Free NEET Botany Questions and Answers

Question 1

Which of the following tissues participates in the conduction of water?

Accepted Answer

Xylem and Phloem

Answer

Xylem is the primary vascular tissue responsible for the efficient conduction of water and dissolved minerals from the roots throughout the plant. While phloem's main role is transporting sugars, it also contains water as the solvent for these sugars, thus participating in water movement within the plant. Therefore, both xylem and phloem are involved in the overall conduction of water.

Question 2

Which plant species do not have xylem vessels?

Accepted Answer

Pinus

Answer

Pinus is a genus of conifers, belonging to the gymnosperms. A characteristic feature of most gymnosperms, including Pinus, is the absence of true xylem vessels. Their water conduction is primarily carried out by tracheids, which are elongated, tapering cells with pitted walls, serving as the main water-conducting elements.

Question 3

The component of xylem is .

Accepted Answer

Tracheids, fibres and vessels

Answer

Xylem is a complex vascular tissue composed of four main types of elements. These include tracheids and vessels, which are the primary water-conducting cells, along with xylem fibers that provide mechanical support. Xylem parenchyma cells are also components, responsible for storage and radial conduction, but are not listed in this specific option, which focuses on the main structural and conducting elements.

Question 4

Which of the following vessels is the most sophisticated water-conducting component?

Accepted Answer

Multiple vessels

Answer

Multiple vessels, also known as vessel elements, are generally considered the most sophisticated and efficient water-conducting components in plants. They form continuous, wide tubes through which water can flow with less resistance compared to tracheids. This structural adaptation allows for rapid and extensive water transport, particularly in angiosperms.

Question 5

The _____ is the sole live component of the xylem tissue.

Accepted Answer

Xylem Parenchyma

Answer

Xylem tissue is composed of both living and dead cells. While tracheids, xylem fibers, and vessels are typically dead at maturity, forming hollow conduits or supportive structures, xylem parenchyma cells remain living. These living cells are responsible for functions such as food storage (starch and fats) and the radial conduction of water within the xylem.

NEET - National Eligibility cum Entrance Test Practice Test

NEET - National Eligibility cum Entrance Test Practice Test

Free NEET Botany Questions and Answers