Matric Part 1/9th Class Biology Chapter 9 MCQ Test With Answer for Chapter 9 (Transport) short questions, long questions, and much more pdf downlaod.
Transport KPK Biology Notes Unit 9
Q1. What is transport?
Ans: Transport:
Definition:
The movement of substances into and out of the body or cells of an organism is called transport.
i. Transport in unicellular and simple multicellular organism:
There is no special transport system or organs in unicellular organisms and less complex multicellular organism. Because their size is very small and the whole body of the organism is in contact with surrounding. So, in these organism transports occur directly through diffusion and osmosis.
ii. Transport in multicellular organisms:
The cells of multicellular organisms are far apart from the environment. Therefore, there exists a proper system for the transport of materials.
Example:
Transport in animals take place by blood circulatory system.
Transport in higher plants take place by vascular systems. i.e. xylem and phloem
