Cation Assimilation Quiz

What is the charge of a cation?

• Negative

• Positive

• Neutral

• Variable

What type of bonds do cations form with organic compounds?

• Covalent bonds

• Hydrogen bonds

• Ionic bonds

• Noncovalent bonds

Which ion is absorbed in exchange for H+ ions?

• NO3-

• K+

• Mg2+

• Ca2+

What is the primary mechanism for nutrient absorption in plants?

• Diffusion

• Passive transport

• All of the above

• Active transport

What do ZIP transporters facilitate the uptake of?

• Trivalent metals

• Divalent metals

• Organic compounds

• Monovalent metals

What is the role of biochar in soil?

• Improve nutrient retention

• Decrease microbial activity

• Increase soil acidity

• Reduce soil temperature

Which nutrient deficiency symptoms appear on older leaves?

• Boron

• Calcium

• Nitrogen

• Iron

What is the effect of excess zinc on iron absorption?

• Enhances absorption

• Inhibits absorption

• No effect

• Increases soil pH

What type of protein allows the flow of molecules through an open channel?

• Receptor protein

• Transport protein

• Carrier protein

• Enzyme