HORTICULTURE

HORTICULTURE SCIENCE

ULTRA STRUCTURE OF PLANT CELLS AND ORGANS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following are complex tissues?
A
Dermal
B
Vascular
C
Collenchyma
D
Photosynthesis
Explanation: 

Detailed explanation-1: -Phloem is composed of sieve elements, companion cells, phloem parenchyma and phloem fibers. Hence xylem and phloem are called complex tissues.

Detailed explanation-2: -Complex permanent tissues are made up of more than one type of cells. Examples are the vascular tissues-xylem and phloem. Xylem is made of xylem parenchyma (for food storage), trachieds/trachea(for water conduction), vessels(for better water conduction) and xylem fibres(sclerenchyma tissue) (for mechanical support).

Detailed explanation-3: -Vascular tissue is a complex conducting tissue, formed of more than one cell type, found in vascular plants. The primary components of vascular tissue are the xylem and phloem. These two tissues transport fluid and nutrients internally.

Detailed explanation-4: -Xylem and phloem are an example of complex permanent tissues. These tissues are named so because they are made up of more than one type of cells and all these different types of cells coordinate to perform the same function.

Detailed explanation-5: -Each organ (roots, stems, and leaves) include all three tissue types (ground, vascular, and dermal).

There is 1 question to complete.