AP BIOLOGY

PLANTS

CLASSIFICATION OF PLANTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Phenotypic Plasticity
A
large strengthened vein on the midline of a leaf
B
plants develop adaptive phenotypic characteristics due to changes in theenvironment
C
thin layer of delicate tissue separating the xylem and phloem which inducessecondary growth
Explanation: 

Detailed explanation-1: -Many organisms have the ability to express different phenotypes in response to environmental conditions. Such phenotypic plasticity allows individual organisms to develop appropriate morphological, physiological, or behavioral traits that better fit a particular environment that they encounter.

Detailed explanation-2: -Phenotypic plasticity is the ability of an individual organism to alter its physiology/morphology in response to changes in environmental conditions. This ability is particularly important in plants, whose sessile life-style requires them to deal with ambient conditions.

Detailed explanation-3: -Local adaptation involves genetic differentiation specific to each environment, whereas phenotypic plasticity allows single genotypes to express different phenotypes under diverse environmental conditions.

Detailed explanation-4: -Environmental changes can affect phenotypic expression at different stages of the life cycle, so that the effects of global change can be mediated not only by current cues, but also by transgenerational, early-life and carry-over effects (figure 1).

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