What is guard cell and its function? Guard cells are located in the leaf epidermis and pairs of guard cells surround and form stomatal pores, which regulate CO2 influx from the atmosphere into the leaves for photosynthetic carbon fixation. Stomatal guard cells also regulate water loss of plants via transpiration to the atmosphere. Why do […]
What food is available in the ocean?
What food is available in the ocean? The most common species making up the global fisheries are herring, cod, anchovy, flounder, tuna, shrimp, mullet, squid, crab, salmon, lobster, scallops and oyster. Mollusks and crustaceans are also widely sought. The fish that are caught are not always used for food. Where is the ocean found? The […]
What is the maximum height when the final velocity is zero?
How the planets are formed?
How the planets are formed? Planets form from particles in a disk of gas and dust, colliding and sticking together as they orbit the star. The planets nearest to the star tend to be rockier because the star’s wind blows away their gases and because they are made of heavier materials attracted by the star’s […]
What are two properties of the image seen from a plane mirror?
What are two properties of the image seen from a plane mirror? Images formed by plane mirrors are virtual, upright, left-right reversed, the same distance from the mirror as the object’s distance, and the same size as the object. What are the four properties of plane mirror? Properties of an image formed by plane mirror […]
How do you find the pH of 0.01 m NaOH?
Why do earthquakes occur in western South America?
Why do earthquakes occur in western South America? Most of the large earthquakes in South America are constrained to shallow depths of 0–70 km as a result of both crustal and interplate deformation. Crustal earthquakes are caused by deformation and mountain building in the overriding South America plate and generate earthquakes as deep as approximately […]
Do mollusks have a closed circulatory system?
Do mollusks have a closed circulatory system? Most mollusks have an open circulatory system but cephalopods (squids, octopus) have a closed circulatory system. The blood pigment of mollusks is hemocyanin, not hemoglobin. The heart of a clam can be seen in the photograph below. What organisms have a closed circulatory system? In (a) closed circulatory […]
How are gas turbines cooled?
How are gas turbines cooled? Fogging. Inlet air fogging consists of spraying finely atomized water (fog) into the inlet airflow of a gas turbine engine. The water droplets evaporate quickly, which cools the air and increases the power output of the turbine. What is reheating and regeneration of gas turbine? Reheating is applied in a […]
What is the most significant predictor of basal metabolic rate?
What is the most significant predictor of basal metabolic rate? The major factor determining basal metabolic rate (BMR) is fat-free mass (FFM) (1–3), with some studies finding an additional contribution of fat mass (FM) (4, 5), but others failing to find such an effect (6, 7). Which person would you predict to have the highest […]