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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.

Definitions:

Operationalize

The process of defining a concept so that it can be measured or expressed quantitatively or qualitatively in research.

Psychosexual Stages

A series of stages proposed by Freud through which a child's personality develops, each characterized by a focus on erogenous zones.

Freud's Theories

A set of psychoanalytic concepts developed by Sigmund Freud that attempt to explain the human psyche, including the id, ego, and superego, along with the stages of psychosexual development.

Empirically

Refers to knowledge or information gained through observation, experience, or experiment rather than through theory or pure logic.