BOTANY

Detailed explanation-1: -Dermal tissue, ground tissue and vascular tissue are the three tissues that make up a stem. The dermal tissue, which covers the stem’s outer surface, often serves as a barrier, protector and regulator of gas exchange. Aquatic plant stems’ dermal tissues are not as waterproof as aerial stems.

Detailed explanation-2: -The stem is composed of three tissue systems that include the epidermis, vascular, and ground tissues, all of which are made from the simple cell types.. The xylem and phloem carry water and nutrients up and down the length of the stem and are arranged in distinct strands called vascular bundles.

Detailed explanation-3: -When you think of the stem of plant you are probably picturing the internode. The internode is the thicker part of the stem that is seen extending up from the ground. The nodes are located at various points on the internode where the leaves begin to grow. The petiole is the stem of the leaf that attaches to the node.

Detailed explanation-4: -The main structures or ‘organs’ found in plants are the leaves, stems and roots. They are made up from groups of specialised tissues that have structures suited to the jobs they perform. The table below summarises the main features of these structures and their functions.

Detailed explanation-5: -The primary function (most important job) of a stem is mechanical support. Mechanical support means the plant’s stem supports the plant and holds it upright to help it grow toward sunlight. Stems also connect the other organs of the plant. Both the leaves and roots are connected to the stem!