In water purification works, the hypogeal (or Schmutzdecke) layer is a biological film just below the surface of slow sand filters. It contains microorganisms that remove bacteria and trap contaminant particles. The terms hypogean and hypogeic are used for fossorial and troglobitic (or stygobitic) cave-living organisms.

Hypogeal germination (from Ancient Greek ὑπόγειος [hupógeios] 'below ground', from ὑπό [hupó] 'below' and γῆ [gê] 'earth, ground') is a botanical term indicating that the germination of a plant takes place below the ground. An example of a plant …

2018年9月2日 · The main difference between epigeal and hypogeal germination is that in epigeal germination, the cotyledons emerge out of the soil during germination whereas, in hypogeal germination, the cotyledons remain inside the soil.

The meaning of HYPOGEAL is growing or living below the surface of the ground.

Epigeal and hypogeal are terms used to describe the position of the cotyledonary node during germination, indicating whether the node is above or below ground once the seedling has become established. Epi means above while Hypo means below.

hypogeal，英语单词，主要用作形容词，作形容词时译为“地下的；（种子萌芽）子叶留土的”。

Hypogeal germination is a type of seed germination, which is typical for both the monocot and dicot seeds, where the cotyledons remain inside the soil. The term Hypogeal germination is derived from the ancient Greek word, which refers to the below ground. The Process of Hypogeal germination is described as: During hypogeal germination:

In hypogeous germination, the hypocotyl remains short and the cotyledons do not emerge from the seed but rather force the radicle and epicotyl axis to elongate out of the seed coat. The seed, with the enclosed cotyledons, remains underground, and the epicotyl grows up through the…

2025年3月8日 · Epigeal and hypogeal germination are two ways in which seeds sprout and grow into plants. Epigeal germination lifts the cotyledons above the soil, while hypogeal germination keeps them underground. Both types of germination have advantages depending on the plant species and environmental conditions.

2014年11月21日 · The term germination designates the overall processes beginning with the imbibition of water by dry seed and ending when a portion of the embryo penetrates the seed coat. This process include cell division, embryo enlargement and …