CBSE NCERT Solutions for Class 8 Science Chapter 8: Cell Structure & Functions PDF
Chapter 8 of NCERT Solutions for Class 8 Science is significant as it lays the foundation for all biology in higher classes. Students will benefit immensely from having CBSE NCERT Solutions for Class 8 Science Chapter 8 – Cell Structure and Functions – prepared subject professionals while doing their school assignments and for their exam preparation. Embibe provides free chapter-wise NCERT Solutions for all the classes and subjects in both PDF as well as image formats. So, students can refer to them online or download them for offline reference.
These NCERT Solutions for Class 8 Science provide answers to all the questions in Chapter 8. The solutions discuss concepts like the definition and types of a cell, parts of the cell, nucleus and its types, plant cell and animal cell and the difference between them. Scroll down for CBSE NCERT solutions for Class 8 Science Chapter 8 along with the solved examples, Questions from Previous year question papers, CBSE sample papers, Worksheets, Extra questions, tips and tricks.
NCERT Solutions For Class 8 Science Chapter 8: Cell: Structure And Functions
We have provided here the NCERT solutions for class 8 science chapter 8 along with a direct link to the NCERT solutions for class 8 science chapter 8 extra questions PDF download free to help the students prepare well for the exam. Finding the right solutions usually turns into a grueling 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 8 Friction PDF along with the NCERT solutions for class 8 science chapter 8 PDF download can easily be downloaded from the embibe platform who are looking for authentic textbooks to download.
Prior to getting into the detailed Class 8 NCERT Solutions for Science Chapter 8, let us bring you an overview of the list of topics and subtopics in this chapter:
NCERT Solutions For Class 8 Science Chapter 8 PDF Download
Students can download the solutions for Class 8 Science Cell: Structure and Functions Chapter as a PDF from here. Having knowledge of the Cells and Nucleus is essential for you. As you solve the questions of CBSE Class 8 Science Chapter 8 NCERT book, you will get to know more about the different types of cells as well as its different parts.
In unicellular organisms like the amoeba, cells have no definite shape. It keeps on changing its shape. Some projections of varying length protrude out of its body. These are called pseudopodia or false feet.
However, in multicellular organisms, cells can have the following shapes
– Round or spherical: like red blood cells of humans
– Long and pointed at both ends, i.e. spindle-shaped: like muscle cells
– Long and branched: like nerve cell or neuron
What are the different functions of a cell?
Cells performing similar kinds of functions combine together to form tissues. And tissues further form an organ.
Each organ in the system performs different functions such as digestion, assimilation, and absorption.
Parts of the Cell:
The basic components of a cell are cell membrane, cytoplasm, and nucleus. All the parts of the cell are described as follows:
– Cytoplasm and nucleus are enclosed inside the cell membrane.
– It is also known as the plasma membrane.
– The membrane separates cells from one another.
– It gives shape to the cell.
– The plasma membrane is porous and allows the movement of substances both inward and outward.
– It is present at the center of the cell.
– It is dense and round in shape.
– Nucleus is separated from the cytoplasm by a membrane called the nuclear membrane.
– Nuclear membrane is porous and allows the movement of material between the cytoplasm and inside of the nucleus.
– Nucleus also contains thread-like structures called chromosomes. They carry genes and help in the inheritance or transfer of characters from the parents to the offspring.
– Nucleus also acts as a control center of activities of the cell.
Cytoplasm: It is a jelly-like substance present between the nucleus and the cell membrane.
Cell wall: It is the additional outer thick layer in the plant cell.
Difference between Prokaryotic and Eukaryotic Cell
The nucleus is not well organized.
They have a well-organized nucleus.
The nuclear membrane is absent.
A nuclear membrane is present.
Organisms with this kind of cells are called prokaryotes.
Organisms with this kind of cells are called eukaryotes.
For example, bacteria and blue-green algae
For example, human cell (all organisms other than bacteria and blue-green algae are eukaryotes)
– They are bubble-like structures found inside the cell.
– Plant cells have a large vacuole whereas animal cells have a very small vacuole.
– It stores food and a variety of nutrients that a cell might need to survive.
– They might also store waste products to protect the other cells from contamination.
– Coloured bodies called plastids are present only in the plant cells.
– Some plastids contain a green-colored pigment called chlorophyll.
– They are responsible for the green color of the plants.
Chloroplasts: Green colored plastids are known as chloroplasts.
FAQs Related To NCERT Solutions For Class 8 Science Chapter 8
Here we have provided some of the frequently asked questions:
Q1: Indicate whether the following statements are True (T) or False (F). (a) Unicellular organisms have one-celled body. (T/F) (b) Muscle cells are branched. (T/F) (c) The basic living unit of an organism is an organ. (T/F) (d) Amoeba has irregular shape. (T/F) A: a)True b) False c) False d) True
Q2: Which part of the cell contains organelles? A: Various cell organelles are present in the cytoplasm. It is a clear and colourless fluid that contains organelles like Mitochondria, Ribosomes, Golgi bodies.
Q3: State the difference between eukaryotes and prokaryotes. A: The differences between eukaryotes and prokaryotes are tabulated below:
Q4: Explain why chloroplasts are found only in plant cells. A: Chloroplasts are plastids required for the food making process, called photosynthesis, and thus they are only present in plant cells.
Q5: Define the nucleus of a cell. A: The nucleus is a double-membrane bound cell organelle present in eukaryotic cells. It contains the DNA, the genetic material. It is the command centre of the cell and is spherical in shape.
Students can also refer to the NCERT solutions for class 8 science chapter 8 PDF download or NCERT solutions for class 8 science chapter 9 and NCERT solutions for class 8 science chapter 8 extra questions based on their requirements to prepare well for the exam in an efficient way.
This article on Class 8 Science Solutions Chapter 8 – Cells: Structure and Functions will assist you in clearing your doubts that might come across your mind when preparing for the exam. It is advisable to stay away from rote learning. These solutions will help you in absorbing the chapter better. Also, solving them will aid you in understanding the paper pattern as well as help you manage your speed and time.
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