Question:
Brachiolaria is the larval stage of
Brachiolaria is the larval stage of
Show Hint
Keep larval stages of echinoderms memorized:
- Starfish = Bipinnaria and Brachiolaria.
- Sea Cucumber = Auricularia.
- Sea Urchin = Pluteus (Echinopluteus).
- Starfish = Bipinnaria and Brachiolaria.
- Sea Cucumber = Auricularia.
- Sea Urchin = Pluteus (Echinopluteus).
Updated On: Aug 20, 2026
- Sea cucumber
- Starfish
- Sea anemone
- Hermit crab
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Marine invertebrates, particularly echinoderms, have complex lifecycles featuring distinct, free-swimming ciliated larval stages.
Step 2: Detailed Explanation:
In the life cycle of a starfish (class Asteroidea):
- The fertilized egg develops first into a ciliated, bilaterally symmetrical bipinnaria larva.
- The bipinnaria then grows specialized adhesive arms/structures, transforming into the brachiolaria larva.
- The brachiolaria eventually settles on the substrate, attaches via its adhesive disk, and metamorphoses into a pentaradially symmetrical juvenile starfish.
Step 3: Final Answer:
Brachiolaria is the larval stage of the starfish, corresponding to option (B).
Marine invertebrates, particularly echinoderms, have complex lifecycles featuring distinct, free-swimming ciliated larval stages.
Step 2: Detailed Explanation:
In the life cycle of a starfish (class Asteroidea):
- The fertilized egg develops first into a ciliated, bilaterally symmetrical bipinnaria larva.
- The bipinnaria then grows specialized adhesive arms/structures, transforming into the brachiolaria larva.
- The brachiolaria eventually settles on the substrate, attaches via its adhesive disk, and metamorphoses into a pentaradially symmetrical juvenile starfish.
Step 3: Final Answer:
Brachiolaria is the larval stage of the starfish, corresponding to option (B).
Was this answer helpful?
0
0
Top ICAR AIEEA Fisheries Science Questions
- How does climate variability influence biological productivity and fisheries sustainability?
- The density of seawater at $4^{\circ}\text{C}$ is}
- How does phytoplankton biomass impact fisheries productivity?
- What role do bio-indicators play in assessing aquatic pollution levels?
- How does water pH influence fish physiology and ecology?
View More Questions
Top ICAR AIEEA Fish Taxonomy Questions
- Nauxim bay is famous for the fishery of
- Type of caudal fin present in classes Dipnoi and Holocephali is
- Given below are two statements:
Statement (I): Rhodeus deposits eggs on the mantle cavity of freshwater mussel
Statement (II): Careproctus deposits eggs beneath the carapace of crabs
In light of the above statements, choose the most appropriate answer from the options given below. - Given below are two statements:
Statement (I): In fish, prolactin increases glomerular filtration rate in the kidney
Statement (II): In fish, prolactin functions predominately in freshwater osmoregulation
In light of the above statements, choose the most appropriate answer from the options given below. - Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A): Freshwater fishes produce a large amount of diluted urine
Reason (R): Skin has low permeability to the water and salt ions
In light of the above statements, choose the correct answer from the options given below.
View More Questions
Top ICAR AIEEA Questions
- Which of the following statements is false?
- Which of the following is an example of an inventory?
- According to Adam Smith, productivity gains could be brought about through .
- The supply curve for an artificially scarce good is .
- Which of the following would not be considered an opportunity cost of paid employment?
View More Questions