Seed Germination Types (With Diagram) - Biology Discussion
The three main types are: (1) Hypogeal Germination (2) Epigeal Germination and (3) Vivipary (Viviparous Germination). Type # 1. Hypogeal Germination: In this kind of germination, the cotyledons do not come out of the soil surface. In such seeds the epicotyl (i.e., part of embryonic axis between plumule and cotyledons) elongates pushing the ...
Germination | Description, Process, Diagram, Stages, Types,
2024年11月18日 · germination, the sprouting of a seed, spore, or other reproductive body, usually after a period of dormancy. The absorption of water, the passage of time, chilling, warming, oxygen availability, and light exposure may all operate in initiating the process.
Germination of Seed: Types, Condition Required and Other Details
Germination is a process by which the embryo in the seed becomes activated and begins to grow into a new seedling (Fig. 3.3a). Types of Germination: There are two types of germination: 1. Epigeal Germination: In this type of germination, the hypocotyl elongates rapidly and arches upwards pulling the cotyledons which move above the soil.
Seed Germination: Types, Processing Stages & Affecting Factors
2023年6月22日 · Seed germination can be classified into two types based on the fate of the cotyledons: 1. Epigeal Germination. During epigeal, the cotyledon is pushed out of the soil. This happens due to the rapid growth and elongation of the hypocotyl. E.g., castor and bean. 2. Hypogeal Germination.
Seed Germination in Biology: Definition, Types and Importance
Types of seed germination. Radicle is the first part which comes out during seed germination. It comes out through the micropyle and develops into the root system. This helps the young plant to fix in the soil and to absorb water, nutrients etc. after this the epicotyl and hypocotyl develop and form the shoot system.
Seed Germination: Types, Stages & Diagrams - Vaia
2023年3月23日 · Seed germination takes place in the following three stages: Inhibition: the seed imbibes (takes up) a lot of water, causing the seed coat to expand and soften. Interim or lag phase: the seed’s internal physiology is activated, so its cells respire and the seed begins to produce proteins and use up its food reserves.
Seed – Structure, Types, Development, Germination, Dispersal
2024年9月2日 · Germination of Seed. Seed germination is a crucial biological process wherein a seed develops into a new plant. This process begins with the activation of the embryo’s essential characteristics and occurs under suitable environmental …
2.2 Introduction to Seed Germination – The Science of Plants
At germination, the seed’s metabolic pathways are activated, leading to embryo growth and emergence of a new seedling. Germination begins with activation by water uptake. We call this imbibition, and sometimes the seed or fruit requires
Two types of germination are commonly found in cultivated plants. 1. Epigeal germination: Seed germination in dicots in which the cotyledons come above the soil surface. In this type, the hypocotyl elongates and raises the cotyledons above the ground surface, it is called as epigeous or epigeal germination.
Based on the fate of the cotyledons, two kinds of seed germination occur, and neither appears to be related to seed structure. These two types are illustrated by the germination of bean and pea seeds. Epigeal germination is characteristic of bean and pine seeds and is considered evolutionarily more primitive than hypogeal germination.
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