Animal Transport
In this circulatory system, low pressure limits rapid transport because fluid is not confined to vessels.
Open circulatory systems
This vascular tissue responsible for transporting water and dissolved minerals from roots to leaves.
Xylem
These are the three stages of signal processing in plants.
reception, transduction, and response
This type of responds slowly to primary infections but elicits rapid responses during subsequent infections.
Adaptive immunity
This describes the process of shoot growth towards the light.
Phototropism
This type of vessel causes a dramatic drop in blood velocity and is optimized for diffusion rather than transport.
Capillaries
This is the process by which water evaporates from plant leaves through microscopic openings.
Transpiration
This is light-triggered developmental change causing greening
de-etiolation
This signaling molecule increases vascular permeability, allowing immune cells and proteins to access infected tissues.
Histamine
This is the physiological response of plants to day length.
Photoperiodism
This protein enables red blood cells to transport oxygen efficiently due to cooperative binding.
Hemoglobin
This term describes the movement of large amounts of water through xylem driven by pressure differences rather than diffusion.
Bulk flow
This hormone promotes the elongation of shoots.
Auxin
In insects, these immune cells combine phagocytosis, secretion of antimicrobial peptides, and encapsulation of large parasites.
Hemocytes
These are dense cellular structures found free floating in plant cells that help plant organs respond to gravity.
Statoliths
An animal species relies on this type of circulatory system where blood is confined to vessels but pressure is not maintained after gas exchange, limiting targeted delivery to tissues and constraining metabolic activity.
single circulation
This property of water allows pulling forces at the leaf surface to be transmitted down the xylem column.
Cohesion
In de‑etiolation, this type of receptor detects light and initiates a signaling cascade that changes gene expression.
Phytochrome
his system of plasma proteins amplifies immune responses through a cascade that results in pathogen lysis and opsonization.
Complement system
This is a change in growth that is caused by mechanical stimulation.
Thigmomorphogenesis
This system is found in insects and supplies oxygen to body cells
tracheal system
This trade‑off occurs when plants close stomata, balancing water conservation against reduced gas exchange.
The trade‑off between transpiration and photosynthesis
This hormone is involved in the plant response to drought and dormancy.
Abscisic acid
These are the three main components of the innate immune system.
physical barriers, chemical barriers, cellular responses
This is a physiological response to day length.
Photoperiodism