Multiple choice general knowledge

Snakes that are active in daytime generally have round pupils. What about snakes that come out at night? They have

  1. horizontal pupils.

  2. no pupils.

  3. vertical pupils.

  4. round pupils
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Nocturnal snakes have vertical slit-shaped pupils that can open wider in low light conditions and close to tiny slits in bright daylight, protecting their light-sensitive retinas. Round pupils are typical of diurnal snakes active during the day, while horizontal pupils are extremely rare in snakes.

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