Complete the following sentences to describe the stages of eudicot development. Then, place the sentences in chronological order. Choices may be used more than once. Drag the text blocks below into their correct order. Immediately after double fertilization, the small, densely packed _ and the are visible. During the stage, the root and shoot apical meristems are visible. The is also now present. During the stage, cotyledons begin to appear and rapid cell division takes place. The mature embryo consists of many parts. The will give rise to the shoot. The is found at the tip and consists of a pair of small leaves. The below the and contributes to stem development. The gives rise to the roots. The encloses and protects the embryo. During the stage, the root-shoot axis is established. The cells near the become the root and the cells near the other end become the shoot. The divides repeatedly in different planes to form a multicellular which transfers nutrients to the _ is also visible.
The Correct Answer and Explanation is:
The stages of eudicot development can be ordered chronologically as follows:
- Immediately after double fertilization, the small, densely packedembryo and the endosperm are visible.
- Right after double fertilization, the zygote develops into the embryo, and the surrounding tissue develops into the endosperm, which provides nutrients to the developing embryo.
- During theglobularstage, cotyledons begin to appear and rapid cell division takes place.
- During the globular stage, the embryo begins to form distinct structures such as the cotyledons (seed leaves), and cell division accelerates.
- During theheartstage, the root and shoot apical meristems are visible. Thehypocotylis also now present.
- The heart stage marks the appearance of the shoot and root apical meristems, which are responsible for the growth of the plant. The hypocotyl, the region between the cotyledons and the root, becomes visible.
- Theepicotylwill give rise to the shoot.
- The epicotyl is the portion of the embryo above the cotyledons that will eventually form the shoot, including the stem and leaves.
- Thecotyledonsare found at the tip and consist of a pair of small leaves.
- The cotyledons are the first leaves of the plant embryo, often providing nutrients early in development before the plant begins photosynthesis.
- Thehypocotylbelow theepicotylcontributes to stem development.
- The hypocotyl connects the cotyledons to the root system and contributes to stem development, providing structural support as the plant grows.
- Theradiclegives rise to the roots.
- The radicle is the embryonic root and gives rise to the mature root system.
- Theseed coatencloses and protects the embryo.
- The seed coat serves as a protective barrier, shielding the embryo from physical damage and environmental conditions.
- During thematurestage, the root-shoot axis is established. The cells near theradiclebecome the root and the cells near the other end become the shoot.
- The mature stage marks the completion of initial development, where the plant is fully formed with the root-shoot axis, defining the growth direction.
- The endosperm divides repeatedly in different planes to form a multicellular tissue which transfers nutrients to the embryo is also visible.
- The endosperm divides to form nutrient-dense tissues that will nourish the developing embryo until it can begin independent nutrition.
This chronological sequence represents how the eudicot embryo develops from fertilization through the establishment of its root-shoot axis and the differentiation of the essential structures.
