Question

Differentiate between xylem and phloem.
[5 Marks]

Answer 1

Basic difference-
Xylem Phloem

Xylem tissues are tubular shaped structure, with the absence of cross walls. This tissue resembles the shape of a star. (0.5 marks)	Phloem tissues are elongated, tubular shaped structures that include thin sieve tubes with walls. (0.5 marks)
Xylem occupies the center of the vascular bundle. (0.25 marks)	Phloem is located on the outer side of the vascular bundle. (0.25 marks)
Xylem fibres are smaller. (0.25 marks)	Phloem fibres are larger. (0.25 marks)
They are present in leaves, stems, and roots. (0.5 marks)	They are present in leaves, roots, stems but transports and grow in fruits seeds and roots. (0.5 marks)
These tissues move in a Unidirectional. (only in one direction – upward direction) (0.5 marks)	These tissues move in a Bidirectional. (both the ways – up and down) (0.5 marks)
Xylem is composed of mostly dead cells except xylem parenchyma. (0.5 marks)	Phloem is composed of mostly living cells except phloem fibres. (0.5 marks)