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

question 30

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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.
Orchid bees are to Brazil nut trees as ________ are to pine trees.

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Critical Thinking

The objective analysis and evaluation of an issue in order to form a judgment, often involving skepticism and questioning of presented facts.

Psychiatrists

Medical doctors specialized in diagnosing, treating, and preventing mental, emotional, and behavioral disorders.

Biological Causes

Factors related to the physical body, genetics, or biochemistry that can influence an individual's health or behavior.

PsyD

Doctor of Psychology; a professional doctoral degree intended to prepare graduates for practice in psychology.