Answer:
Cells are the smallest structural and functional unit of the Human body.
When a group of specialized cells perform a single job they form a TISSUE.
When a group of tissue carry out a particular function in the body they form the ORGANS.
Now when a group of organs perform the life process in the human body it constitute an ORGAN SYSTEM.
Explanation:
Cells are the basic units of life that pool together to form tissues. Tissues are groups of similar cells that perform a common function. Various types of tissues collaborate to form organs, each with a particular role in the organism.
The relationship between cells, tissues, and organs stems from the hierarchical organization of the body, in which increasing complexity levels lead to multicellular organisms.
Cells are the basic units of life, capable of performing all vital functions. They can divide to create new cells and group together performing similar functions to form tissues.
Tissues are groups of cells performing a common function. Organs, however, are complex structures consisting of different types of tissues operating in concert to fulfill a specific job in the organism, like the heart pumping blood or lungs ensuring oxygen supply.
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B. parietal cells
C. serous cells
D. mucous neck cells
Hydrochloric acid is secreted by B. parietal cells.
Parietal cells are involved in gastric acid secretion and help digest food, absorb minerals, and fight harmful bacteria.
Parietal cells (also known as oxygen cells) are gastric epithelial cells that secrete hydrochloric acid (HCl) and intrinsic factors. These cells are found in the gastric glands in the lining of the fundus and in areas of the body of the stomach.
There are several cell types in the stomach, each with a specific mechanism of action. Chief cells produce pepsinogen, which is converted to pepsin by hydrochloric acid in the stomach. Parietal cells produce hydrochloric acid, which enables this conversion.
Learn more about parietal cells here: brainly.com/question/12539717
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B) cold winters and cool summers.
C) located in the northern hemisphere.
D) a layer of frozen soil called permafrost.
Answer:
The correct answer would be A) many coniferous trees.
Taiga and tundra represent the two coldest biomes of the land on the planet.
The average annual temperature of taiga lies between 41° Fahrenheit and 23° Fahrenheit whereas the temperature of the tundra lies below 23° Fahrenheit throughout the year.
It makes the major difference between the plant life of the two biomes. The taiga is characterized by the presence of coniferous forests which consist of spruces, pines, and larches.
In contrast, vegetation in the tundra is mainly composed of grasses, shrubs, mosses, sedges, and lichens.