Ans: (A)
Question: When do platyhelminthes reproductive organs develop?
Options:
- (A) when they become adults
- (B) It helps them survive
- (C) produce offspring
- (D) By wind and rain
- (E) during the day
- (F) members of their own species
- (G) an area swollen with pus
- (H) Something coming from a gland
CoT: Adult worms go through a major transformation to develop reproductive organs. Marine flatworms belong to a major group of worms called the Platyhelminthes. Adult platyhelminthes go through a major transformation to develop reproductive organs.


Ans: (D)
Question: What body part would be attached to the external framework?
Options:
- (A) heart
- (B) insects
- (C) respiratory system
- (D) wings
- (E) humans
- (F) Tail
- (G) fat
- (H) digestive system
CoT: Wings are part of the exoskeleton and attached to the thorax. An exoskeleton is an external framework. Wings are part of the external framework.


Ans: (B)

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Question: Hermatypic organisms provide what to many ocean organisms?
Options:
- (A) survival
- (B) food and shelter
- (C) competition
- (D) kinetic energy
- (E) produce light
- (F) important habitats
- (G) protect them
- (H) major threat to health
CoT: Coral reefs provide food and shelter to many ocean organisms. Reef-building corals are hermatypic. Hermatypic organisms provide food and shelter to many ocean organisms.