write in detail in 5 marks questions :
A) write the components and function of plant tissue system
B) classify the tissues based on their ability to divide
answer :
5 mark questions :
Answers
Answer:
Vascular plants have two distinct organ systems: a shoot system, and a root system. The shoot system consists stems, leaves, and the reproductive parts of the plant (flowers and fruits). The shoot system generally grows above ground, where it absorbs the light needed for photosynthesis. The root system, which supports the plants and absorbs water and minerals, is usually underground. The organ systems of a typical plant are illustrated below.
The roots of seed plants have three major functions: anchoring the plant to the soil, absorbing water and minerals and transporting them upwards, and storing the products of photosynthesis. Some roots are modified to absorb moisture and exchange gases. Most roots are underground. Some plants, however, also have adventitious roots, which emerge above the ground from the shoot.
Root systems are mainly of two types (shown below):
Tap root systems have a main root that grows down vertically, and from which many smaller lateral roots arise. Tap roots penetrate deep into the soil and are advantageous for plants growing in dry soils. Tap roots are typical of dicots such as dandelions.
Fibrous root systems are located closer to the surface and have a dense network of roots. Fibrous root systems can help prevent soil erosion. Fibrous roots are typical of monocots such as grasses.
Explanation:
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Ground tissue carries out different functions based on the cell type and location in the plant, and includes parenchyma (photosynthesis in the leaves, and storage in the roots), collenchyma (shoot support in areas of active growth), and schlerenchyma (shoot support in areas where growth has ceased)is the site of photosynthesis, provides a supporting matrix for the vascular tissue, provides structural support for the stem, and helps to store water and sugars.
Based on the dividing capacity of the tissues, various plant tissues can be classified as growing or meristematic tissue and permanent tissue.
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