Shoot Architecture And Light Capture Flashcards
True or false,:
Plant grow tall to avoid shading from neighbouring plants
True
What is the primary function of the stem in most tall plants?
Strong mechanical support
Most tall plants have thick stems that provide structural integrity.
What type of growth do woody plants undergo to strengthen their stems?
Secondary growth
This process contributes to the increased thickness and strength of the stem.
How do vines adapt to capture more light?
They rely on other objects to reach higher levels
Vines climb to access light that would otherwise be unavailable.
What is the variation in branching patterns among plants?
Some plants are unbranched while others are well branched
The branching pattern affects light absorption.
How does the branching pattern benefit plants?
Enables maximum light absorption in their ecological niche
Different patterns adapt plants to their specific environments.
Where are the largest leaves typically found?
In plants growing in rain forests
These environments support larger leaf sizes due to high light availability.
What type of leaves are found in species inhabiting dry or very cold environments?
Smallest leaves
Smaller leaves reduce water loss and can withstand harsh conditions.
What is phyllotaxy?
The arrangement of leaves on the stem
This arrangement is crucial for maximizing sunlight capture.
How does phyllotaxy benefit plants?
Helps capture maximum sunlight
Effective leaf arrangement enhances photosynthesis.
What are the possible arrangements of leaves per node?
One leaf, two leaves, or several leaves
Variation in leaf arrangement can optimize space and light capture.
How do horizontally oriented leaves function in low light conditions?
They capture light efficiently
Horizontal orientation maximizes light exposure when light is limited.
What is the purpose of vertically arranged leaves in some plants?
To avoid damage from intense light exposure
Vertical orientation helps in reducing the risk of leaf burn.
What is a characteristic of leaves when they are nearly vertical?
Light rays are parallel to the leaf surfaces
This orientation minimizes direct sunlight impact on the leaf.
