Question

Vessels are found in
A. All angiosperms and some gymnosperm
B. Most of the angiosperm and few gymnosperm
C. All angiosperm, all gymnosperm and some Pteridophyta
D. All Pteridophyta

Answer 1

Hint: The kingdom plantae is divided into four sub groups that are Pteridophyte, Bryophyta, gymnosperm, and angiosperm. The classification is based on the type of tissue found in this plant. The most advanced type of plants consists of vascular tissue that is involved in conduction of nutrients and food throughout the plant body.

Complete Answer:
- The diversity of plants and its classification depends on adaptation. The plants are classified into twelve divisions. These twelve divisions of plants are divided into two groups; the non-vascular plants and the vascular plants.
- The non-vascular plants have lack of specialized transport tissue while the vascular plants have specialized transport tissue. Along with cell walls in plant cells there are many different cells that have specific functions and form tissue.
- There are three types of cells that form the plant tissues. They function together to provide food production and storage; give flexibility, support, and strength to the plants. Parenchyma is the most flexible and thin cell found in the plants.
- Similarly the transportation of nutrients, water, and other substances in plants are carried out by tissue like xylem and phloem. The phloem tissue is made of living cells, involved in transportation of food and organic materials. They transport organic matter that forms during photosynthesis, especially the sugar, to different parts of the plant.
- The xylem tissue is made of dead cells, involves in the transportation of water and other nutrients, and composed of fibers and tracheids, therefore, xylem is the vessels of plants.
Now, the vessels are the cell type found in xylem that conducts water and nutrients inside the plants. Vessels are typically found in flowering plants that are angiosperm and absent in gymnosperm.

Thus, the correct answer is ‘A’. All angiosperm and some gymnosperm.

Note: Pteridophytes are seedless vascular tissue that comprises true roots, stem, and leaves. The vascular tissue includes xylem and phloem that involve in the conduction of water and other substances throughout the plant body.