A group of cells having similar shape and function act together to perform a specific function is known as a tissue. All the body parts are made up of tissues including the organs. Groups of tissues make organs. Different types of tissues are found in plants and animals.
What is a tissue class 9 answer?
What is tissue class 9 easy?
What is tissue with Example Class 9?
What is tissue Short answer?
How many types of elements together make up the xylem?
Xylem tissue is made up of four different types of cells- tracheids, vessels, xylem parenchyma and xylem fibres.
Why do we fall ill?
Infectious diseases are caused by pathogens such as bacteria, viruses, fungi and parasites entering the body through the air we breathe, the food and drink we consume or through openings in the skin, such as cuts. As an example, through cough and sneezing a person can spread the cold virus to another.
What is tissue class 9?
A group of cells having similar shape and function act together to perform a specific function is known as a tissue. All the body parts are made up of tissues including the organs. Groups of tissues make organs. Different types of tissues are found in plants and animals.
What is the function of phloem for Class 7?
Phloem is an elongated, tubular shape with thin-walled sieve tubes vascular tissue. Its function is the transportation of food and nutrients such as sugar from leaves to other parts of the plant.
Who is organ?
In biology, an organ (from the Latin “organum” meaning an instrument or tool) is a collection of tissues that structurally form a functional unit specialized to perform a particular function. Your heart, kidneys, and lungs are examples of organs.
What is an organ class 7?
An organ is defined as the group of tissues that perform a specific function in the body.
What is difference between simple tissue and complex tissue?
IF the tissues are composed of cells which are functionally and structurally similar, then they are called SIMPLE TISSUES. IF the tissues are composed of more than one type of cell, and they work together as a unit, performing many functions, then they are called COMPLEX TISSUES.
How are simple tissues different from complex in plants?
Simple tissues are made up of only one type of cells, which look like each other. On the other hand. complex tissues are made up of more than one type of cells. Parenchyma, collenchyma and sclerenchyma are examples of simple plant tissue, whereas xylem and phloem are examples of a complex tissue.
What is disease Class 9?
Any condition which impairs health, or interferes with the normal functioning of the body is called disease.
What is health class 9?
Health. Health is a state of complete physical, mental and social wellbeing. Disease. Any disturbance in the structure or function of any organ or part of body. It may be caused due to the attack of pathogens (virus, bacteria), lack of nutritious diet/balanced diet and lack of public health services.
How does cork act as a protective layer in plants?
The cork cells are dead and compactly packed with no intercellular space. Their cell walls are coated with a waxy substance, suberin, which do not allow water and gases to pass through. Therefore, it protects the plant against mechanical injury and also prevents the loss of water by evaporation.
How is food translocated in plant?
The vascular tissue, phloem helps in the transportation of the synthesized food from the leaves to various storage organs. Phloem is a complex permanent tissue that is present in all vascular plants. Phloem consists of various elements – phloem parenchyma, phloem fibers, companion cells, and sieve tubes.
What take in water and minerals from the soil?
Root absorbs water and minerals from the soil.
Is hair an organ?
Hair is an accessory organ of the skin made of columns of tightly packed dead keratinocytes found in most regions of the body.
Is skin an organ?
Skin is the largest organ of our body. The skin is made up of three main layers: the epidermis, dermis and subcutis.
How many types of elements together make up the xylem tissue?
Xylem tissue is made up of four different types of cells- tracheids, vessels, xylem parenchyma and xylem fibres.