MEDIUM
9th CBSE
IMPORTANT
Earn 100

In a project work, the onion peel slide was prepared by Ajay, which he stained with
(i) iodine solution and then second slide he stained with 
(ii) methylene blue.
He observed that different regions got different colours.

Can he use both stains as a replacement of each other?

Important Questions on The Fundamental Unit of Life

MEDIUM
9th CBSE
IMPORTANT
Biology for Class IX>Chapter 2 - The Fundamental Unit of Life>Exercise>Q 2
In project work, the onion peel slide was prepared by Ajay, which he stained with
(i) iodine solution and then the second slide he stained with 
(ii) methylene blue.
He observed that different regions got different colours.
Why do different regions of the slide got coloured differently?
MEDIUM
9th CBSE
IMPORTANT
Biology for Class IX>Chapter 2 - The Fundamental Unit of Life>Exercise>Q 2

In a project work, the onion peel slide was prepared by Ajay, which he stained with

(i) iodine solution and then second slide he stained with 

(ii) methylene blue.

He observed that different regions got different colours.

What values are shown by Ajay?

MEDIUM
9th CBSE
IMPORTANT
Biology for Class IX>Chapter 2 - The Fundamental Unit of Life>Exercise>Q 1
What are the three major functional regions of the cell?
MEDIUM
9th CBSE
IMPORTANT
Biology for Class IX>Chapter 2 - The Fundamental Unit of Life>Exercise>Q 2
Plasma membrane is called a selectively permeable membrane. Why?
EASY
9th CBSE
IMPORTANT
Biology for Class IX>Chapter 2 - The Fundamental Unit of Life>Exercise>Q 3
Who proposed the fluid mosaic model of the cell membrane? (Antonie van Leeuwenhoek /Singer and Nicolson)
MEDIUM
9th CBSE
IMPORTANT
Biology for Class IX>Chapter 2 - The Fundamental Unit of Life>Exercise>Q 4
State the common physical processes involved in the transport of substances across the plasma membrane.
EASY
9th CBSE
IMPORTANT
Biology for Class IX>Chapter 2 - The Fundamental Unit of Life>Exercise>Q 5
Define diffusion.
EASY
9th CBSE
IMPORTANT
Biology for Class IX>Chapter 2 - The Fundamental Unit of Life>Exercise>Q 6
What is the membrane surrounding the cell sap called?(Tonoplast/ Plasma membrane)