Which cell type in xylem conducts water?
Xylem parenchyma
Xylem fibres
Companion cells
Tracheids and vessels
Related Questions
Vascular system consists of
I. xylem
II. phloem
III. ground meristem
IV. epidermal meristem
Select the correct combination from the given options
I and II
I, II and III
I, II and IV
I, III and IV
What is the primary function of the Casparian strip in the endodermis of roots?
Provides structural support to the root.
Stores starch and other nutrients.
Regulates the passage of water and minerals into the xylem.
Facilitates gas exchange between the root and the soil.
From evolutionary point of view, tracheids and sieve cells are more primitive than tracheae and sieve tubes respectively. The angiosperms have
Tracheae and sieve tubes
Tracheids, tracheae and sieve tubes
Tracheae, sieve cells and sieve tubes
Tracheids, tracheae and sieve cells
In a conjoint, collateral, and open vascular bundle, which tissue separates the xylem and phloem?
Cambium
Pith
Cortex
Pericycle
Which of the following is NOT a characteristic of complex permanent tissues?
Composed of only one type of cell
Involved in various functions like support, conduction, and protection
Formed by differentiation of meristematic tissues
Can be categorized into xylem and phloem
Which tissue is responsible for the transport of organic nutrients in plants?
Xylem
Phloem
Sclerenchyma
Parenchyma
Vessels are found in
All angiosperms and some gymnosperms
Most of the angiosperms and few gymnosperms
All angiosperms, all gymnosperms and some pteridophytes
All pteridophytes
The protoxylem and protophloem in a dicot stem differ primarily in their:
Maturation time and position relative to the metaxylem and metaphloem
Cell wall composition and function
Presence or absence of living cells at maturity
Overall size and shape of their conducting elements
Which of the following statements is INCORRECT regarding collenchyma?
Collenchyma cells are living at maturity.
Collenchyma cells provide flexible support to growing plant parts.
Collenchyma cell walls are unevenly thickened.
Collenchyma cell walls contain lignin.
Which of the following combinations of cell types are exclusively found in complex tissues and not simple tissues?
Sieve tubes, companion cells, and tracheids
Parenchyma, collenchyma, and sclerenchyma
Xylem parenchyma, phloem parenchyma, and sclereids
Tracheids, vessels, and xylem fibres
