Which structural feature of guard cells facilitates their function in stomatal regulation MOST effectively?
Uniformly thickened cell walls.
Radially oriented cellulose microfibrils in the cell walls.
Large central vacuole for water storage.
Presence of chloroplasts for photosynthesis.
Related Questions
The insectivorous plants are
Autotrophic
Heterotrophic
Both (1) and (2)
None of the above
Which of the following is NOT a function of a leaf?
Photosynthesis
Transpiration
Gas exchange
Absorption of water from soil
The leaf parts gets modified into spines in order to
Reduce transpiration
Reduce surface area
Protect the plant from grazing animals
All of the above
Which tissue layer is responsible for the transport of organic materials synthesized in the leaf?
Xylem
Phloem
Palisade parenchyma
Spongy parenchyma
Which of the following is NOT a modification of a leaf?
Tendril
Spine
Tuber
Scale leaf
The network of veins in a leaf primarily serves to:
Store food
Perform photosynthesis
Protect the leaf
Transport water and nutrients
The leaf parts gets modified into spines in order to
Reduce transpiration
Reduce surface area
Protect the plant from grazing animals
All of the above
Which of the following is not a stem modification?
Pitcher of
Thorns of citrus
Tendrils of cucumber
Flattened structures of
Which function is NOT typically associated with a stem modification?
Food storage
Support
Vegetative propagation
Absorption of nutrients from the soil
The bulliform cells in the leaves of certain grasses play a crucial role in:
Increasing the photosynthetic surface area.
Secreting resinous substances for protection.
Leaf rolling and unfolding in response to water availability.
Storing water for use during drought.
