Food preparation YamStudy pool, section Y2C

Subelement Y2

YAM CULTIVATION

Section Y2C

Growth cycle and development

Y2C01

What is the typical length of the growth cycle for most cultivated yam species?

A.
30-60 days
B.
60-90 days
Correct Answer
C.
8-11 months
D.
2-3 years

Y2C01

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Y2C02

What is the first visible stage of yam development after planting setts?

Correct Answer
A.
Sprouting and emergence of vines
B.
Flowering
C.
Tuber formation
D.
Seed production

Y2C02

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Y2C03

During what stage of growth do yams begin significant tuber enlargement?

A.
Immediately after planting
Correct Answer
B.
After vine establishment, typically 2-3 months after planting
C.
Only after flowering is complete
D.
During the last week before harvest

Y2C03

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Y2C04

What environmental factor most strongly triggers tuber initiation in yams?

A.
High nitrogen levels
B.
High phosphorus levels
C.
High temperatures
Correct Answer
D.
Photoperiod (day length)

Y2C04

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Y2C05

What happens to yam vines toward the end of the growth cycle?

A.
They produce edible fruits
B.
They transform into new tubers
Correct Answer
C.
They senesce and die back
D.
They detach and form new plants

Y2C05

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Y2C06

What is the relationship between vine growth and tuber development in yams?

Correct Answer
A.
Healthy vine growth is necessary before significant tuber bulking occurs
B.
Vines and tubers grow at exactly the same rate
C.
Vines grow only after tubers are fully formed
D.
Vine growth and tuber growth are completely independent

Y2C06

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Y2C07

What growth characteristic of yam vines requires management in cultivation?

A.
Their tendency to grow underground
Correct Answer
B.
Their climbing nature and need for support
C.
Their poisonous thorns
D.
Their inability to grow more than 30 cm tall

Y2C07

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Y2C08

Which statement best describes yam root system development?

A.
Yams develop only a single tap root
B.
Yams have no roots, only tubers
C.
Yam roots grow only from the tuber surface
Correct Answer
D.
Yams develop adventitious roots from the planted sett and from nodes on new stems

Y2C08

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Y2C09

What physiological process marks the transition from vegetative growth to storage organ development in yams?

Correct Answer
A.
Photoassimilate partitioning shift from vines to tubers
B.
Complete cessation of leaf growth
C.
Development of flowers
D.
Color change in the leaves from green to red

Y2C09

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