where does spinach get calcium from?
soil
rain
sun's rays
atmosphere
Answers
Answer:
Spinach contains approximately 250 mg of calcium per cup. However, it is less easily absorbed than calcium obtained from dairy sources. Spinach has a high oxalate content, which binds to calcium. This makes it difficult for our bodies to use.
Answer:
spinach get calcium from sun's rays.
Explanation:
Calcium is an essential plant nutrient. It is required for various structural roles in the cell wall and membranes, it is a counter‐cation for inorganic and organic anions in the vacuole, and the cytosolic Ca2+ concentration ([Ca2+]cyt) is an obligate intracellular messenger coordinating responses to numerous developmental cues and environmental challenges. This article provides an overview of the nutritional requirements of different plants for Ca, and how this impacts on natural flora and the Ca content of crops.
Calcium deficiency is rare in nature, but excessive Ca restricts plant communities on calcareous soils. Calcium is taken up by roots from the soil solution and delivered to the shoot via the xylem. It may traverse the root either through the cytoplasm of cells linked by plasmodesmata (the symplast) or through the spaces between cells (the apoplast). The relative contributions of the apoplastic and symplastic pathways to the delivery of Ca to the xylem are unknown (White, 2001). However, the movement of Ca through these pathways must be finely balanced to allow root cells to signal using cytosolic Ca2+ concentration ([Ca2+]cyt), control the rate of Ca delivery to the xylem, and prevent the accumulation of toxic cations in the shoot.
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