Answer:
Stomata open or close depending on the urgency of the occlusive cells that form it. If they swell because they receive water from the adjacent cells, the stoma opens, as its cell walls buckle, with which gases enter or leave through the ostiole. If on the contrary, the adjacent cells absorb the water from the occlusives and these, ultimately, lose water, they become flaccid and the stoma closes, allowing neither the exit nor the entry of gases. Other factors that influence the regulation of stomatal opening and closing are the circadian rhythm (day / night) and the concentration of CO2.
Explanation:
A stoma is basically a pore that is used for gas exchange with the environment and the transpiration of the plant. It is surrounded by two cells, called occlusive or guard cells, these have chloroplasts and have a thickening on their adjacent surfaces. Stomatal movements depend on changes in the turgor pressure of the occlusive cells and adjacent epidermal cells. Stomata open when water diffuses through osmosis into the occlusive cells from the surrounding epidermal cells. As the turgor pressure increases in the stomatal cells, it induces them to swell and the stomata open. In contrast, when the turgor pressure decreases, the occlusive cells become flaccid and the thickened walls come together, closing the pore. Other factors that influence the regulation of stomatal opening and closing are the circadian rhythm (day / night) and the concentration of CO2. Guard cells regulate the opening of stomata by integrating different signals, both endogenous and exogenous (environmental).Stomatal opening occurs when the concentration of CO2 in the occlusive cell decreases as a result of photosynthesis, while it closes when this concentration increases, even in the presence of light. The plants implement a temporary regulation of the stomata to limit water losses during the CO2 absorption process, that is, the stomata are opened during the day and closed at night to prevent unnecessary water losses, since during this period, photosynthesis does not occur and there is no demand for CO2. With the first rays of sunlight, the plant again begins to photosynthesize, again the stomata open since the demand for CO2 is high. The stomatal opening favors the transpiration of the plant.
A plants root cap helps the roots recieve water so......yeah
The choices can be found elsewhere and as follows:
a. membranes lower the activation energy of biochemical reactions.
<span>b. reactants are within close proximity to each other. </span>
<span>c. membrane-bounded organelles act as catalysts for biochemical reactions. </span>
<span>d. reactants move faster within membrane-bounded organelles. </span>
<span>e. reactants are less likely to encounter each other within membrane-bounded organelles. </span>
The correct answer is option C. Membrane bounded organelles facilitate faster chemical reactions because it <span>act as catalysts for biochemical </span>reactions. Hope this answers the question.
Nitrogen is the most abundant gas in the atmosphere, which is about the 78% of the atmosphere. So the main source of nitrogen gas is the atmosphere air.
<h3>What is responsible for returning nitrogen to the atmosphere as nitrogen gas?</h3>
Denitrification is the process that converts nitrate to nitrogen gas, thus removing bioavailable nitrogen and returning it to the atmosphere. Nitrogen makes up 78 percent of the air we breathe, and it's thought that most of it was initially trapped in the chunks of primordial rubble that formed the Earth. When they smashed together, they coalesced and their nitrogen content has been seeping out along the molten cracks in the planet's crust ever since.
So we can conclude that: Nitrogen is the most abundant gas in the atmosphere, which is about the 78% of the atmosphere. So the main source of nitrogen gas is the atmosphere air.
Learn more about Nitrogen here: brainly.com/question/1380063
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