Prepare for NEET Biology Transport in Plants (How Do Plants Absorb Water) with MCQs & PYQs on NEET.GUIDE. Access free practice, previous year questions, and expert help to understand root absorption and mycorrhizal associations.
NEET Questions / Botany / Transport in Plants / How Do Plants Absorb Water
A researcher observes that water absorption by roots is significantly reduced when the plant is treated with a respiratory inhibitor. Which of the following best explains this observation?
Respiratory inhibitors directly block aquaporin function, preventing water movement.
Respiration is essential for maintaining root cell turgidity, which is directly linked to water absorption.
Active transport of ions into the root cells requires energy, creating a water potential gradient that drives water uptake.
Inhibition of respiration disrupts the cohesion-tension theory, preventing water movement through the xylem.
Which of the following scenarios would result in the LEAST efficient water absorption by a plant's roots?
Slightly acidic soil with optimal nutrient availability
Well-aerated soil with moderate water content
Low soil temperature coupled with high humidity
High soil salinity coupled with low soil oxygen levels
Water enters the root hair cells by:
Diffusion
Active transport
Osmosis
Facilitated diffusion
Root endodermis has the ability to actively transport ions …A… because of …B… . Choose the correct pair
into the xylem; presence of Casparian strip
into the cortex; presence of Casparian strip
into the cortex; absence of Casparian strip
into the xylem; absence of Casparian strip
Root endodermis has the ability to actively transport ions …A… because of …B… . Choose the correct pair
A-bidirectionally; B-plasmodesmata
A-undirectionally; B-casparion strips
A-unidirectionally; B-plasmalemma
A-bidrectionally; B-casparion strips
    Study the following statements
I.    Most minerals must enter the roots by active absorption into cytoplasm and epidermal cells
II.    Ions are absorbed by both passive and active transport
III.    Active absorption does not require energy
IV.    Active uptake of ions is responsible for osmosis
Choose the correct option in reference to the statements given above
I and II
II and III
I, II and III
I, II and IV
Ascent of sap is
    Active and requires energy expenditure by the soil
Passive, and no requirement of energy by the plants
Active and requires energy expenditure by the plants
    Passive unless soil is dry
    Which one of the following doesn’t help in molecule transport?
    Diffusion
Osmosis
Surface tension
Active transport
    How would you differentiate between apoplast and symplast?
The apoplast is the continuous space outside the plasma membrane, while the symplast consists of the interconnected cytoplasm of adjacent cells.
Both apoplast and symplast are pathways for intracellular transport, but the apoplast uses vesicles while the symplast relies on diffusion.
The apoplast is the network of interconnected plasmodesmata, while the symplast refers to the cell walls and intercellular spaces.
The apoplast and symplast are both located within the cell cytoplasm, but the apoplast is specifically associated with the endoplasmic reticulum.
Why is active transport considered important?
    Because material is transported from higher concentration to lower concentration
Because material is transported from lower concentration to higher concentration
    Because it increases diffusion coefficient
Because it does not use ATP
