Multiple Choice
Which statement best describes the role of flowers in plant survival?
7
views
36. Plant Reproduction
Flowers
Struggling with General Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
The ABC model of flower formation suggests that __________.
A
flower development depends on a sequence of three genes turning on in the correct order
B
the A gene turns on sepals, the B gene turns on petals, the C gene turns on stamens, and all three are necessary for carpels to form
C
the A gene initiates the flower bud, the B gene initiates formation of the sterile parts, and the C gene initiates formation of the reproductive parts
D
three mutations must occur at the shoot apical meristem for it to begin forming flower parts instead of leaves
E
pairs of genes are required to form petals and stamens but a single gene can initiate sepals or carpels
Verified step by step guidance1
Understand the ABC model of flower development, which explains how different combinations of gene activities lead to the formation of the four types of floral organs: sepals, petals, stamens, and carpels.
Recognize that the ABC model involves three classes of genes: A, B, and C. Each class of genes is responsible for the development of specific floral organs.
Identify that the A gene alone is responsible for the formation of sepals, while the C gene alone is responsible for the formation of carpels.
Note that the combination of A and B genes is required for the formation of petals, and the combination of B and C genes is necessary for the formation of stamens.
Conclude that the correct interpretation of the ABC model is that pairs of genes (A+B and B+C) are required to form petals and stamens, respectively, while a single gene (A or C) can initiate sepals or carpels.
5:18mWatch next
Master Alteration of Generations with a bite sized video explanation from Jason
Start learningRelated Videos
Related Practice
