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question 43

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Use the information to answer the following question.
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, a source of high-quality timber, and 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 then enter and allow the remaining seeds to germinate.
Animals that consume Brazil nuts derive nutrition mostly from tissue whose nuclei have how many chromosomes?

Definitions:

Myopia

A vision condition where close objects appear clear but distant objects are blurry, due to the eye's shape causing light rays to focus in front of the retina.

Accommodation

The process by which the eye changes optical power to focus on an object at different distances, primarily by altering the curvature of the lens.

Hyperopic

Pertaining to farsightedness, a condition where distant objects are seen more clearly than close ones due to the light rays focusing behind the retina.

Astigmatism

A common vision condition caused by an irregularly shaped cornea, resulting in blurred or distorted vision.