1 .Write a note on plant tissues? (5 marks)
2. What is the function of connective tissues? Explain its types. (4 marks)
3. Draw a structure of a nerve cell (neuron). (3 marks)
4. What is the region where parenchyma tissue is present? (2 marks)
5. What is the point of difference between cardiac muscle and striated muscle? (2 marks)
6. Draw a neat diagram of a smooth muscle. (3marks)
7. Where is apical tissue present? (1 mark)
8. What are the various types of an animal tissue? (5 marks)
9. Write the difference between xylem and phloem. (3 marks)
10. Write the difference between a bone and cartilage. (2 marks)
Answers
Ans 1. Plant tissue is a collection of similar cells performing an organized function for the plant. Each plant tissue is specialized for a unique purpose, and can be combined with other tissues to create organs such as leaves, flowers, stems and roots.Aug 25, 2018
Ans 2. t is among one of the four basic cells of the animal body. In addition, it has a mesodermal origin that consists of various cells and interlacing protein fibers that are embedded in a chiefly carbohydrate ground substance.
In simple words, the connective tissue is a group of various cell that interlaced together and connect the various cell and structure of the body.
Types of connective Tissues:-
Areolar Connective Tissue - They are a loose array of random fibers that has a wide variety of cell type. In addition, they nourish and pillows epithelia. Furthermore, it provides protection against infection, gives passage to nerve and blood vessels through other tissues and fixes organs together.
Adipose Tissue -They are fat-filled tissues that have adipocytes and revealing the extracellular environment. Furthermore, they store energy, conserve body heat, fills space in the body pads and guards many organs, and shape up the body.
Dense Irregular Tissue -These tissues are densely spaced and the arrangement of fibers and fibroblast is random in them. Also, they are pretty strong and provides protection to organs from injury. In addition, it provides a protective capsule around many organs.
Dense Regular Tissue -They are parallel collagen fibers and fibroblast cells that are also densely spaced. Besides, they bind the bones together and attaches the muscle to the bone. Furthermore, they transfer force from the muscle to the bone.
Cartilages - They are also called gristle. Besides, they are the wide-spaced cell in the small cavities and they have a rubbery matrix. In addition, it facilities joints movements, grips airway open, resists compression at joints. Also, it shapes the outer ear, facilitates the movement of vocal cords, an indication of a fetal skeleton, and growth zone of children’s bones.
Bones -Bones are also a form of connective tissue that forms the structure of the body. Also, they are widely spaced cells and their matrix is concentric in onion-like layers. Moreover, they provide physical support and structure to the body.
Blood- It is also a connective tissue that carries erythrocytes, leukocytes, and platelets, and energy and oxygen in the body. Furthermore, they perform the function of transportation of minerals, nutrients, gases, hormones, and wastes in the body.
Ans 3. In the attachment
Ans 4. Parenchyma is present in soft parts of the plants such as mesophyll of leaves, fruits, flowers and young stem. It is also found in the ground tissue of petiole, mesophyll of leaves as well as in vascular bundles.
Ans 5. Cardiac muscles are known as heart muscle. These are short cells attached the head to tail. Mitochondria and glycogen are more abundant. Light and dark bands are present. Cells are branched and connected to next cells by intercalated disc. It is an involuntary muscle.
Striated muscle is otherwise called as striped or skeletal muscle as it is attached to the skeleton. These are long cells, present in bundles, enclosed in the sarcolemma. It has prominent regular strips of light and dark bands. The cells are unbranched cells without in interconnections. It is a voluntary muscle.
Ans 6. In the attachment
Ans 7. Meristems are classified by their location in the plant as apical (located at root and shoot tips), lateral (in the vascular and cork cambia), and intercalary (at internodes, or stem regions between the places at which leaves attach, and leaf bases, especially of certain monocotyledons—e.g., grasses).
Ans 8. In the attachment
Ans 9.Xylem
- This tissue helps to carry water and dissolved minerals to the various parts of the plant
- It is in the center of the stem and is surrounded by the phloem
- It supports only one-way movement tthat is upwards
- This tissue helps in transpiration
Phloem
- This tissue helps to carry prepared food from the leaf to the various parts of the plant
- It is present on the sides inside the stem and surrounds the xylem
- It allows two-way movement that is both upwards and downwards .
- This supports the process of translocation.
Ans 10. A bone is a hard connective tissue, while cartilage is soft connective tissue. Bones form the skeletal structure of the body, whereas cartilage is present in nose, ear, ribs, larynx, and joints and also act as a shock absorber in these joints.
HOPE IT WILL BE HELP FULL!
I have mentioned all the theoritical answers. You may find diagrams in the book or net.
Ans 1. Plant tissue is made up of a group of similar cells that work together to provide a specific purpose for the plant. Each plant tissue has a distinct function and may be united with other tissues to form organs like leaves, flowers, stalks, and roots.
Ans 2. t is one of the four fundamental cells found in the body of an animal. It also has a mesodermal origin, consisting of a mixture of cells and interlacing protein fibres embedded in a mostly carbohydrate-based ground component.
In simple terms, connective tissue is a collection of cells that interlace and link the body's numerous cells and structures.
The following are the several types of connective tissues:
Areolar Connective Tissue - Areolar connective tissue is a loose collection of random fibres with a wide range of cell types. Furthermore, they feed and cushion epithelia. It also protects against infection, allows nerve and blood arteries to flow through other tissues, and holds organs together.
Adipose Tissue - Adipocyte-rich fat-filled tissues that show the extracellular environment. They also store energy, preserve body heat, fill space in the body padding, protect several organs, and help to form the body.
Dense Irregular Tissue - Tissues that are densely spaced and have a random distribution of fibres and fibroblasts. They are also rather robust and provide organ protection from harm. It also protects various organs by forming a protective capsule around them.
Dense Regular Tissue consists of parallel collagen strands and densely spaced fibroblast cells. They also serve to connect the bones and the muscle to the bone. They also assist in the transmission of force from the muscle to the bone.
Cartilages are sometimes known as gristle. They also have a rubbery matrix and are the wide-spaced cell in the tiny cavities. It also facilitates joint mobility, keeps the airway open, and resists compression at the joints. It also helps to form the outer ear, enables vocal cord movement, is a sign of a foetal skeleton, and is a growing zone for children's bones.
Bones - Bones are a type of connective tissue that helps to construct the body's structure. They are also widely separated cells with a concentric matrix in onion-like layers. Furthermore, they supply the body with physical support and structure.
Blood is also a connective tissue in the body that transports erythrocytes, leukocytes, and platelets, as well as energy and oxygen. They also transport minerals, nutrients, gases, hormones, and wastes throughout the body.
Ans 3. In the attachment
Ans. 4: Parenchyma can be found in soft plant components such as the mesophyll of leaves, fruits, flowers, and young stems. It's also found in the petiole's ground tissue, leaves' mesophyll, and vascular bundles.
Ans 5. Cardiac muscles are also referred to as heart muscles. These are little cells that connect the head and tail. Glycogen and mitochondria are more plentiful. There are light and dark bands present. Intercalated discs branch and link cells to each other. It's an uncontrollable muscle.
Striated muscle is otherwise called as striped or skeletal muscle as it is attached to the skeleton. These are long cells, present in bundles, enclosed in the sarcolemma. It has prominent regular strips of light and dark bands. The cells are unbranched cells without in interconnections. It is a voluntary muscle.
Ans 7. Apical (at root and shoot tips), lateral (in the vascular and cork cambia), and intercalary (at internodes, or stem regions between the locations at which leaves connect, and leaf bases, notably of some monocotyledons—e.g., grasses) meristems are characterised by their position in the plant.
Xylem (answer 9)
This tissue aids in the transport of water and dissolved minerals throughout the plant.
It is located in the core of the stem, surrounded by phloem.
It only allows for one direction of movement, which is upwards.
This tissue aids in the process of transpiration.
Phloem
This tissue aids in the transport of prepared food from the leaf to the plant's numerous sections.
It can be seen on the interior of the stem on both sides and surrounds the xylem.
It enables for upward and downward movement in both directions.
This aids in the translocation process.
Ans 10. A bone is a type of hard connective tissue, whereas cartilage is a type of soft connective tissue. The skeletal framework of the body is made up of bones, whereas cartilage may be found in the nose, ear, ribs, larynx, and joints, where it also serves as a shock absorber.