Which of the following are divisions of angiosperms?
options:
basal
angiosperms
tridicots
eudicots
monocots
The correct answer and explanation is:
The correct answer is: monocots and eudicots.
Angiosperms, or flowering plants, are typically divided into two major groups based on the number of cotyledons (seed leaves) they have. These groups are monocots and eudicots. The term “basal angiosperms” refers to an early-diverging group of angiosperms that don’t fit neatly into the monocot or eudicot categories, but they are not one of the main divisions. Tridicots is not a recognized group in plant taxonomy.
- Monocots:
These are angiosperms that have only one cotyledon in their seeds. Common examples of monocots include grasses, lilies, and palms. Monocots typically have parallel-veined leaves, flower parts in multiples of three, and scattered vascular bundles in their stems. - Eudicots:
Eudicots are the largest group of angiosperms and are characterized by having two cotyledons in their seeds. Most flowering plants, including roses, sunflowers, and beans, are eudicots. They usually have reticulate-veined leaves, flower parts in multiples of four or five, and vascular bundles arranged in a ring. - Basal Angiosperms:
This term refers to a group of primitive angiosperms that have characteristics of both monocots and eudicots. They represent some of the earliest lineages to branch off from the rest of the angiosperm family tree. Examples include the water lilies and the magnolias. - Tridicots:
This is not a valid category in the classification of angiosperms. It is likely a mistake or misunderstanding of the term “dicots,” which is often used synonymously with eudicots.
In summary, monocots and eudicots are the two main divisions of angiosperms, with basal angiosperms being a separate, primitive group.