Which of the following is homologous to the scrotum? a. Convergent evolution demonstrates evolutionary relationships. With asexual reproduction, offspring are genetically equivalent to the parent.B. Whereas amoeba reproduces by binary fission. The vas deferens carries sperm from the testes to the penis. A. A new human individual develops from a cell called gamete. b. B. Cdk's must be bound … 4. Why do only male gametes have a tail? The zygote divides repeatedly to give rise to a ball of cells. A: It is defined as the process in which an animal’s body structure abruptly changes through cell growth and differentiation. 11. a. In placental mammals, delayed implantation usually occurs. 24. Only the offspring from asexual inherit from two parents B. What process is occurring at arrow C in the figure? ( ). After the follicle ruptures during _______, it becomes the _______. Which of the following statements about ectoprocts (bryozoans) is false? 4. Which of the following statements about hormone regulation of the female reproductive cycle is false? We hope this detailed article helps you. e. A sockeye salmon is considered a semelparous species. E.) LH and FSH are produced in the pituitary, and estradiol and progesterone are produced in the ovaries. (a) Oviparous animals give birth to young one. A. This will give you a better idea of how well you have understood the chapter. If you have any queries regarding Reproduction in Animals chapter solutions, drop your comments below and we will get back to you as soon as possible. 13. Organogenesis begins immediately after fertilization. If false, correct the statement: (a) External fertilisation can occur both in water and on land. b) Common household compounds like cleaners are not considered hazardous materials. Consider the following statements and select the option which correctly identifies true (T) and false (F) ones. A) Almost all are marine organisms. E. The _______ cells support and regulate spermatogenesis. Fungal spores are for asexual or sexual reproduction.c. Which of the following statements about human reproduction is false? Which of the following statements regarding mammalian female gametes is false? Select the statement that is TRUE about animal reproduction and development. A hormone released from location _______ stimulates the granulosa cells to convert androgens to estrogens using the action of the enzyme at location _______. It is very common in aquatic animals such as fish, starfish, etc. 2. According to the figure, _______ triggers an increase in _______. Which arrow in the figure best corresponds to the time of the most likely success of implantation? Some organisms can reproduce both sexually and asexually. 34.1: Digestive Systems. It occurs in many animals including humans, cows, dogs, and hens. C) Fungal spores are used in identification of fungi. A) Fungi produce sexual spores. Which of the following conclusions cannot be drawn from the information in the figure? c. Fossils … Which of the following is the best example of postnatal provisioning? )Fertilization occurs in the oviduct. (b) The eggs of fish are covered by hard shells for protection. answerCrossing over is a phenomenon that creates Which of the following species is semelparous? False- eggs of fish are covered by jelly-like substance for protection. 23. b. Homologous structures are the same body parts that are modified in different ways in different lines of descent from a common ancestor. The graphs in the figure represent the. Fertilization usually takes place in the. ( ) (b) Each sperm is a single cell. The male reproductive organs include the following: The female reproductive organs include the following: The fusion of the egg and the sperm is called fertilization. 17. b. Fragmentation is a method of asexual reproduction. 18. Embibe is India’s leading AI Based tech-company with a keen focus on improving learning outcomes, using personalised data analytics, for students across all level of ability and access. Soln: Because sperm need to be motile to reach the non-motile egg in the ovary of the female. Which of the following statements regarding semelparity is false? What process is occurring at arrow A in the figure? During the birthing process, the myometrial muscle is stimulated to produce, 50. This developing structure is called the embryo. The hormones produced at location B in the figure are stimulating the _______ to produce _______ at location C. 27. E) Fungal spores are for asexual or sexual reproduction. Reproduction (or procreation) is the biological process by which new “offspring” (individual organisms) are produced from their “parents. 37. 5. All plants reproduce by either sexual or asexual reproduction. C.)Oocytes complete meiosis after fertilization. Genetic diversity occurs in sexual reproduction. A: In the female reproductive organ, the embryo gets attached to the uterus.Once it gets attached, there occurs the formation of body parts like legs, hands, eyes etc.The embryo is then called a foetus. ( ) (b) Each sperm is a single cell. Sexual reproduction is more likely to increase genetic variation than is asexual reproduction C. Cell division only occurs after asexual reproduction Which of the following statements about sexual and asexual reproduction is FALSE? Which of the following is not a semelparous species? The domesticated the animals so that they could use … False- Human sperm has a head, middle piece and tail. Which of the following statements is FALSE? The hormone melatonin has strong effects on _______, and therefore also affects reproduction. Amoeba reproduces by budding. Which of the following is not contained in semen? C) A colony grows by sexual reproduction. The process that prevents polyspermy is, 41. (a) embryo (b) ovum … This embryo continues to develop in the uterus. 35. Written byZeshan Naz | 30-11-2020 | Leave a Comment. State whether the following statements are True or False. A) Cell division can reproduce an entire organism. (c) Human egg has a head, middle piece and tail. Which of the following statements regarding sexual and asexual reproduction is true? (i) Reproductive life of woman lasts from menarche to menopause. Some species of female crabs, queen honey bees, certain bats, sharks, turtles, snakes, and birds all share a common adaptation that permits flexible timing between copulation and fertilization. ( ) (d) A new human individual develops from a cell called gamete. With the help of these solutions, you will be able to understand the modes of animal reproduction, reproductive organs, sexual mode of reproduction, asexual mode of reproduction, fertilization and its types, binary fission, and budding modes of asexual reproduction. You can get detailed and well-explained answers to all the exercise questions from Chapter 9 of the NCERT books for Class 8 Science. B. (a) Oviparous animals give birth to young ones. 19. 48. 3. 9.1 represent? Question: Which Of The Following Statements Is FALSE? Which of the following statements about the domestication of animals during the agricultural revolution is FALSE? 3. This complete article on Class 8 NCERT Solutions for Science Chapter 9 – Reproduction in Animals will lend you a helping hand in clearing all sorts of doubts that you might come across while studying for the exam. The hormone that directly stimulates Leydig cells to secrete androgens is. The animals which lay eggs are called oviparous animals. 45. 12. 18. The enzyme responsible for converting androgens to estrogens is. Life is a characteristic that distinguishes physical entities that have biological processes, such as signaling and self-sustaining processes, from those that do not, either because such functions have ceased (they have died), or because they never had such functions and are classified as inanimate.Various forms of life exist, such as plants, animals, fungi, protists, archaea, and bacteria. Which of the following statements about hazardous materials is FALSE? C) Cell division ensures the continuity of life from generation to generation. 36. 34. In an adult, there is a strong correlation between the _______ and both testis size and the rate of sperm production. These solutions will help all Class 8 students to get familiar with the chapter, the questions asked from it, and how to answer them. – Males and females have different reproductive parts or organs. 16. A: The differences between a zygote and a foetus are tabulated below: A: In this type of reproduction, the offspring arises from a single organism without the fusion of male and female gametes. Make proper use of these resources and finish the chapter in the most efficient manner. An octopus is considered a semelparous species. During the birthing process, the release of _______ results in myometrial muscle contractions. D) Cell division is the basis of both sexual and asexual reproduction. 3. A. 25. Fungi produce sexual sporese. 8 practice test questionWhich of the following statements regarding the differences between mitosis and meiosis is false? The oxytocin that initiates birth is produced by the, 1. The fertilization which takes place inside the female body is called internal fertilization. 8. It is the first step in the process of reproduction. Oviparous animals give birth to young ones. These solutions are very helpful for all CBSE Class 8 students because they not only help in completing homework on time but also assist in the final exam preparation. Which one of the following physiological processes takes place because of a hormone-level drop? 6) Which of the following statements is FALSE? D) Eggs are fertilized internally. What is the difference between Viviparous and Oviparous animals? 28. 5. Click on any topic to download its solutions as a PDF. CBSE NCERT Solutions For Class 8 Science Chapter 9: Reproduction In Animals Solutions PDF Download, Chapter 1 – Crop Production and Management, Chapter 2 – Microorganisms: Friend and Foe, Chapter 3 – Synthetic Fibres and Plastics, Chapter 4 – Materials: Metals and Non-Metals, Chapter 7 – Conservation of Plants and Animals, Chapter 8 – Cell – Structure and Functions, Chapter 10 – Reaching the Age of Adolescence, Chapter 14 – Chemical Effects of Electric Current, Learn your lessons conceptually with interactive notes, NCERT Solutions For Class 10 Maths Free PDF Download (Updated For 2020-21), NCERT Solutions For Class 8 Free PDF: Download Class 8 Maths, Science NCERT Solution. This is called, 11. Instead, try to absorb and understand the concepts. E) They have lophophores. The oocyte and its layer of somatic cells are together called a. During mammalian pregnancy, implantation of the _______ usually takes place in the _______. ( ) (e) Egg laid after fertilization is made up of a single cell. a. Each sperm is a single cell. Figure \(\PageIndex{2}\): The ovarian and menstrual cycles of female reproduction are regulated by hormones produced by the hypothalamus, pituitary, and ovaries. 13. 7) Which of the following statements regarding cell division is false? Figure Which of the following statements about hormone regulation of the female reproductive cycle is false?. These cells then begin to form groups that develop into different tissues and organs of the body. 2. The type of reproduction in which only a single parent is 38. In a sexually indifferent embryo whose gonads develop into ovaries, which external structure will later develop into the labia majora? The process by which fertilization is decoupled from the full development of the embryo is called, 6. Indicate whether the following statements are true (T) or false (F). D) Fungal spores are highly resistant to heat and chemical agents. 19. 17. B) Fungi produce asexual spores. 14. 6. (a) Oviparous animals give birth to young ones. Which of the following is the correct order of events leading to the luteinizing hormone surge? Which of the following statements regarding this figure is true? 8. 4. Which of the following statements about the trophoblast is true? After fertilisation, the resulting cell which gives rise to a new individual is the. Which letter in the figure corresponds to the precursor tissue to the shaft of the penis? D.) Sexual reproduction is more likely to increase genetic variation than is asexual reproduction. 21. C) Fungal spores are used in identification of fungi. This will not only help you retain the information but will also aid you in gaining immense knowledge. (b) A new human individual develops from a cell called gametes. c) Animals that ingest low levels of hazardous materials may not appear clinically affected. B) They live in colonies. How is reproduction in hydra different from that in amoeba? During the birthing process, a _______ feedback loop maintains high levels of oxytocin, a hormone that stimulates smooth muscle, until _______ occurs. The Reproduction in Animals Class 8 solutions are provided here to help students get knowledge on the topic and to prepare for their examination effectively. B. A) Fungi produce sexual spores. a. The main structure maintaining the production of progesterone before initial implantation is the. 20. Which of the following hormones has a more pivotal, clearly defined function in females than in males? ( ) (c) External fertilization takes place in frog. Most species of animals are semelparous c. A mayfly is considered a semelparous species. Animals obtain their nutrition from the consumption of other organisms. True; 21. a. What are the two general methods of reproduction in organisms? External fertilisation takes place in frog. c. Parthenogenesis is a type of sexual reproduction that produces diverse offspring. In Sexual Reproduction, Both Meiosis And Fertilization Must Occur During The Life Cycle. a. Which of the following statements is false? 40. Which of the following statements regarding estrogen during the follicular phase is false? involved is called asexual reproduction. ( ) (d) A new human individual develops from a cell called gamete. Animal Reproduction. Students can also download the solutions for Class 8 Science Chapter 9 PDF for free from this page. Download CBSE Class 8 Solutions for Science for other chapters from the table below: Reproduction is a biological process by which new organisms Animal cell adhesion molecules evolved from protein families that originally performed other functions. Here we have provided some of the frequently asked questions related to this chapter. Sexual Reproduction Puts Together New Combinations Of Genes. In a female mammal, _______ cells are capable of producing androgens. Depending on their diet, animals can be classified into the following categories: plant eaters (herbivores), meat eaters (carnivores), and those that eat both plants and animals (omnivores). Which of the following statements is FALSE?a. A. D) Fungal spores are highly resistant to heat and chemical agents. ( ) (c) External fertilisation takes place in frog. For example: mammals like cats, dogs, humans, lion, elephant, tigers, etc. To breach the zona pellucida, the sperm releases enzymes via exocytosis from the acrosome in a process called, 42. ” It is a fundamental feature of all known life that each individual organism exists as the result of reproduction. For example: insects, amphibians, reptiles, birds, fishes, etc. False- External fertilisation can occur only in water. 20. d. Binary fission is a method of asexual reproduction 33. 26. Asexual reproduction requires meiosis.D. Estradiol and progesterone secreted from the corpus luteum cause the endometrium to thicken. – These reproductive parts produce gametes that fuse to form a zygote. B. C. In Sexual Reproduction, Offspring Receive Two Genes For Every Trait. In a primate or a horse, the hormone that prevents the corpus luteum from degenerating is. Categories: CBSE (VI - XII), Foundation, foundation1, NCERT Solutions. Now you are provided with all the necessary information regarding Class 8 Science Solutions for 9th chapter. Which of the following hormones can be measured to detect early pregnancy in a primate? The domesticated the animals so t … hat they could use them as draft animals to help them on the farm. 7) Which of the following pairs is mismatched? Answer. Which of the following statements about binary fission is false? 15. Indicate whether the following statements are True (T) or False (F). Which of the following statements is FALSE? Which of the following statements regarding semelparity is false? 46. A pair of testes: It produces male gametes Which of the following statements regarding the placenta is false? Regarding animal studies, which of the following statements is FALSE? 43. Egg laid after fertilisation is made up of a single cell. The type of fertilization in which the fusion of male and female gamete takes place outside the body of the female is called external fertilization. 16. An animal that begins as female and later changes its sex to become a male is most accurately referred to as, 7. 10. The animals which give birth to young ones are called viviparous animals. 10. Mugging up of topics is not recommended. d. Semelparity is common among insects. b. Karyokinesis is unnecessary in prokaryotes because there is no nucleus. 44. Biology ch. Q2: Indicate whether the following statements are True (T) or False (F). Which of the following statements about protein signals involved in the control of the cell cycle (shown) is false? – It is the zygote that develops into a new individual. called sperms, A pair of ovaries: They produces female gametes called ova (eggs), Oviducts (fallopian tubes): Single matured egg is released into the oviduct, Uterus: The development of the baby takes place in the uterus. A: a) (i) in female body.b) (ii) metamorphosisc) (iii) two, A: a) Falseb) Truec) Trued) Falsee) Truef) Falseg) Falseh) Truei) Truej) False. 39. 29. The release of LH and FSH is occurring at what letter in the figure? Look below to have an overview of the same. a. Budding is a method of asexual reproduction. a) Milk from dairy cows exposed to hazardous materials could present a potential danger to people. b. In temperate climates, temperature often _______ photoperiod timing in the coordination of reproductive events. 14. D. Sexual Reproduction Produces Clones. species. _______ is the process in which the female produces eggs that do not require sperm to develop into an adult. Which of the following does not occur during (or just prior to) parturition? This is followed by the division of its body into two. E) Fungal spores are for asexual or sexual reproduction. Which of the following hormones is directly responsible for milk secretion by the alveolar epithelial cells? Which of the following animals menstruates? Solution: Asexual reproduction requires meiosis.only sexual reproduction required meiosis, … Which of the following statements regarding embryonic diapause in the Antarctic fur seal is false? 4. State whether the following statements are True or False: (a) Each sperm is a single cell. 31. )Spermatogenesis and oogenesis require different temperatures. If false, correct the statement: (a) External fertilisation can occur both in water and on land. In both prokaryotic and eukaryotic cells, the outcome of cell reproduction is a pair of daughter cells, which are genetically identical to the parent cell. Which of the following statements about the male reproductive system is false? Which of the following best describes the physiological cause of the onset of menstruation in humans? The solutions provided in this article are solved by top teachers and experts at Embibe. What does Fig. 22. The figure below shows _______ during the life span of _______. 33. Asexual reproduction requires no partner.C. It can be internal or external fertilization. Which of the following statements about the mature (or Graafian) follicle is false? Prior to getting into the details of Class 8 Solutions for Science subject Chapter 9, it is important for you to have knowledge of the list of topics and sub-topics covered in the chapter – ‘Reproduction in Animals’. b. Asexually reproducing organisms can repair their own DNA.
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