NEET Botany Mineral Nutrition MCQs

A scientist is studying the role of micronutrients in plant growth. They observe that a particular plant species exhibits stunted growth and interveinal chlorosis in young leaves. Which micronutrient deficiency is MOST likely responsible for these symptoms?

A researcher observes that a plant exhibits stunted growth, delayed flowering, and reduced pollen viability. Further analysis reveals a deficiency in a specific micronutrient that plays a role in pollen germination and cell division. Which micronutrient is MOST likely deficient?

Which of the following combinations correctly matches the ion, its role in plants, and a typical mechanism of its uptake?

(A) Calcium - Cell wall component - Symport with protons

(B) Potassium - Stomatal regulation - Channel proteins

(C) Nitrate - Nucleic acid synthesis - Active transport through ATPases

(D) Magnesium - Chlorophyll constituent - Passive diffusion

The Nernst equation can be used to predict the membrane potential if a membrane is permeable to a single ion. If the external concentration of $K^+$ is 10 mM and the internal concentration is 100 mM at 25°C, calculate the Nernst potential for $K^+$. (R = 8.314 J/mol·K, F = 96485 C/mol)

Certain halophytes can tolerate high salinity by accumulating ions like $Na^+$ and $Cl^-$ in their vacuoles. Which membrane transport protein is MOST directly involved in this process?

A patient presents with severe muscle weakness, difficulty walking, and loss of tendon reflexes. Further investigation reveals impaired glucose metabolism and cardiac abnormalities. These symptoms are MOST likely associated with a deficiency of:

A plant exhibits interveinal chlorosis in its young leaves, while older leaves remain relatively unaffected. This symptom is indicative of a deficiency in which micronutrient that is relatively immobile within the plant?

A patient experiences impaired dark adaptation, frequent infections, and dry skin. Which fat-soluble vitamin deficiency is MOST likely responsible?

A mutation in a legume plant prevents the formation of infection threads during rhizobial symbiosis. Which of the following processes would be MOST directly affected?

A researcher isolates a mutant strain of Rhizobium that is unable to synthesize leghemoglobin. Which of the following is the MOST LIKELY consequence of this mutation on nitrogen fixation?