Question

assignment: unit 10: quiz
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questions ch10.05 question 5 of 10
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1. whip or tongue grafting is accomplished in ______.

a. early summer, while there is still active growth
b. late summer, after buds mature
c. early spring
d. winter, when plants are dormant
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Explanation:

Whip or tongue grafting is a horticultural technique. In horticulture (a subfield of Biology under Natural Science), whip/tongue grafting is typically done in early spring when plants are starting to become active but before active growth, or in winter when dormant? Wait, no—correctly, whip and tongue grafting is commonly performed in winter when plants are dormant (dormant season grafting) or early spring before bud break. Wait, actually, the correct timing for whip or tongue grafting is winter (when dormant) or early spring. But among the options, option d is winter (dormant), option c is early spring. Wait, let's recall: Whip/tongue grafting is often done in late winter or early spring, but when plants are dormant (winter) or just before growth starts (early spring). However, the standard practice: whip and tongue grafting is performed when the scion and rootstock are dormant, which is winter (dormant) or early spring before active growth. But let's check the options. Option d: winter, when dormant. Option c: early spring. Wait, maybe I got it wrong. Wait, actually, whip or tongue grafting is usually done in winter (dormant season) or early spring. But let's confirm: The correct answer is d? Wait no, maybe c? Wait, no—let's think again. Whip and tongue grafting is a method used for deciduous trees, and it's done when the plants are dormant, which is winter (dormant) or early spring before bud break. So between option c (early spring) and d (winter, dormant). Wait, the standard answer for whip/tongue grafting timing: it's typically done in winter (when dormant) or early spring. But let's check the options. Option d says winter, when dormant. Option c is early spring. Wait, maybe the correct answer is d? Wait, no, maybe I'm mixing up. Wait, actually, whip and tongue grafting is performed in the dormant season, which is winter (for temperate climates, when plants are dormant) or early spring before growth starts. So the correct option is d? Wait, no, let's check references. Whip or tongue grafting is usually done in late winter or early spring, but when the plant is dormant (winter) or just before active growth (early spring). But the options: a is early summer (active growth, wrong), b is late summer (buds mature, wrong), c is early spring, d is winter (dormant). So which is correct? Actually, the correct timing for whip and tongue grafting is winter (dormant) or early spring. But according to horticultural practices, whip/tongue grafting is commonly done in winter (dormant) because the scion and rootstock are dormant, making it easier to handle and the graft heals well. So the correct option is d: winter, when plants are dormant. Wait, but some sources say early spring. Wait, maybe the answer is d. So the correct option is d.

Answer:

d. winter, when plants are dormant