and oxygen for the growth and development of the fetus while also removing waste products from the fetal bloodstream.

This statement is true because in mammals, females have two X chromosomes, while males have one X and one Y chromosome. The presence of two X chromosomes in females allows for the inheritance of genes located on both chromosomes, while males only inherit genes from the single X chromosome they possess. This is the basis for the determination of sex in mammals.

The correct answer is "ovipare, monotreme." This is because mammals that lay eggs are called oviparous mammals, and monotremes are a specific group of mammals that fall under this category. Monotremes include animals like platypuses and echidnas, which are unique because they lay eggs instead of giving birth to live young. Therefore, both terms are correct in describing mammals that lay eggs.

The correct answer is 2n = 46 cromozomi. This means that the mother cell of a human ovum has a diploid number (2n) of 46 chromosomes. In humans, the diploid number refers to the total number of chromosomes in a somatic cell, which is double the haploid number (n) found in gametes. The diploid number is important for maintaining genetic stability and ensuring proper cell division during reproduction.

The correct answer is "ovar". The question asks about the female gonad, which refers to the reproductive organ responsible for producing eggs and female hormones. In females, this organ is called the ovary. Therefore, the correct answer is ovar.

The statement is false because the sex chromosomes in mammals are represented by one X chromosome and one Y chromosome in males, and two X chromosomes in females.

The correct answer is "amniotic." Around the embryo, the amniotic sac is formed, which contains fluid that serves the purpose of protection and nourishment.

The correct answer is oviduct, trompa uterină, trompele uterine. Oviduct, also known as the fallopian tube, is the structure in the female reproductive system where fertilization of the egg by sperm takes place. It is responsible for capturing the ovum released by the ovary and transporting it to the uterus. Trompa uterină and trompele uterine are alternative names for the oviduct in Romanian.

Spermatozoa are not diploid cells, they are haploid cells. Diploid cells have two sets of chromosomes, one from each parent, while haploid cells have only one set of chromosomes. Spermatozoa are produced through a process called meiosis, which reduces the number of chromosomes in the cell by half, resulting in haploid cells. Therefore, the statement that spermatozoa are diploid cells is false.

Nidația este procesul prin care embrionul se fixează în mucoasa uterină pentru a începe dezvoltarea. Aceasta este etapa în care embrionul se atașează de peretele uterin și începe să primească nutrienți și oxigen de la mamă prin intermediul placentei. Fecundația se referă la unirea ovulului și spermatozoidului, ovulația este eliberarea ovulului matur din ovar, iar gestația se referă la perioada de dezvoltare a embrionului în uter până la naștere. Prin urmare, nidația este răspunsul corect.

The correct answer is "partenogeneză,partenogeneza". This refers to the development of an individual from an unfertilized egg, a process known as parthenogenesis.

The correct answer is uter. In mammals, the embryo develops in the uterus, which is a specialized organ designed to support the growth and development of the fetus. The uterus provides a protected environment for the embryo to receive nutrients and oxygen from the mother's bloodstream through the placenta. It also allows for the removal of waste products from the embryo.

Ovulele sunt celule haploide.

Fecundation in humans occurs in the uterine tube, also known as the fallopian tube. This is where the sperm and egg meet and fertilization takes place. The uterine tube connects the ovaries to the uterus and provides a suitable environment for the fertilized egg to develop into an embryo before it implants in the uterus.

During meiosis, some cells divide in the ovaries. Meiosis is a type of cell division that occurs in the reproductive organs to produce gametes (eggs or sperm) with half the number of chromosomes as the parent cell. Since the ovaries are the female reproductive organs responsible for producing eggs, it is logical to conclude that meiosis occurs in the ovaries. This process is essential for sexual reproduction and ensures genetic diversity in offspring.

The correct answer is "canal deferent, uretră, vagin, uter, oviduct". This is the correct sequence of organs that the spermatozoa pass through during fertilization. The spermatozoa first travel through the canal deferent, then the urethra, followed by the vagina, uterus, and finally the oviduct. This sequence allows the spermatozoa to reach the oviduct where fertilization can occur.