Which tissue system is primarily responsible for providing mechanical strength and flexibility to plants, enabling them to withstand various environmental stresses like wind and bending?
Parenchyma
Collenchyma
Sclerenchyma
Xylem
Related Questions
I. Roots are unicellular II. Trichomes are multicellular usually Identify the correct statement and select the correct option
Both I and II are correct
Only I is correct
Only II is correct
Neither I nor II is correct
The periderm, a complex tissue that replaces the epidermis in older stems and roots of woody plants, comprises which of the following tissues?
Phellem, phellogen, and phelloderm
Epidermis, cortex, and endodermis
Xylem, phloem, and vascular cambium
Parenchyma, collenchyma, and sclerenchyma
Conjoint vascular bundles are common in
Roots
Stems
Leaves
Both (2) and (3)
Ground tissue includes
All tissues except epidermis and vascular bundles
Epidermis and cortex
All tissues internal to endodermis
All tissues external to endodermis
Which statements are correct about guard cells?
I. They are modified ground tissue
II. They are chlorophyllous
III. Its outer wall is thin and inner wall is highly thickened
IV. They regulate stomatal movement for transpiration and gaseous exchange
All except I
All except II
All except III
All except IV
Select the incorrect statements
I. Excessive loss of water is prevented by epidermis
II. Stomata develop from epidermal tissue
III. Photosynthesis is one of the primary function of leaf ground tissue
Only I
Only II
Only III
None of the statements are incorrect
Velamen is found in
Vanda
Rosa
Viscum
Santalum
Epidermis is derived from
Cambium
Primary xylem
Secondary xylem
Protoderm
Vascular bundle, in which two patches of phloem are present on both sides of xylem is
Collateral
Bicollateral
Concentric
Radial
Jute is mainly composed of
Xylem
Secondary bastfibre
Phloem
Cortex
