Q: Which is a triploid tissue? How is the condition achieved in a fertilized ovule?
A: Anther produces pollen grains which lands on the stigma of the pistil with the help of biotic and…
Q: What is the ovum doing during the primary oocyte stage?
A:
Q: what structure contains enzymes needed by sperm to penetrate an oocyte?
A: Fertilization takes place when nuclei of both sperm and an oocyte fuse. Initially, a sperm must fuse…
Q: How many days does it normally take from the fertilisation of the egg up to birth of the baby?
A: The normal human gestation period is from thirty-seven weeks to forty-two weeks or 259 days to 293…
Q: Why is the cytoplasm of sperm cells very reduced? Why do mitochondria of sperm cells concentrate in…
A: sperm cell is formed inside the testis.
Q: Explain why sperm cannot fertilize an egg immediately after ejaculation?
A: The reproductive system(male and female) is a complex system with a number of interconnected…
Q: If a human female begins taking estradiol and progesterone immediately after the start of a new…
A: The hormones of the reproductive arrangement of vertebrates (sex hormones) are steroids that are…
Q: During which stage of cell division are spermatids formed from the secondary spermatocytes?
A: BASIC INFORMATION GAMETOGENESIS It is the process of formation of gametes. The diploid…
Q: What aids in the differentiation or the maturation of the oogonium into a mature ovum?
A: Oogenesis is the process of formation of ovum. It occurs in ovary of female.
Q: In a female human, the oogonium forms when the female is a _____________.
A: Singular word – oogonium, the plural word is oogonia. Oogonia is an immature female reproductive…
Q: Why are the males whose testes fail to descend to the scrotum considered infertile?
A: Testes are also known as testicles and they are a pair of sperms producing organs which helps in…
Q: What fertilized egg; enters 2 week period of rapid cell division?
A: Male and female gametes are called sperm and egg cells, respectively. For reproduction to occur, a…
Q: What is ovum?
A: The fusion of the sperm and the egg is what brings about the formation of the zygote, which will…
Q: Compare the structures of the egg and sperm. What structural modifications do sperm have that…
A: The process of producing new organisms from the pre-existing ones is called reproduction. It may be…
Q: When an ovum gets fertilised, menstural cycle stops temporarily in a woman?
A: Every month the inner lining of the uterus known as endometrial layer degenerates following the…
Q: Where does the formation of germ cells and sperm takes place?
A: Developmental biology is that the branch of biology that deals with the study the processes by that…
Q: Name a mature ovule containing the embryo.
A: The plant embryo is a part of the bud that consists of the earliest forms of leaves, stems, and…
Q: What are the different parts of a sperm? Explain their importance in fertilization.
A: Reproduction is an essential process in the sustenance of organisms. The male and female gametes…
Q: Contrast the number of sperm that are produced from oneprimary spermatocyte and the number of eggs…
A: Introduction The life starts from single cell called Zygote. A zygote is formed by the fusion of…
Q: Identify the structures of an egg and a sperm that aredirectly involved in fertilization.
A: Fertilization is that the method by that the male and also the female gametes (sperms and therefore…
Q: What is the period from the woman's ovulation to the start of menstruation called? a) The uterine…
A: There are two types of reproductive cycles in mammals. These are the Estrous cycle and the Menstrual…
Q: Rarely, two sperm may penetrate a secondary oocyte. Do youthink this fertilized cell will survive…
A: Fusion of only one sperm takes place with the egg.
Q: Name the process of fusion of ovum and sperm.
A: Reproduction is the process by which the organisms propagate their species by the union of the male…
Q: what is the purpose of calcium ion in fertilization?
A: * Fertilisation is an generative fertilisation fusion of gametes gives rise to a new individual…
Q: Which layer is responsible for encasing the growing embryo?
A: An embryo is an early stage of development that is present in a multicellular organism. Embryonic…
Q: Describe the function of the cilia in the lining of the uterine tube.
A: The fallopian tube is commonly known as the uterine tube and this is a very important part of the…
Q: What is this condition that results if the fertilized egg fails to descend down to the uterus?
A: Reproduction is the process by which an organism creates more of its own progeny. Reproduction is…
Q: If spermatogenesis is normal and all cells survive, how many sperm cells will be formed from 100…
A: Spermatogenesis is the process of sperm development. This cells play importance role in sexually…
Q: How do we develop from a single fertilized egg cell?
A: Introduction:- Fertilization is the process of haploid gametes fusing together to generate a diploid…
Q: What happens to the other Graafian follicles that have matured but not ovulated during the cycle?
A: Oogenesis is defined as the process by which the female sex cells or ova or egg cells are produced.…
Q: Despite the presence of So many sperms in the vicinity of an egg cell, only one sperm enters the…
A: Fertilization is a process in which male and female gametes fuse to form a zygote. This zygote…
Q: What happens if the mature ovum is not fertilized in a female? Name the process.
A: Reproductive system of an organism is also called a genital system. It is a biological system made…
Q: How many follicles mature every month during the reproductive phase of human female?
A: The reproductive phase is a period when an individual reproduces sexually. It begins at an early…
Q: How long does it take for the embryo to implant into the uterine wall ?
A: The sperm of male fertilized the ovum of the female results in formation of the zygote. Sperm is…
Q: What happens to the second sperm nucleus, the one that does not fertilize the egg cell? What is the…
A: Sexual reproduction is a fusion of male and female gametes to produce offspring from the zygote.…
Q: List two important functions of gonads.
A: The reproductive system of an organism is also known as the genital system. It is the biological…
Q: How does the embryo get nourishment inside the mother’s body?
A: Embryo means the developing offspring from the time of approximately 2nd to 8th weeks after the…
Q: What are the functions of the INTERSTITIAL CELLS and SERTOLI CELLS in sperm development?
A: In males the testis is the primary sex organ in which two major types of cells are present that are…
Q: Prior to fertilization, where is the male gamete located?
A: Flowers are also known as blossom. Their primary function is reproduction in plants. They also a…
Q: How many follicle cells will fit inside? Is there an abundance of yolk within the cytoplasm of the…
A: Oocyte It is an immature ovum or egg cell which is a female gametocyte or germ cell. It is involved…
Q: Why are the testes located outside of the body of organisms?
A: Testes is located outside the abdominal cavity. Testes is present inside scrotum.
Q: What happens in the process of fertilization in animals and humans?
A: The cells of the biological unit of life. the cells comprise tissues which collectively forms an…
Q: Why do the sperm “cork-screw” while swimming?
A: Sperm is motile reproductive cell formed in male testis. It reaches fallopian tube of female…
Q: What is the function of tail in the sperm.
A: Reproduction is the process that ensures the continuity of species on earth. It is the main feature…
Q: Name the substance present in the sperm acrosome & which help in sperms entry into egg.
A: Reproduction is the process that ensures the continuity of species on earth. It is the main feature…
Q: During which of the 3 stages of oogenesis does the oocyte nucleus move?
A: Oogenesis- Oogenesis is the process of formation of female gametes. This process begins inside the…
Q: Gastrulation occurs to form which three tissues? O hypoblast O ectoderm mesoderm O endoderm O B, C,…
A: During the early stages of embryo development, a multitude of signals are being released, some of…
Why should the sperm shrink into an elongated cell with a tail while the egg grows enormously?
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- Describe the events that must occur in order for sperm to penetrate an egg. What prevents more than one sperm from entering? In the case of twins, how many sperm entered the egg? Why must a man have millions of sperm in a semen sample to be considered fertile? If only one sperm were present in the semen and that sperm managed to find its way to the egg, could it fertilize the egg?Compare the structures of the egg and sperm. What structural modifications do sperm have that facilitate movement, energy use, and gaining access to the egg?Where (specifically) does fertilization take place in the body? When the zygote divides, is it using meiosis or mitosis?
- what structure contains enzymes needed by sperm to penetrate an oocyte?If an egg cell were treated with EDTA, a chemical that bindscalcium and magnesium ions,(A) the acrosomal reaction would be blocked.(B) the fusion of sperm and egg nuclei would be blocked.(C) the fast block to polyspermy would not occur.(D) the fertilization envelope would not form.Why is a second polar body expelled after fertilisation? a) To remove excess cytoplasm b) Because the oocyte must reactivate the incomplete meiosis before fusing with the sperm c) Before fusion with the sperm it must complete mitosis d) The fertilised oocyte is not a haploid cell until it expels the sperms mitochondria