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  2. pH - Wikipedia

    en.wikipedia.org/wiki/PH

    pH can be measured using indicators, which change color depending on the pH of the solution they are in. By comparing the color of a test solution to a standard color chart, the pH can be estimated to the nearest whole number. For more precise measurements, the color can be measured using a colorimeter or spectrophotometer.

  3. Acid–base homeostasis - Wikipedia

    en.wikipedia.org/wiki/Acid–base_homeostasis

    An acid-base diagram for human plasma, showing the effects on the plasma pH when P CO 2 in mmHg or Standard Base Excess (SBE) occur in excess or are deficient in the plasma [23] Acid–base imbalance occurs when a significant insult causes the blood pH to shift out of the normal range (7.32 to 7.42 [16]).

  4. Diurnality - Wikipedia

    en.wikipedia.org/wiki/Diurnality

    Many plants are diurnal or nocturnal in the opening and closing of their flowers. Most angiosperm plants are visited by various insects, so the flower adapts its phenology to the most effective pollinators. [11] For example, the baobab is pollinated by fruit bats and starts blooming in late afternoon; the flowers are dead within twenty-four ...

  5. Nyctinasty - Wikipedia

    en.wikipedia.org/wiki/Nyctinasty

    It has been argued that for plants that display foliar nyctinasty, it is a crucial mechanism for survival; however, most plants do not exhibit any nyctinastic movements. [1] Nyctinasty is found in a range of plant species and across xeric , mesic , and aquatic environments, suggesting that this singular behavior may serve a variety of ...

  6. Anthocyanin - Wikipedia

    en.wikipedia.org/wiki/Anthocyanin

    In flowers, the coloration that is provided by anthocyanin accumulation may attract a wide variety of animal pollinators, while in fruits, the same coloration may aid in seed dispersal by attracting herbivorous animals to the potentially-edible fruits bearing these red, blue, or purple colors.

  7. Photosynthesis - Wikipedia

    en.wikipedia.org/wiki/Photosynthesis

    [105] [106] In tropical grasses, including maize, sorghum, sugarcane, Bermuda grass and in the dicot amaranthus, leaf photosynthetic rates were around 38−40 μmol CO 2 ·m −2 ·s −1, and the leaves have two types of green cells, i.e. outer layer of mesophyll cells surrounding a tightly packed cholorophyllous vascular bundle sheath cells.

  8. Soil pH - Wikipedia

    en.wikipedia.org/wiki/Soil_pH

    Global variation in soil pH. Red = acidic soil. Yellow = neutral soil. Blue = alkaline soil. Black = no data. Soil pH is a measure of the acidity or basicity (alkalinity) of a soil. Soil pH is a key characteristic that can be used to make informative analysis both qualitative and quantitatively regarding soil characteristics.

  9. Phytic acid - Wikipedia

    en.wikipedia.org/wiki/Phytic_acid

    At physiological pH, the phosphates are partially ionized, resulting in the phytate anion. The (myo) phytate anion is a colorless species that has significant nutritional role as the principal storage form of phosphorus in many plant tissues, especially bran and seeds. It is also present in many legumes, cereals, and grains.