Question

answer these questions​

Answer 1

Answer:

1. Tissue, in physiology, a level of organization in multicellular organisms; it consists of a group of structurally and functionally similar cells and their intercellular material. ... xylem; Scots pine. A microscopic view of a Scots pine tree (Pinus sylvestris) showing cells of the xylem tissue.
2. Four types
4. Four types of elements together make up the xylem tissue. These elements are- (a) tracheids, (b) vessels, (c) xylem parenchyma and (d) xylem fibres.
6. The primary difference between simpleand complex tissue is, simple tissue is made up of only one type of cell whereascomplex tissue is formed of many types of cells. A simple tissue in animals is known as Epithelium whereas in plants it is known as Epidermis.
7. 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.
8. The stomach has 3 main functions: temporary storage for food, which passes from the esophagus to the stomach where it is held for 2 hours or longer. mixing and breakdown of food by contraction and relaxation of the muscle layers in the stomach. digestion of food.
9. Cardiac muscle tissue works to keep your heart pumping through involuntary movements. This is one feature that differentiates it from skeletal muscletissue, which you can control. It does this through specialized cells called pacemaker cells. These control the contractions of your heart.
10. The three types of muscle fibres are:- Striated muscles, smooth muscles and cardiac muscles.
11. Striated muscleUnstriated muscleCardiac muscleThey are cylindrical in shape and multi nucleate.They spindle shaped and uninucleate.They are cylindrical branched and uninucleate