Answer:
The history of net photosynthesis and transpiration per unit leaf area was determined for intact soybean leaves from their unfolding to senescence during flowering and pod filling on untreated (podded) and partially depodded plants growing in a glasshouse. Leaf diffusive resistances to CO2 were calculated and a water use efficiency parameter was derived (net mass of carbon dioxide fixed per unit mass of water transpired per millibar vapour pressure deficit). Net photosynthesis and transpiration behaved similarly through all stages of leaf development. A number of peaks were evident in these parameters. The first was associated with leaf expansion and occurred when the leaf reached its maximum area. The second peak coincided with flowering of the plant and later peaks occurred during pod filling. Stomatal and mesophyll resistances also exhibited similar behaviour during the life of the leaf; the possible causes of this linkage are discussed. Water use efficiency increased rapidly up to the time of full lamina expansion. Thereafter, it rose slowly or remained stable until leaf senescence approached, when the efficiency declined. Net photosynthesis and transpiration of leaves were very similar in both podded and partially depodded plants. It appears that to prevent a shortage of assimilate during flowering and pod filling, photosynthesis may be maintained or increased in some leaves and the response is not related to the number of pods available for filling. The increases in photosynthesis were correlated with both higher stomatal and mesophyll conductances. Mechanisms by which the plant may control leaf photosynthesis are discussed.
B. CONSISTENCY.
Soil consistency is most dependent on soil moisture.
Soil consistency are identifies as Moist Soil, Wet Soil, and Dry Soil.
Moist soil are loose when dry or wet, friable (using gentle pressure), and firm (using moderate pressure)
Wet soil are plastic and sticky.
Dry soil are either soft or hard.
Connective tissue.
- tissue that provides structure, support, and protection to other human tissues and organs. In addition to helping to transport nutrients and other substances between tissues and organs, connective tissue also helps to store fat and mend damaged tissue. A gel-like substance, fibers, and cells make up connective tissue.
- connective tissue is a set of tissues found throughout the body that help to keep the body and its organs in shape as well as to give internal cohesion and support. The more specialized and recognized variations—bone, ligaments, tendons, cartilage, and adipose (fat) tissue—as well as a variety of fibrous tissue types that differ only in density and cellularity are included in the connective tissues.
- The majority of the organs in the abdominal cavity are connected to the abdominal wall by a membrane strip called the mesentery.
Therefore, the correct answer is connective tissue.
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Answer:
Cell walls prevent cells from dying in hypertonic conditions.
Explanation:
The cell wall is a rigid structure, essential for the survival of fungi, and knowledge of its composition may be useful for the development of new antifungal drugs. This wall does not alter the characteristics of the fungus, it stimulates and presses the fungus to flourish.
The fungal cell walls are similar in function to the cell walls of many protists, bacteria and plants. They prevent cells from bursting in hypotonic environments, but are unable to prevent cells from dying in hypertonic conditions. These cell walls also provide the cell with a degree of physical environmental protection and differ in the molecular composition of plant cell walls, as the fungal cell walls are chitin, while the plant cell walls are formed by cellulose.
Nucleus. The answer is this because:
The nucleus is the central and most important part of a cell and so it directs the cell activities.
