ECOLOGY
ORGANISMS AND THE ENVIRONMENT
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
All cells have a cell wall.
|
|
|
All cells arise from pre-existing cells.
|
|
|
All cells are capable of photosynthesis.
|
|
|
All cells can develop into any other type of cell.
|
Detailed explanation-1: -In 1839 anatomist Theodor Schwann proposed that all animals are composed of cells. In 1855 biologist Rudolph Vichow added to Schleiden’s and Schwann’s observations and proposed that all living things are composed of cells. Which statement is also part of Virchow’s cell theory ? All cell have a cell wall.
Detailed explanation-2: -In 1838 Schleiden defined the cell as the basic unit of plant structure, and a year later Schwann defined the cell as the basic unit of animal structure. Schleiden and Schwann articulated their observations as a unified theory-the cell theory-in 1839.
Detailed explanation-3: -TEK 7.12F: Recognize that according to cell theory all organisms are composed of cells and cells carry on similar functions such as extracting energy from food to sustain life. A cell is the basic unit of function and structure in all living organisms.
Detailed explanation-4: -In 1838, Matthias Schleiden, a German botanist, concluded that all plant tissues are composed of cells and that an embryonic plant arose from a single cell. He declared that the cell is the basic building block of all plant matter.
Detailed explanation-5: -In his short article, Schleiden did state that the cell is the fundamental unit of plant structure; i.e., all plants are made of cells.