Page 1 - LN

SAI International School
Std -X, Subject- BIOLOGY
Chapter- Life Processes
Subtopic- Transportation in Plants
Module- 10
Lesson Notes

 Soil is the natural and richest source of raw material for plants.

 Raw materials like nitrogen, phosphorous and other minerals are absorbed by
plants from soil by roots.

 Plants absorb water and minerals from soil by roots and transport to the leaves.

 As the distance between roots and leaves is large, diffusion is not sufficient to
provide raw materials to leaves and energy to roots.

 Plants use slow transport system but large as required in tall plants to transport
food from leaves and raw materials from roots.

 A group of special cells forming vascular tissue transport water and nutrients to all
the cells of the plants.

 Two types of vascular tissues are xylem and phloem.

 Xylem transports water and minerals obtained from the soil.

 Phloem transports products of photosynthesis from the leaves to other parts of the
plant.

XYLEM