Food preparation YamStudy pool, section Y7C

Subelement Y7

YAM SCIENCE

Section Y7C

Genetic diversity and improvement

Y7C01

Which of the following best describes the genetic diversity of cultivated yams?

A.
All cultivated yams are genetically identical
B.
Only three genetic varieties exist worldwide
C.
Genetic diversity exists only in laboratory specimens
Correct Answer
D.
Significant genetic diversity exists across species and landraces

Y7C01

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Y7C02

What breeding challenge is common in yam improvement programs?

Correct Answer
A.
Irregular flowering and low seed production
B.
Excessive mutation rates
C.
Complete inability to store genetic material
D.
Seedlings that never develop tubers

Y7C02

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Y7C03

Which technique has been used to preserve yam genetic resources?

A.
Permanent freezing of entire plants
Correct Answer
B.
In-vitro conservation and germplasm banks
C.
Conversion to synthetic DNA only
D.
Encoding genetic sequences into music

Y7C03

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Y7C04

What trait has been a primary focus of yam breeding programs?

A.
Ability to grow in desert conditions
B.
Ability to grow without soil
Correct Answer
C.
Disease resistance, particularly to viruses
D.
Production of square-shaped tubers

Y7C04

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Y7C05

What molecular technology has accelerated yam breeding programs?

Correct Answer
A.
Marker-assisted selection
B.
Teleportation
C.
Sonic enhancement
D.
Crystallography

Y7C05

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Y7C06

Why is traditional yam breeding more challenging than breeding for many other crops?

A.
Yams cannot be grown in controlled environments
B.
Yams have no genetic material
C.
Yam genetics follow different biological laws
Correct Answer
D.
Long growing cycle and low multiplication rate

Y7C06

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Y7C07

Which characteristic of many cultivated yam varieties complicates genetic improvement?

A.
Excessive mutation rates
Correct Answer
B.
Polyploidy (multiple sets of chromosomes)
C.
Microscopic size
D.
Ability to hypnotize researchers

Y7C07

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Y7C08

What conservation approach has been used to maintain traditional yam landraces?

A.
Converting all specimens to digital format
B.
Replacing them all with modern varieties
Correct Answer
C.
On-farm conservation by traditional farmers
D.
Permanent cryogenic freezing

Y7C08

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