Biology · General Awareness

Aquatic and Marine Biology

1,905 Questions

This hub covers key concepts in aquatic and marine biology, including fish anatomy, marine animal behavior, and commercial fisheries. These topics are essential for general science sections in various competitive exams. Use these resources to test your knowledge of diverse aquatic ecosystems.

Marine animal adaptationsCommercial fisheriesFish anatomyAquatic ecosystems

Aquatic and Marine Biology Questions

Multiple choice

Silver fish belongs to the phylum

  1. Pisces

  2. Arthropoda

  3. Mollusca

  4. Echinodermata
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A silverfish (Lepisma saccharina) is a small, wingless insect. It is an arthropod. 

Multiple choice

Which of the following animals undergo the process of metamorphosis?

  1. Frogs

  2. Snake

  3. Rat

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Metamorphosis is a biological process by which an animal physically develops, after birth or hatching, involving a conspicuous and relatively abrupt change in the animal's body structure through cell growth and differentiation. Some insects, fishes, amphibians, molluscs, crustaceans, cnidarians, echinoderms and tunicates undergo metamorphosis, which is usually accompanied by a change of habitat or behavior.

Multiple choice

Heart of a fish is special because

  1. it has no blood at all

  2. it has arterial blood only

  3. it has venous blood only

  4. it has partly arterial and partly venous blood
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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Multiple choice

For what purpose are oysters cultivated?

  1. <font face="Arial" size="2">For their </font>shells

  2. <font face="Arial" size="2">For their </font>oil

  3. <font face="Arial" size="2">For their </font>pearls

  4. <font face="Arial" size="2">For their </font>teeth
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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