Question

a pair of leaves arranged in one plane​

Answer 1

Answer:

Alternate phyllotaxy is an arrangement of pair of leaves at each node arranged in one plane

Explanation:

Phyllotaxy is defined as disposition of leaves in the plant. They are of different types according to the presence of leaves in the flower. Some of the known phyllotaxy are cyclic phyllotaxy, opposite phyllotaxy, verticillate phyllotaxy, alternate phyllotaxy, 1/3 phyllotaxy, 2/5 phyllotaxy and 3/8 phyllotaxy. If the whorl contains 2 leaves only they will be present in opposite side and if there are 3 leaves present the angle between them will be 120° and if 4 leaves are present angle between them will be 90°. Leaves in the plant are present in these patterns only.

Answer 2

Answer:

Phyllotaxy may be defined as the pattern of attachment or arrangement of leaves on the stem or branch is such that they get appropriate amount of sunlight for photosynthesis. It is of three types; Alternate: here a single leaf arises at each node in alternate manner e.g. mango, China rose.