NCERT Solutions for Class 9 Science Chapter 5
NCERT Solutions for Class 9 Science Chapter 5 The fundamental unit of life Page 59, Page 61, Page 63, Page 65 and Exercises in English Medium updated for new academic session 2020-21 based on latest NCERT Books. Download UP Board Solutions class 9 Science chapter 5 in Hindi medium. Hindi Medium versions of Chapter 5 पेज 66 के उत्तर or पेज 68 के उत्तर or पेज 70 के उत्तर or पेज 73 के उत्तर and अभ्यास के प्रश्न उत्तर are also available in PDF form to free download. Download NCERT Solutions 2020-2021 and NCERT Solutions Apps for all subjects based on latest NCERT Books 2020-2021.We have updated our contents for CBSE, UP Board, Gujrat Board, MP Board and other boards who are following latest CBSE Syllabus 2020-21.
Class 9 Science Chapter 5 Question and Answers
|Class: 9||Science (English and Hindi Medium)|
|Contents:||English and Hindi Medium Solutions|
|Chapter 5:||The fundamental unit of life|
9th Science Chapter 5 Answers in English and Hindi Medium
NCERT Solutions for Class 9 Science Chapter 5 The fundamental unit of life Intext questions as well as end exercise question answers are given below for new academic session 2020-21. To solve your doubts, please join the Discussion Forum and ask the questions. Current users as well as our experts will reply you very soon. Download NCERT Solutions Offline Apps 2020-21 for offline use.
Class 9 Science Chapter 5 Answers in English Medium
9th Science Chapter 5 Answers in Hindi Medium
Class 9 Science Chapter 5 Answers in PDF Form
- Download 9th Science Page 59 Answers
- Download 9th Science Page 61 Answers
- Download 9th Science Page 63 Answers
- Download 9th Science Page 65 Answers
- 9th Science Chapter 5 Exercise Question Answers
- 9th Science Chapter 5 Study Material for 2020-21 in English
- 9th Science Chapter 5 Study Material for 2020-21 in Hindi
- Class 9 Science Solutions Main Page
Why are stem cell used in treatment of severe immunodeficiency disorder (SCID) in the children? Give three reasons.
(i) These are capable of dividing for long periods to generate replacement for the cell which that cannot produce adenosine deaminase.
(ii) Stem cells can trigger immune response.
(iii) Stem cells can differentiate into white blood cells against the infectious diseases.
Why is the cell called the structural and functional unit of life?
A cell is a smallest part of the living organisms which is fully alive and is capable of performing basic processes of life like, reproduction and respiration, therefore, it is called the structural and functional unit of life.
Name a single cell which may constitute a whole organism. What are they called?
Amoeba, They are called Unicellular organism.
Every multi-cellular organism has come from a single cell. Justify the statement.
Single cell forms a zygote which is first cell formed after fertilization. It further leads to the formation of large number of cells by cell division.
Which functions are performed by a single cell organism like amoeba?
A single cell takes in food, excrete waste, move, grow and reproduce.
Who discovered the cell and how?
Robert Hooke saw the cork which resembled the structure of a honey comb consisting of many little compartments. He observed these through a microscope. He called these boxes as cell.
Why is plasma membrane called a selective permeable membrane?
It is because it allows only certain material to pass through it and not all the materials.
Can you name the two organelles which contains their own genetic material?
Questions for Practice on 9th Science Chapter 5
How do substances like carbon dioxide and water moves in and out of the cell? Discuss.
It takes place through diffusion from higher concentration to lower concentration across a cell membrane.
Where are proteins synthesized inside the cell?
Packaging, storage and dispatching of the materials, synthesized inside the cell will not take place.
What will happen when a human red blood cells is placed in hypertonic salt/sugar solution?
It will shrink, i.e., plasmolysis will take place.
Important Questions on 9th Science Chapter 5
Smooth Endoplasmic Reticulum (SER) – synthesizes lipids constituting cell membrane.