Question

Which three type of tissue systems have been recognised in plants on the basis of their functions ?

• A. Epidermal tissue system consists of epidermis and epidermal appendages, which provide protection to the internal tissues
• B. All tissues except epidermis and vascular bundles constitute the ground tissue, which forms the major part of a plant's body
• C. Vascular tissue system consists of complex tissues i.e. xylem and phloem
• D. All of these

Answer 1

The correct option is D All of these

The epidermal tissue system forms the outer-most covering of the whole plant body and comprises epidermal cells, stomata, and the epidermal appendages. The epidermis is the outermost layer of the primary plant body hence provides protection to the internal tissues. Ground tissue is of three types parenchyma, collenchyma, and sclerenchyma(each having roles in food creation and storage or support during and after growth). All tissues except epidermis and vascular bundles constitute the ground tissue. The complex tissues are made of more than one type of cells and these work together as a unit. Xylem and phloem constitute the complex tissues in plants ( for water and food transport respectively).

So, the correct option is 'All of these'.