The question asks for the average weight of a sea turtle hatchling. This is a factual recall question related to biology and environmental science, often covered in general knowledge sections of competitive exams. We need to identify the typical weight range for newly hatched sea turtles.
Correct Option: C) 20 grams
The question asks about the common dangers faced by hatchlings (likely referring to sea turtle hatchlings, given the context of reaching the sea) before they can reach the safety of the ocean. This requires knowledge of the natural challenges these young animals encounter.
Correct Option: C) They are caught by birds or crabs. This is a well-documented and significant threat to hatchlings, particularly sea turtle hatchlings, during their journey from the nest to the sea.
The question asks about the survival rate of sea turtle hatchlings to adulthood. This is a common fact related to the life cycle and conservation challenges of sea turtles. We need to recall the approximate survival statistics for sea turtle hatchlings.
Correct Option: B) 1 in 1000
The question asks about the biological reason behind sea turtles laying a large number of eggs. This is a common reproductive strategy in many species, especially those with high infant mortality rates. Understanding the challenges faced by sea turtle hatchlings helps in determining the purpose of this strategy.
Correct Option: C) To increase survival chances
The question asks about the nesting behavior of female sea turtles. This is a well-known biological phenomenon related to their life cycle and instinctual navigation.
B) Same beach they were born. This is the correct answer due to the phenomenon of natal homing, where female sea turtles instinctively return to their birth beaches to lay eggs.
This question tests basic biological classification. To answer correctly, one needs to know the defining characteristics of different animal classes (amphibians, mammals, reptiles, fish) and apply them to sea turtles.
Correct Option: C) Reptile