NCERT Solutions for Class 8 Science Chapter 9: Reproduction in Animals
NCERT Solutions For Class 8 Science Chapter 9: In this article, we will provide you with detailed and comprehensive Class 8 Science NCERT Solutions for Chapter 9 – Reproduction in Animals. These solutions will help all Class 8 students to get familiar with the chapter, the questions asked from it, and how to answer them. The solutions provided in this article are solved by top teachers and experts at Embibe. You can get detailed and well-explained answers to all the exercise questions from Chapter 9 of the NCERT books for Class 8 Science.
Students can also download the solutions for Class 8 Science Chapter 9 PDF for free from this page. 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.
Chapter 9: Reproduction in Animals
We have provided here the NCERT solutions for class 8 science chapter 9 along with a direct link to the NCERT solutions for class 8 science chapter 9 extra questions PDF download free to help the students prepare well for the exam. Finding the right solutions usually turns into a gruelling task with a plethora of links available on the Internet. If you have also been struggling with the same issue then look no further. The NCERT solutions for class 8 science chapter 9, Reproduction In Animals PDF along with the NCERT solutions for class 8 science chapter 9 MCQ free download which can easily be downloaded from the Embibe platform who are looking for authentic textbooks to download.
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’. Look below to have an overview of the same. Click on any topic to download its solutions as a PDF.
CBSE NCERT Solutions For Class 8 Science Chapter 9 PDF
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. 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.
Reproduction is a biological process by which new organisms are produced from their parents. It is essential for the continuation of species.
Modes of Reproduction
There are two modes of reproduction:
What is Sexual Reproduction?
It is the type of reproduction where two parents are involved to give rise to offspring.
– Males and females have different reproductive parts or organs.
– These reproductive parts produce gametes that fuse to form a zygote.
– It is the zygote that develops into a new individual.
Female Reproductive Organs
The female reproductive organs include the following:
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
Male Reproductive Organs
The male reproductive organs include the following:
A pair of testes: It produces male gametes called sperms
Two sperm ducts
What is Fertilization?
The fusion of the egg and the sperm is called fertilization. It is the first step in the process of reproduction.
The fertilization which takes place inside the female body is called internal fertilization. It occurs in many animals including humans, cows, dogs, and hens.
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. It is very common in aquatic animals such as fish, starfish, etc.
Development of Embryo
The zygote divides repeatedly to give rise to a ball of cells. These cells then begin to form groups that develop into different tissues and organs of the body. This developing structure is called the embryo. This embryo continues to develop in the uterus.
What is the difference between Viviparous and Oviparous animals?
The animals which give birth to young ones are called viviparous animals.
The animals which lay eggs are called oviparous animals.
It is internal fertilization.
It can be internal or external fertilization.
For example: insects, amphibians, reptiles, birds, fishes, etc.
For example: mammals like cats, dogs, humans, lion, elephant, tigers, etc.
What is Asexual Reproduction?
The type of reproduction in which only a single parent is involved is called asexual reproduction.
Types of Asexual Reproduction:
– Budding: In very small animals like a hydra, new individuals develop from buds. This method of asexual reproduction is called budding. Bud: It is a bulge or a lateral outgrowth from a parent body. These bulges detach themselves from the parent body and develop into new individuals.
– Binary Fission: Amoeba is a single-celled microscopic organism. It reproduces by dividing itself into two daughter cells. Each cell develops into a new organism. This type of reproduction is called binary fission.
FAQs on NCERT Solutions for Class 8 Science Chapter 9
Here we have provided some of the frequently asked questions related to this chapter.
Q1: Choose the most appropriate answer. a) internal fertilisation occurs (i) in female body (ii) outside female body (iii) in male body (iv) outside male body b) A tadpole develops into an adult frog by the process of (i) fertilisation (ii) metamorphosis (iii) embedding (iv) budding c) The number of nuclei present in a zygote is (i) none (ii) one (iii) two (iv) four
A: a) (i) in female body b) (ii) metamorphosis c) (iii) two
Q2: Indicate whether the following statements are True (T) or False (F). (a) Oviparous animals give birth to young ones. ( ) (b) Each sperm is a single cell. ( ) (c) External fertilisation takes place in frog. ( ) (d) A new human individual develops from a cell called gamete. ( ) (e) Egg laid after fertilisation is made up of a single cell. ( ) (f) Amoeba reproduces by budding. ( ) (g) Fertilisation is necessary even in asexual reproduction. ( ) (h) Binary fission is a method of asexual reproduction. ( ) (i) A zygote is formed as a result of fertilisation. ( ) (j) An embryo is made up of a single cell. ( )
A: a) False b) True c) True d) False e) True f) False g) False h) True i) True j) False
Q3: In which female reproductive organ does the embryo get embedded?
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.
Q4: Complete the crossword puzzle using the hints given below. Across ↦ 1. The process of the fusion of the gametes. 6. The type of fertilisation in hen. 7. The term used for bulges observed on the sides of the body of hydra. 8. Eggs are produced here. Down ↧ 2. Sperms are produced in these male reproductive organs. 3. Another term for in vitro fertilisation. 4. These animals lay eggs. 5. A type of fission in amoeba
A: The differences between a zygote and a foetus are tabulated below:
Q6: Define asexual reproduction?
A: In this type of reproduction, the offspring arises from a single organism without the fusion of male and female gametes. It never changes the number of chromosomes.
Q7: What is metamorphosis?
A: It is defined as the process in which an animal’s body structure abruptly changes through cell growth and differentiation.
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. Mugging up of topics is not recommended. Instead, try to absorb and understand the concepts. This will not only help you retain the information but will also aid you in gaining immense knowledge.
Students can also refer to the NCERT solutions for class 8 science chapter 9 MCQ PDF download or NCERT solutions for class 8 science chapter 9 and NCERT solutions for class 8 science chapter 9 extra questions based on their requirements to prepare well for the exam in an efficient way.
Now you are provided with all the necessary information regarding Class 8 Science Solutions for the 9th chapter. Make proper use of these resources and finish the chapter in the most efficient manner. Also, take mock tests for this chapter available for free on Embibe. This will give you a better idea of how well you have understood the chapter.
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