Question:
In Cycas, open vascular bundle is characterised by
In Cycas, open vascular bundle is characterised by
Updated On: Jul 28, 2022
- phloem being sandwitched between xylem
- cambiun present in between xylem and phloem
- xylem being sandwitched between phloem
- xylem and pholem occuring on different radii
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The Correct Option is B
Solution and Explanation
An open vascular bundle is an arrangement of vascular tissue where xylem and phloem are arranged one above the other and has intrafescicular cambium in between. It is responsible for secondary growth.
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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.