Tissues in Living Organisms

A tissue is a group of cells that are similar in structure and function.

Tissues allow for a division of labor, allowing for specialization in different cells and efficient carrying out of functions.

Onion 1 has longer roots. The roots continued growing after the tips of onion 2 were cut, indicating the presence of meristematic tissue near the tips.

<p>True</p> Signup and view all the answers

<p>The tips of the roots in jar 2 stopped growing because the apical meristem, responsible for growth in length, was removed.</p> Signup and view all the answers

<p>The cells formed by meristematic tissue differentiate, taking up a specific role, losing the ability to divide, and becoming permanent tissue.</p> Signup and view all the answers

<p>Different types of cells perform different specialized functions, allowing for greater complexity and efficiency in multicellular organisms.</p> Signup and view all the answers

<p>Parenchyma is the most common simple permanent tissue.</p> Signup and view all the answers

<p>Parenchyma tissue containing chlorophyll, known as chlorenchyma, is present in plants that perform photosynthesis. This allows these plant tissues to produce their own food.</p> Signup and view all the answers

<p>Aerenchyma is a type of parenchyma tissue present in aquatic plants. It contains large air cavities that help the plant float.</p> Signup and view all the answers

<p>Collenchyma tissue is a type of permanent tissue that provides flexibility to plants, allowing them to bend without breaking. It also provides mechanical support, particularly in leaf stalks and stems.</p> Signup and view all the answers

<p>Sclerenchyma tissue is responsible for the hard and stiff texture of the husk of a coconut.</p> Signup and view all the answers

<p>Sclerenchyma tissue is made of dead cells with thick walls that are strengthened by lignin.</p> Signup and view all the answers

<p>The outer layer of cells in a plant is called the epidermis.</p> Signup and view all the answers

<p>The epidermis protects the plant from damage, pathogens, and water loss.</p> Signup and view all the answers

<p>The waxy layer prevents water loss, mechanical damage, and invasion by parasitic fungi.</p> Signup and view all the answers

<p>The small pores in the epidermis are called stomata.</p> Signup and view all the answers

<p>Guard cells regulate the opening and closing of stomata, allowing for gas exchange and water transpiration when necessary.</p> Signup and view all the answers

<p>The presence of vascular tissue, specifically xylem and phloem, is a distinctive feature that enables complex plants to transport water, minerals, and food throughout their bodies.</p> Signup and view all the answers

<p>The four main types of cells that make up xylem are tracheids, vessels, xylem parenchyma, and xylem fibres.</p> Signup and view all the answers

<p>Phloem transports food from leaves to all other parts of the plant.</p> Signup and view all the answers

<p>Transpiration plays a role in cooling the plant and moving water and nutrients throughout the plant body.</p> Signup and view all the answers

<p>The thick waxy coating of cutin helps the plant retain water, preventing excessive water loss in the arid environment.</p> Signup and view all the answers

<p>The four main types of animal tissue are epithelial, connective, muscular, and nervous tissue.</p> Signup and view all the answers

<p>Nerve</p> Signup and view all the answers

<p>The three types of muscle tissue are striated, smooth, and cardiac.</p> Signup and view all the answers

<p>Nervous tissue is responsible for receiving and transmitting signals throughout the body.</p> Signup and view all the answers

<p>Neurons are the basic units of nervous tissue, responsible for receiving, processing, and transmitting signals throughout the body.</p> Signup and view all the answers

<p>Three types of simple tissues found in plants are parenchyma, collenchyma, and sclerenchyma.</p> Signup and view all the answers

<p>Stomata are pores on the surface of plants that regulate gas exchange and water transpiration.</p> Signup and view all the answers

<p>Striated muscle, also called skeletal muscle, is attached to bones and is responsible for voluntary movement. Smooth muscle is found in internal organs and is responsible for involuntary movement. Cardiac muscle is found in the heart and responsible for involuntary heart contractions.</p> Signup and view all the answers

<p>Cardiac muscle is responsible for the rhythmic contraction and relaxation of the heart, pumping blood throughout the body.</p> Signup and view all the answers

<p>Cork acts as a protective tissue, protecting the plant from injury, pathogens, and water loss.</p> Signup and view all the answers

<p>Epithelial tissue forms the inner lining of our mouth.</p> Signup and view all the answers

<p>Tendon tissue connects muscles to bones in humans.</p> Signup and view all the answers

<p>Phloem tissue transports food throughout the plant.</p> Signup and view all the answers

<p>Adipose tissue stores fat in the body.</p> Signup and view all the answers

<p>Blood is a type of connective tissue that has a fluid matrix called plasma.</p> Signup and view all the answers

<p>Nervous tissue is present in the brain.</p> Signup and view all the answers

<p>Connective</p> Signup and view all the answers

<p>Muscular tissue is responsible for movement in our body.</p> Signup and view all the answers

<p>Cardiac</p> Signup and view all the answers

<p>The constituents of phloem are sieve tubes, companion cells, phloem parenchyma, and phloem fibres.</p> Signup and view all the answers

<p>The epidermis is the outermost protective layer of plants that prevents water loss, injury, and pathogen infection.</p> Signup and view all the answers

<p>The cork layer is a protective tissue that replaces the epidermis as the plant ages, providing insulation and preventing water loss and pathogen infection.</p> Signup and view all the answers

<p>Parenchyma tissue is commonly found in the cortex, pith, and vascular bundles of plants.</p> Signup and view all the answers

<p>Phloem is responsible for transporting food (primarily sugars) from the leaves to other parts of the plant, providing the necessary energy for growth and development.</p> Signup and view all the answers

<p>A neuron consists of a cell body with a nucleus and cytoplasm, from which a long axon (single process) and short, branched dendrites (multiple processes) extend.</p> Signup and view all the answers

<p>Areolar tissue serves as a general connective tissue found between skin and muscles, around blood vessels and nerves, and in bone marrow. It provides support and elasticity, helps bind organs together, and facilitates repair of tissues.</p> Signup and view all the answers

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