Biology Tissues Overview

<p>Kidney (B)</p> Signup and view all the answers

<p>Meristem (B)</p> Signup and view all the answers

<p>Sieve tubes (B)</p> Signup and view all the answers

<p>Chlorenchyma (B)</p> Signup and view all the answers

<p>Columnar epithelium (C)</p> Signup and view all the answers

<p>All of the above (D)</p> Signup and view all the answers

<p>All of the above (E)</p> Signup and view all the answers

<p>Sieve tubes (C)</p> Signup and view all the answers

<p>Directly participates in the process of photosynthesis (A)</p> Signup and view all the answers

<p>The apical meristem is found in the growing tips of stems and roots in plants.</p> Signup and view all the answers

<p>Sclerenchyma tissue.</p> Signup and view all the answers

<p>Sieve tubes, companion cells, phloem parenchyma, and phloem fibers (bast).</p> Signup and view all the answers

<p>Muscle/muscular tissue.</p> Signup and view all the answers

<p>A tissue is a group of cells that are similar in origin and structure, specialized to perform a particular function. Tissues function efficiently by grouping cells together. Examples include blood, phloem, and muscle.</p> Signup and view all the answers

<p>Cardiac muscles are responsible for pumping blood throughout the body by rhythmic contraction and relaxation. They work continuously without fatigue.</p> Signup and view all the answers

<p>The epidermis acts as a protective layer for all plant parts. It helps prevent water loss, controls gas exchange, and secretes a waxy, water-resistant layer for protection.</p> Signup and view all the answers

<p>In multicellular organisms, tissues enable the division of labor among different cell groups. Specific functions are performed by different types of tissues, allowing complex processes to occur efficiently. For example, the brain controls bodily functions, the heart pumps blood, kidneys filter waste, and sense organs gather information. This specialization is essential for the organism's survival and proper functioning.</p> Signup and view all the answers

<p>Tendon (A), Phloem (B), Adipose tissue (D)</p> Signup and view all the answers

<p>As root and stem grow older and increase in girth, peripheral tissue of root and stem become cork. Cork cells are dead and do not have any intercellular space. Cork is protective in function. It is used in manufacture of sports goods, linoleum &amp; for insulation.</p> Signup and view all the answers

Tissues are groups of similar cells that work together to perform a specific function in an organism. They are the building blocks of organs and play a crucial role in the overall functioning of living organisms.

Meristematic tissues are the tissues that are responsible for growth in plants. They are found in the tips of roots and stems, as well as in other locations, and are responsible for producing new cells.

Permanent tissues are derived from meristematic tissues and have stopped dividing. They are specialized to perform specific functions in the plant, such as support, photosynthesis, and storage.

Simple permanent tissues consist of a single type of cell and serve a specific function. They include parenchyma, collenchyma, and sclerenchyma.

Parenchyma tissue is composed of loosely packed cells with thin walls and large intercellular spaces. They are living cells and perform functions such as photosynthesis, storage, and secretion.

Collenchyma tissue is characterized by cells with thickened corners, providing support to growing plant parts. They are living cells and help prevent bending or breaking.

Sclerenchyma tissues are composed of dead cells with thickened cell walls containing lignin. They provide rigidity and support to plant structures.

Complex permanent tissues consist of different types of cells that work together to perform specialized functions. Xylem and phloem are examples of complex permanent tissues.

Xylem tissue is responsible for transporting water and minerals from the roots to the rest of the plant. It consists of vessels, tracheids, xylem parenchyma, and xylem fibers.

Phloem tissue transports organic nutrients, such as sugars, in both directions within the plant. It consists of sieve tubes, companion cells, phloem parenchyma, and phloem fibers.

Differentiation is the process by which meristematic tissues undergo changes to become specialized permanent tissues.

Apical meristems are meristematic tissues located at the tips of roots and shoots. They are responsible for the primary growth of the plant, contributing to increases in height and length.

Lateral meristems are meristematic tissues found along the lateral walls of the stem. Unlike apical meristems, they facilitate horizontal growth, increasing the girth or diameter of the stem.

Intercalary meristems are located between the nodes of the stem and the base of the leaf. These meristems play a key role in the process of branching, allowing the plant to grow laterally and produce new shoots or branches.

Epithelial tissues are one of the four primary types of animal tissues and serve as the protective covering of both the internal and external surfaces of the body. They also line various organs, cavities, and vessels.

Squamous epithelium is composed of thin, flat cells that resemble scales or flattened plates. They are tightly packed and form a smooth, continuous layer. They are well-suited for facilitating the exchange of gases and fluids.

Cuboidal epithelium cells are cube-shaped with a centrally located nucleus. They line the walls of small ducts and tubules in various glands and organs, including the kidney tubules and salivary glands.

Columnar epithelial cells are tall and elongated, with their nuclei typically located near the basal surface. They are found in the lining of the gastrointestinal tract and parts of the respiratory and reproductive systems.

Transitional epithelial cells have a variable appearance and can change shape from cuboidal to squamous under tension. This type of epithelium is found in regions of the body subjected to stretching and recoiling, such as the urinary bladder.

Nervous tissue is a specialized type of animal tissue that forms the nervous system, which includes the brain, spinal cord, and peripheral nerves. It is responsible for coordinating and regulating bodily functions.

Neurons, also known as nerve cells, are the functional units of the nervous system. They are specialized for transmitting electrical impulses, or action potentials, over long distances.

Neuroglial cells, or glial cells, are non-neuronal cells that provide structural support, insulation, and nourishment to neurons. They also play critical roles in maintaining the chemical environment of neurons.

Connective tissue is a type of animal tissue that provides support and binds other tissues together. There are different types of connective tissue, each with its own unique function. These types of tissue are found throughout the body, supporting organs, connecting tissues, and helping to maintain the body's structure.

Muscle tissue is responsible for movement in the body. There are three types of muscle tissue: skeletal, smooth, and cardiac. Each type of muscle tissue has different characteristics and functions.

Skeletal muscle is attached to bones and is responsible for voluntary movements, such as walking, running, and lifting. These muscles are striated, meaning they have a striped appearance under a microscope.

Smooth muscle is found in the walls of internal organs, such as the stomach, intestines, and blood vessels. It is responsible for involuntary movements, such as the movement of food through the digestive tract.

Cardiac muscle is found only in the heart and is responsible for pumping blood throughout the body. It is also involuntary and striated.