Question

Ткани растений их строение и функции коротко и ясно!!!!!!​

Answer 1

Structure and Functions of Plant Tissues

Plant tissues are specialized groups of cells that work together to perform specific functions within a plant. There are several types of plant tissues, each with its own unique structure and function. Let's explore them briefly:

1. Meristematic Tissue: Meristematic tissue is responsible for the growth and development of plants. It consists of actively dividing cells and is found at the tips of roots and shoots. Meristematic tissue gives rise to other types of plant tissues through cell division.

2. Epidermal Tissue: Epidermal tissue covers the outer surface of plant organs, such as leaves, stems, and roots. It is composed of closely packed cells that form a protective layer. The epidermis may have specialized structures like stomata, which allow for gas exchange, and trichomes, which provide protection against herbivores and reduce water loss.

3. Ground Tissue: Ground tissue makes up the bulk of the plant body and performs various functions, including photosynthesis, storage, and support. It is composed of three types of cells:

- Parenchyma Cells: Parenchyma cells are thin-walled and have a large central vacuole. They are involved in photosynthesis, storage, and healing of wounds. - Collenchyma Cells: Collenchyma cells have thickened cell walls and provide mechanical support to young plant parts. - Sclerenchyma Cells: Sclerenchyma cells have thick, lignified cell walls and provide structural support to mature plant parts. They are often dead at maturity.

4. Vascular Tissue: Vascular tissue is responsible for the transport of water, nutrients, and sugars throughout the plant. It consists of two types of tissues:

- Xylem: Xylem tissue transports water and minerals from the roots to the rest of the plant. It is composed of tracheids and vessel elements, which are long, hollow cells. - Phloem: Phloem tissue transports sugars and other organic compounds from the leaves to other parts of the plant. It is composed of sieve tube elements and companion cells.

5. Reproductive Tissue: Reproductive tissues are involved in the production of gametes and the development of seeds and fruits. They include:

- Pollen: Pollen grains are produced in the male reproductive organs of plants and are involved in the transfer of male gametes. - Ovules: Ovules are produced in the female reproductive organs of plants and contain the female gametes.

These are the main types of plant tissues and their functions. Each tissue plays a crucial role in the growth, development, and survival of plants.