Question:
Cycas have two cotyledons but not included in angiosperms becuase of
Cycas have two cotyledons but not included in angiosperms becuase of
Updated On: Jun 23, 2024
- Naked ovules
- Seems like monocot
- Circinate ptyxis
- Compound leaves
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The Correct Option is A
Solution and Explanation
Cycas is a gymnosperm and not an angiosperm, primarily due to the presence of naked ovules.
Therefore, the correct option is (A): Naked ovules
In angiosperms (flowering plants), the ovules are enclosed within an ovary, which is a characteristic feature. Gymnosperms, including Cycas, have ovules that are not enclosed by an ovary, and this is one of the key distinctions between the two groups. The presence of two cotyledons in Cycas is a common feature of many gymnosperms, and it is not a distinguishing factor that separates them from angiosperms.
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Concepts Used:
Gymnosperms
Gymnosperms are flowerless plants that produce cones and seeds. It literally means "naked seed". They sit exposed on the surface of leaf-like structures called bracts. Gymnosperms are vascular plants of the subkingdom Embyophyta and include conifers, cycads, ginkgoes, and gnetophytes. They are abundant in temperate forest and boreal forest biomes with species that can tolerate moist or dry conditions.
Characteristics of Gymnosperms
- They do not produce flowers.
- Seeds are not formed inside a fruit.
- They are found in colder regions where snowfall occurs.
- They form cones with reproductive structures.
- Xylem does not have vessels and the phloem and it has no companion cells and sieve tubes.