Pollution Transport in Plants

What are the two basic strategies proposed by Baker (1981) for higher plants to tolerate large numbers of metals in their environment?

• Exclusion and Accumulator

• Absorption and Excretion

• Filtration and Accumulation

• Translocation and Storage

How does metal uptake by plants in dry soil get influenced?

• By the type of soil

• By the amount of water

• By the temperature

• By the light exposure

What is the effect of waterlog-condition on soil redox potential?

• It increases the availability of metals

• It decreases the availability of metals

• It has no effect on metal availability

• It only affects Fe availability

What is the role of Hydrogen ATPase in mineral absorption?

• It releases H+ into the soil

• It absorbs minerals from the soil

• It transports water to the roots

• It facilitates photosynthesis

What are the main types of plant tissues?

• Dermal, Vascular, Ground

• Epidermal, Vascular, Parenchyma

• Xylem, Phloem, Sclerenchyma

• Root, Stem, Leaf

What is the function of root hairs in plants?

• Increase surface area for water absorption

• Store food

• Transport nutrients

• Protect the root

What is the difference between dicot and monocot roots?

• Dicots have a tap root system, monocots have fibrous roots

• Monocots have a tap root system, dicots have fibrous roots

• Both have the same root system

• Dicots have deeper roots than monocots

What is the role of tracheids and vessel elements in plants?

• Water conduction

• Food storage

• Photosynthesis

• Protection

What is facilitated diffusion in the context of mineral transport?

• Movement of ions from soil to roots through carrier proteins

• Active transport of minerals against concentration gradient

• Osmosis of water into root cells

• Passive movement of water through xylem

What happens during ion exchange in plant roots?

• Ions at the surface of soil particles oscillate and exchange

• Ions are absorbed without any exchange

• Only cations are exchanged

• Anions cannot be exchanged