Biodiversity, endemism and diversity indices: แบบฝึกหัด

Which inorganic ion is essential for the synthesis of chlorophyll in plants, and often results in yellowing of leaves (chlorosis) if deficient?

A population of flowers has two alleles for color: R (red) and r (white). If the frequency of the homozygous recessive genotype (white) is \(0.09\), what is the frequency of the dominant allele (R), assuming Hardy-Weinberg equilibrium?

Which structural feature of xylem vessels allows them to provide support to the plant stem while remaining flexible enough for growth?

Define the term endemism in the context of biodiversity.

Explain why nitrate ions are essential for healthy plant growth.

A population contains 40 individuals. If 12 of these individuals are heterozygotes at a specific gene locus, calculate the heterozygosity index \( (H) \).