Prepare for NEET with Botany-specific practice questions. Covering all major Botany chapters, this is perfect for your NEET Biology needs.
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.
The main function of bulliform cells in grasses is:
To roll the leaf during water stress
Photosynthesis
Gaseous exchange
Storage of water
A researcher modifies a plant's guard cells to overexpress aquaporins. Under water-deficient conditions, which of the following is the MOST LIKELY consequence?
Increased stomatal opening
Increased transpiration
Increased water uptake
Increased stomatal closure
In a CAM plant experiencing prolonged water stress, which adaptation is MOST likely to minimize the transpiration and photosynthesis compromise?
Increased stomatal density
Further temporal separation of CO2 uptake and fixation
Shifting from CAM to C4 photosynthesis
Reducing leaf surface area
A plant is exposed to high light intensity and limited water availability. Which of the following is the most likely physiological response?
Increased stomatal opening to maximize CO2 uptake for photosynthesis.
No change in stomatal aperture, maintaining a balance between transpiration and photosynthesis.
Complete closure of stomata to prevent water loss, halting photosynthesis.
Partial closure of stomata to reduce transpiration, even at the cost of reduced CO2 uptake for photosynthesis.
The transpiration-photosynthesis compromise is most pronounced in which type of environment?
Cool and humid
Hot and humid
Hot and dry
Cool and dry
On a hot, dry day, a plant is most likely to:
Open its stomata fully to maximize photosynthesis.
Partially close its stomata to conserve water, even though this reduces photosynthesis.
Completely close its stomata to prevent any water loss.
Increase its rate of photosynthesis to compensate for water loss.
Which environmental factor has the most direct impact on the transpiration and photosynthesis compromise?
Soil pH
Light intensity
Water availability
Temperature
In a monocot leaf, the bulliform cells are primarily responsible for which of the following adaptations?
Increasing the surface area for photosynthesis
Providing structural support to the leaf blade
Storing water for use during drought conditions
Rolling of the leaf during water stress
The bulliform cells in a dicot leaf primarily contribute to:
Increased photosynthetic efficiency.
Enhanced gaseous exchange.
Leaf rolling or folding during water stress.
Protection against herbivores.
