According to the Table and the Figure Associated with This

question 17

Multiple Choice

According to the table and the figure associated with this question, which enzyme is defective in the strain with the arg2 mutation?

• A) the enzyme that converts the precursor to ornithine
• B) the enzyme that converts ornithine to citrulline
• C) the enzyme that converts citrulline to arginine
• D) the enzyme that converts the precursor to citrulline

Describe the impact of various stressors (drought, salinity, temperature extremes) on plant growth and survival.

Explain the significance of structural features like aerenchyma and pneumatophores in plant adaptations.

Understand how plants regulate membrane fluidity in response to temperature changes.

Recognise the role of secondary metabolites and heavy metals in plant defense mechanisms.