Anatomy of Grains ABE 421 Quiz
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Questions and Answers

What is the function of the embryo in a rice grain?

Develop into a new plant

How does the embryo of a rice grain respire?

By taking in oxygen in the air

What does the embryo of a rice grain consume for food?

Starch in the grain itself

What happens to the embryo during milling?

<p>It is removed</p> Signup and view all the answers

What is the main composition of the endosperm in a rice grain?

<p>Starch</p> Signup and view all the answers

What is the part of the grain attached to the panicle?

<p>Pedicel</p> Signup and view all the answers

What is the thin fibrous layer of the grain known as?

<p>Pericarp</p> Signup and view all the answers

How many layers does the pericarp consist of?

<p>Three</p> Signup and view all the answers

What is sometimes called the tegmen layer?

<p>Testa</p> Signup and view all the answers

What is removed in the whitening stage during milling?

<p>Bran</p> Signup and view all the answers

What does a higher milling degree of grains indicate?

<p>Greater percentage of bran removed</p> Signup and view all the answers

What is the most visible part of a rough rice grain?

<p>HULL</p> Signup and view all the answers

What can damage processing equipment due to excessive wear and tear of machine parts?

<p>HULL</p> Signup and view all the answers

What part of the grain makes it abrasive and very hard, providing protection against insects, microorganisms, moisture, and gases?

<p>TRICHOMES</p> Signup and view all the answers

Where can Awn be found in the grain?

<p>AT THE UPPER END OF THE HULL SECTIONS (PALEA AND LEMMA)</p> Signup and view all the answers

Why is knowing the anatomy of grain important in postharvest operations?

<p>PREREQUISITE IN GAINING A CLOSER UNDERSTANDING OF WHAT HAPPENS TO THE GRAIN</p> Signup and view all the answers

What makes rice kernels break easily on mechanical impact during physical operations?

<p>ADJUSTMENT OF HULLING MACHINES</p> Signup and view all the answers

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