A plant species adapted to waterlogged conditions exhibits aerenchyma formation in its roots. Which of the following BEST explains the adaptive advantage of this anatomical modification?
Increases root surface area for enhanced water absorption
Provides structural support to prevent root collapse in saturated soil
Facilitates oxygen transport to submerged root tissues, enabling aerobic respiration
Stores excess water for use during periods of drought
Related Questions
In maize and sugarcane, the supporting roots that arise from the lower nodes of the stem are:
Prop roots
Climbing roots
Stilt roots
Clinging roots
Which type of root develops from the stem base of plants like the banyan tree, providing additional support?
Adventitious roots
Tap roots
Fibrous roots
Storage roots
At root tip, number of divisions to produce 100 cells, is
6
7
9
100
A plant species adapted to waterlogged conditions exhibits aerenchyma formation in its roots. Which of the following BEST explains the adaptive advantage of this anatomical modification?
Increases root surface area for enhanced water absorption
Provides structural support to prevent root collapse in saturated soil
Facilitates oxygen transport to submerged root tissues, enabling aerobic respiration
Stores excess water for use during periods of drought
Which adaptation minimizes the role of roots in water absorption for a particular plant group?
Specialized structures on leaves and stems for water absorption
Extensive root systems
Deep root penetration
Symbiotic relationships with fungi
A researcher observes that a particular plant species exhibits significantly reduced root hair development when grown in a hydroponic solution lacking phosphorus. Which physiological role of phosphorus in root hair formation is MOST likely affected?
Major component of cell wall cellulose
Cofactor for enzymes involved in lignin biosynthesis
Nucleic acid synthesis and energy transfer for cell division and elongation
Regulation of stomatal closure to prevent water loss
Which adaptation is NOT commonly associated with plants that exhibit vivipary?
Specialized aerial roots
Tolerance to saline conditions
Thick seed coat
Rapid seedling growth
Which specific tissue within the root endodermis is primarily responsible for regulating the passage of water and minerals into the stele, and how does its structure facilitate this function?
Pericycle; its meristematic nature allows for selective uptake
Cortex; its large intercellular spaces facilitate diffusion
Casparian strip; suberin deposition in cell walls blocks apoplastic pathway
Phloem; its active transport mechanisms selectively move nutrients
Mangrove plants are known for their unique adaptations. Which of the following features helps them thrive in intertidal zones?
Pneumatophores only
Vivipary only
Both pneumatophores and vivipary
Neither pneumatophores nor vivipary
Identify the INCORRECT statement regarding sweet potato.
They are a dicot.
They are a root vegetable.
They are a good source of Vitamin A.
They are a monocot.
