Aquatic and Marine Biology

Seahorses are indeed among the slowest-swimming fish. They are poor swimmers that rely on their prehensile tails to grip onto sea grasses and coral, drifting with ocean currents rather than actively swimming. Their small dorsal fin beats at about 35-70 times per second but propels them very slowly.

The sailfish is widely considered the fastest fish, capable of swimming speeds up to 110 km/h (68 mph). Their streamlined bodies and large dorsal fins (sails) make them exceptionally fast swimmers in short bursts. The barracuda is also fast but not as fast as the sailfish.

Jaragua Sphaero (dwarf gecko) and Virgin Gorda Least Gecko are among the smallest reptiles, both measuring about 16mm. Both are correct answers.

Escargots is a French dish that consists of cooked snails (not raw). The snails are typically prepared with garlic butter, herbs, and served in their shells. While the question says raw, the dish is actually cooked.

Ichthyophobia is the correct term for fear of fish, derived from Greek 'ichthys' meaning fish. The distractors are: Myrmecophobia (ants), Galeophobia (sharks - can also mean fish but less specific), Ophidiophobia (snakes).

Shark corneas are remarkably similar to human corneas in structure and refractive properties, making them useful for transplantation research. Other marine mammals like dolphins, whales, and seals have different corneal adaptations.

Dolphins have a permanently curved jawline that gives them a natural smiling appearance, which is why they are often described as always smiling. This is an anatomical feature, not an emotional expression. Fish (A) do not have this feature, and crocodiles (C) have quite different jaw structures.

The Dead Sea has a salt content of approximately 34%, making it nearly 10 times saltier than ocean water. This extreme salinity creates an environment where fish and most aquatic life cannot survive.

An octopus has three hearts - two branchial hearts that pump blood through the gills, and one systemic heart that pumps blood to the rest of the body. This is a unique feature of their circulatory system.

The TCS Siruseri campus in Chennai has a distinctive butterfly-shaped architecture. This unique design is visible in aerial views and is a notable feature of the IT park. The other shapes (spider, dinosaur, fish) are not associated with this campus layout.

Fish do have blood, though it's different from mammalian blood. Fish blood contains red blood cells with hemoglobin, white blood cells, and platelets, though the ratios and some functions differ.

The statement is false because goldfish are NOT the only animals with this visual capability. Many species including bees, birds, reindeer, and some fish can see UV light, while certain snakes and fish can detect infrared. The claimed answer 'False' is correct.

Intrauterine cannibalship (embryonic cannibalism) occurs in sand tiger sharks, not tiger sharks. While the phenomenon described is real for some shark species, attributing it specifically to tiger sharks is incorrect.