Answer:
From green plants to rabbits: 15,000
From rabbit to weasels: 1,500
From weasels to eagles: 150
Explanation:
Answer:
Cells in Xylem - tracheids and vessel members
Cells in Phloem - the sieve elements, the parenchyma cells, and the sclerenchyma cells
Explanation:
Vascular cylinder is a central column made up of vascular tissue of plant and is also surrounded by parenchymal ground tissue.
The vascular tissue is made up of xylem and phloem tissue. Xylem is made up of two cells tracheids and vessel members and Phloem is made up of three cells namely - the sieve elements, the parenchyma cells, and the sclerenchyma cells
Chromosomes condense during prophase
Answer:
Active transport mechanisms require the use of the cell’s energy, usually in the form of adenosine triphosphate (ATP).
Explanation:
If a substance must move into the cell against its concentration gradient, that is, if the concentration of the substance inside the cell must be greater than its concentration in the extracellular fluid, the cell must use energy to move the substance. Some active transport mechanisms move small-molecular weight material, such as ions, through the membrane.
In addition to moving small ions and molecules through the membrane, cells also need to remove and take in larger molecules and particles.