Assertion: Xylem transport water and mineral in plants.
Reason: Most of the cells present in xylem are dead
a) Both A and R are true and R is the correct explanation of the assertion
b) Both A and R are true but R is not the correct explanation of the assertion
c) A is true but R is false
d) A is false
Answers
Answer:
Xylem is a water conducting tissue in plant body. Xylem is made of tracheids, vessels (tracheae), xylem parenchyma and xylem fibres. Of these four, tracheids and vessels (tracheae) are chief conducting elements in xylem.
Xylem is a water conducting tissue in plant body. Xylem is made of tracheids, vessels (tracheae), xylem parenchyma and xylem fibres. Of these four, tracheids and vessels (tracheae) are chief conducting elements in xylem. Tracheids are hard, thick, elongated, tube-like, dead cells having tapering ends. They possess long cavity or lumen which extends throughout the tracheid.
Xylem is a water conducting tissue in plant body. Xylem is made of tracheids, vessels (tracheae), xylem parenchyma and xylem fibres. Of these four, tracheids and vessels (tracheae) are chief conducting elements in xylem. Tracheids are hard, thick, elongated, tube-like, dead cells having tapering ends. They possess long cavity or lumen which extends throughout the tracheid. Vessels are also called as tracheae. They are tube like, cylindrical, dead cells with lignified walls and large cavity. Due to death of tracheids and vessels, the cells possess a large cavity or lumen and form a pipe-line like structure through which solutes move freely.
Xylem is a water conducting tissue in plant body. Xylem is made of tracheids, vessels (tracheae), xylem parenchyma and xylem fibres. Of these four, tracheids and vessels (tracheae) are chief conducting elements in xylem. Tracheids are hard, thick, elongated, tube-like, dead cells having tapering ends. They possess long cavity or lumen which extends throughout the tracheid. Vessels are also called as tracheae. They are tube like, cylindrical, dead cells with lignified walls and large cavity. Due to death of tracheids and vessels, the cells possess a large cavity or lumen and form a pipe-line like structure through which solutes move freely. Thus, the correct answer is option A.
Answer:
Explanation:
a) Both A and R are true and R is the correct explanation of the assertion