Prepare for NEET with Botany-specific practice questions. Covering all major Botany chapters, this is perfect for your NEET Biology needs.
Lenticels are found on the stem and perform which function?
Photosynthesis
Transpiration
Gaseous exchange
Water absorption
What are the small openings on the underside of a leaf called that regulate gas exchange?
Cuticle
Veins
Trichomes
Stomata
The movement of oxygen from alveoli to pulmonary capillaries is best described as:
Active transport requiring ATP
Facilitated diffusion via carrier proteins
Simple diffusion driven by a partial pressure gradient
Osmosis across a semipermeable membrane
Which of the following processes is primarily driven by diffusion?
Active transport of ions across a cell membrane
Bulk flow of water in xylem
Gas exchange in alveoli
Muscle contraction
If a plant's stomata are completely closed, which of the following would be the most immediate consequence?
Increased transpiration
No CO2 uptake and cessation of photosynthesis
Increased water uptake by roots
Wilting of leaves
Which of the following best describes the transpiration and photosynthesis compromise?
Plants prioritize transpiration over photosynthesis in hot conditions.
Photosynthesis always takes precedence over transpiration.
Plants must balance the need to take in CO2 for photosynthesis with the risk of water loss through stomata.
Transpiration and photosynthesis are unrelated processes.
What role do stomata play in the transpiration and photosynthesis compromise?
They only allow CO2 intake for photosynthesis.
They only facilitate water loss through transpiration.
They regulate the exchange of gases, including CO2 intake and water vapor release.
They have no role in either transpiration or photosynthesis.
In a typical dorsiventral dicot leaf, the spongy mesophyll is characterized by:
Tightly packed cells maximizing light absorption.
Large, thin-walled cells storing water and nutrients.
Loosely arranged cells with large intercellular spaces facilitating gaseous exchange.
Specialized cells containing crystals and tannins.
Which cells regulate the opening and closing of stomata in a dicot leaf?
Epidermal cells
Palisade cells
Guard cells
Mesophyll cells
What is the primary role of spongy mesophyll in a dicot leaf?
Water storage
Photosynthesis
Protection
Facilitating gas exchange
