Home | | Science 10th Std | Phloem Transport

Transportation in Plants - Phloem Transport | 10th Science : Chapter 14 : Transportation in Plants and Circulation in Animals

Chapter: 10th Science : Chapter 14 : Transportation in Plants and Circulation in Animals

Phloem Transport

The food synthesised by the leaves are transported by the phloem either to the area of requirement or stored.

Phloem Transport

The food synthesised by the leaves are transported by the phloem either to the area of requirement or stored. Phloem tissue is composed of sieve tubes which have sieve plates. Cytoplasmic strands pass through the pores in the sieve plates.

Phloem transports food (sucrose) from a source to a sink. The source is part of the plant that synthesize food, i.e., the leaf, and sink, is the part that needs or stores the food. But, the source and sink may be reversed depending on the season, or the plant’s need.

Since the source-sink relationship is variable, the direction of movement in the phloem can be upwards or downwards, i.e., bidirectional. In contrast, the movement is always unidirectional in xylem i.e., upwards.

 

Tags : Transportation in Plants , 10th Science : Chapter 14 : Transportation in Plants and Circulation in Animals
Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail
10th Science : Chapter 14 : Transportation in Plants and Circulation in Animals : Phloem Transport | Transportation in Plants


Privacy Policy, Terms and Conditions, DMCA Policy and Compliant

Copyright © 2018-2024 BrainKart.com; All Rights Reserved. Developed by Therithal info, Chennai.