A scientist is studying a newly discovered plant species. Microscopic analysis of the stem reveals living cells with unevenly thickened cell walls, primarily composed of pectin and hemicellulose, providing flexible support. These cells lack lignin and are found in patches beneath the epidermis. Which tissue type is being observed?
Collenchyma
Sclerenchyma
Parenchyma
Xylem
Related Questions
Which cell wall component contributes significantly to the flexibility of collenchyma cells?
Pectin
Lignin
Suberin
Cutin
Cell wall of collenchyma composed of?
Cellulose
Hemi cellulose
Pectin
All of these
Identify from the following, a plant tissue in which lignin does not occur in the cell walls?
Collenchyma
Sclerenchyma fibres
Sclereids
Xylem tracheae
A mutation in a plant prevents the proper synthesis of pectin. Which tissue would be MOST directly affected by this mutation and what would be the primary consequence?
Sclerenchyma; decreased rigidity in mature tissues
Parenchyma; reduced storage capacity
Collenchyma; reduced flexible support in growing regions
Xylem; impaired water transport
Collenchyma tissue is primarily involved in providing what to plants?
Flexible support
Storage of food
Transport of water
Photosynthesis
The primary function of collenchyma in plants is to:
Provide flexible support to growing parts
Transport water and nutrients
Store food reserves
Protect against pathogens
Which component is primarily responsible for the thickening of collenchyma cell walls?
Pectin
Lignin
Suberin
Cutin
Collenchyma cells often contain chloroplasts. What is the primary function of these chloroplasts in collenchyma tissue?
Photosynthesis, contributing to the plant's energy production.
Storage of starch and other carbohydrates.
Providing structural support to the cell.
Synthesis of pigments for coloration.
Collenchyma is living mechanical tissue select the incorrect about it
Has cell wall thickening
Lacks protoplasm at maturity
Provides mechanical support
Generally lacks intercellular spaces
Which statement BEST describes the relationship between collenchyma and sclerenchyma?
Both are composed of living cells at maturity.
Both have evenly thickened cell walls.
Both contain lignin in their cell walls.
Both provide structural support, but collenchyma provides flexible support in growing regions while sclerenchyma provides rigid support in mature regions.
