Biology, asked by sharmila36, 11 months ago

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Answered by 388rithika
0

Answer:

1) group of structural similar cells sharing same origin that are specialized to form a tissue...

Answered by anshumnandecha
1

Answer:

1. A group of cells which perform the same function and which are structurally and functionally same are known as tissues.

2. Xylem tissue is made up of four different types of cells- tracheids, vessels, xylem parenchyma and xylem fibres.

3. 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, collenchymas and are the examples of simple plant tissue whereas xylem and phloem are complex tissue

4. Parenchyma has a thin cell wall of their cells, and are made up of cellulose. Whereas collenchyma cells have an uneven cell wall made up of pectin and hemicellulose. There is a hard and thick cell wall present of the sclerenchyma cells, which is made up of the lignin

5. The two main functions of stomata are to allow for the uptake of carbon dioxide and to limit the loss of water due to evaporation. In many plants, stomata remain open during the day and closed at night. Stomata are open during the day because this is when photosynthesis typically occurs.

7. Cardiac muscle tissue works to keep your heart pumping through involuntary movements. This is one feature that differentiates it from skeletal muscle tissue, which you can control. It does this through specialized cells called pacemaker cells. These control the contractions of your heart

8. Striated muscle

Unstriated muscle

Cardiac muscle

cylindrical and multi nucleate; present in hands and legs

spindle shaped and uni nucleate; present in the wall of food canal, stomach, mouth, iris etc.

cylindrical branched and uni nucleate; present in heart

10. Tissue that forms the inner lining of our mouth → squamous epithilium

   Tissue that connects muscle to bone in humans → tendons

   Tissue that transports food in plants → Phloem

   Tissue that stores fat in our body → Adipose tissue

   Connective tissue with a fluid matrix → Blood

   Tissue present in the brain → Nervous tissue

11. Skin: Stratified squamous epithelial tissue

Bark of tree: cork (secondary meristem)

Bone: Connective tissue

Lining of kidney tubule: Cuboidal epithilium

Vascular bundle: Complex permanent tissue (Xylem and Phloem)

12. The parenchyma tissue is present in leaves, fruits, and flowers of a plant.

13. Epidermis is present on the outer surface of the whole plant body. The cells of the epidermal tissue form a continuous layer without any intercellular space. It performs the following important functions:-

   Cells of epidermis are water resistant thus prevent excess loss of water.

   It is a protective tissue which protect the plant body

   It allows exchange of gases through the stomata

14. Cells of cork are dead and compactly arranged without intercellular spaces. They also have a chemical called suberin in their walls that makes them impervious to gases and water thus they provide strong mechanical strength to plants.

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