Most mammals including humans are endothermic. Reptiles and amphibians are ectothermic.
Answer:
They have helical thickening of lignin in their walls to prevent collapse
Explanation:
the primary function of Xylem and its conducting vessels tracheids is to provide support and tranport water and minerals in plants.
Xylem vessels have layers of dead materials in the walls called LIGNIN. Lignin is a polymer; a very strong, hard materials that stop water passage through it,because it contains dead cells,
Therefore the presence of deposit of these strong impermeable, ligified walls in its walls prevent its collapse during mass flow of water of transpiration pull.
Answer:
Condensation is the process by which water vapor in the air is changed into liquid water. Condensation is crucial to the water cycle because it is responsible for the formation of clouds. ... Water molecules in the vapor form are arranged more randomly than in liquid water.
Explanation:
The answer to this question is pyruvic acid.
This process is also known as the Embden-Meyerhof or glycolytic pathway and is undoubtedly the most common pathway for glucose degradation to pyruvate in the second stage of catabolism. It is found in all major groups of microorganisms and functions in the presence or absence of oxygen. Glycolysis occurs in the cytoplasmic matrix of prokaryotes and eukaryotes.
The pathway as a whole is divided into two parts: The initial 6 carbon stage and secondly, the 3 carbon stage.
One of the products, glyceraldehyde 3-phosphate, is converted directly to pyruvic acid in a five step process.
Two daughter cells are formed from the parent cell in mitosis.
