The Brazil Nut Tree, Bertholletia Excels, Is Native to Tropical

question 39

Multiple Choice

The Brazil nut tree, Bertholletia excels, is native to tropical rain forests of South America. 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 into which moisture can then enter and allow the remaining seeds to germinate. The agouti is most directly involved in dispersal of which of the following structures?

• A) female gametophytes
• B) sporophyte embryos
• C) sporophyte megaspores
• D) female gametes

---

Definitions:

Reciprocity Norms

Social norms that dictate individuals should return benefits for benefits received, fostering cooperation and social exchange.

Human Cultures

The shared customs, arts, social institutions, achievements, and beliefs of groups of people.

Agrarian

Pertaining to agriculture or the cultivation of land, often used to describe societies primarily focused on farming.

Pay It Forward

The act of repaying the benefits one has received by providing benefits to others, rather than to the original benefactor.