#1
Which phylum do clams belong to?
Mollusca
ExplanationClams belong to the phylum Mollusca.
#2
What is the main function of the mantle in clams?
Shell formation
ExplanationThe mantle in clams plays a crucial role in the formation of their shells.
#3
What is the function of the digestive gland in clams?
Digestion of food
ExplanationThe digestive gland in clams is involved in the digestion of food.
#4
What type of symmetry do clam shells typically exhibit?
Bilateral symmetry
ExplanationClam shells typically exhibit bilateral symmetry.
#5
What is the primary purpose of the foot in clams?
Locomotion
ExplanationThe foot in clams is primarily used for locomotion.
#6
Which of the following is a characteristic feature of the class Bivalvia?
Presence of two shells
ExplanationThe class Bivalvia is characterized by the presence of two shells.
#7
What type of circulatory system do clams have?
Open circulatory system
ExplanationClams have an open circulatory system for the circulation of fluids.
#8
Which organ do clams use for filter feeding?
Gills
ExplanationClams use their gills for filter feeding, extracting food particles from water.
#9
What is the function of the siphons in clams?
Respiration
ExplanationSiphons in clams serve the function of facilitating respiration.
#10
Which of the following is NOT a characteristic feature of clams?
Presence of radula
ExplanationClams lack the characteristic feature of having a radula.
#11
Which of the following best describes the nervous system of clams?
Decentralized nervous system
ExplanationClams have a decentralized nervous system.
#12
Which structure in clams is responsible for producing gametes?
Gonad
ExplanationGametes in clams are produced by the gonad.
#13
What is the process called where clams exchange gases with the surrounding water?
Respiration
ExplanationThe process where clams exchange gases with water is called respiration.
#14
What is the purpose of the adductor muscles in clams?
Shell closure
ExplanationAdductor muscles in clams are responsible for shell closure.
#15
Which body cavity type do clams have?
Coelom
ExplanationClams have a coelom as their body cavity type.
#16
What is the purpose of the pericardial cavity in clams?
Circulation
ExplanationThe pericardial cavity in clams plays a role in circulation.
#17
What is the purpose of the byssal threads in some species of clams?
Attachment
ExplanationByssal threads in some clams serve the purpose of attachment.
#18
What is the function of the crystalline style in the digestive system of clams?
Digestive enzyme secretion
ExplanationThe crystalline style in clams is involved in the secretion of digestive enzymes.