Correct option is B
The correct answer is (b) Flame cells.
- Flame cells are specialized cells in platyhelminthes (flatworms) that play a crucial role in osmoregulation, which is the process of maintaining the balance of water and salts in the body.
- These cells are part of the excretory system and function by filtering waste materials and excess water from the body fluids, helping to regulate osmotic pressure.
- Function:Help in osmoregulation and excretion by filtering out excess water and waste.
- Structure:They have a tuft of cilia that resembles a flickering flame, hence the name.
- Location:Found in the excretory system of flatworms like planarians
Information Booster:
Nerve Cells:
- Structure: Composed of a cell body, dendrites, and an axon.
- Types: Sensory neurons (carry signals to the brain), motor neurons (send signals from the brain to muscles), and interneurons (connect neurons within the brain and spinal cord).
- Role in Flatworms: Coordinate movement and response to environmental stimuli.
Ganglia:
- Location: Found in the anterior part of flatworms, functioning as a simple brain.
- Function: Process sensory information and control motor functions.
- Significance: Allows flatworms to exhibit basic behaviors like movement and feeding.
Hooks:
- Presence: Found in parasitic flatworms, especially cestodes (tapeworms).
- Function: Aid in attaching to the host’s intestinal wall.
- Adaptation: Evolved as a key feature for parasitism, ensuring the worm remains attached and can absorb nutrients from the host.