The Brazil Nut Tree, Bertholletia Excels (N = 17), Is

question 11

Multiple Choice

The Brazil nut tree, Bertholletia excels (n = 17) , is native to tropical rain forests of South America. It is a hardwood tree that can grow to over 50 metres tall, is a source of high-quality timber, and is a favourite nesting site for harpy eagles. As the rainy season ends, tough-walled fruits, each containing 8-25 seeds (Brazil nuts) , fall to the forest floor. Brazil nuts are composed primarily of endosperm. About $50 million worth of nuts are harvested each year. Scientists have discovered that the pale yellow flowers of Brazil nut trees cannot fertilise themselves and admit only female orchid bees as pollinators. The agouti (Dasyprocta spp.) , a cat-sized rodent, is the only animal with teeth strong enough to crack the hard wall of Brazil nut fruits. It typically eats some of the seeds, buries others, and leaves still others inside the fruit, which moisture can now enter. The uneaten seeds may subsequently germinate.
Animals that consume Brazil nuts derive nutrition mostly from tissue whose nuclei have how many chromosomes?

• A) 17
• B) 34
• C) 51
• D) 68

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Definitions:

Universal Approach

An approach to prevention programs designed to include all individuals in a certain geographical area (for example, the neighbourhood, the city, the province) or a certain setting (for example, school, the workplace, a public housing complex).

Promotion/Prevention Programs

Initiatives designed to enhance positive health behaviors and outcomes (promotion) while reducing the risk or impact of negative health conditions or behaviors (prevention).

Better Beginnings Program

A community-based early intervention program designed to support children's health, development, and well-being from a young age.

Cumulative Risk

The summation of a person’s risk for a disorder or disease up to a specified age.