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

Which of the following is/are not an adaptation of fishes?

  1. Streamlined body

  2. Fins

  3. Very light and hollow bones

  4. Special coverings like scales, waxy coatings etc.

  5. Gills

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct option as this is not an adaptation of fishes. Fishes do not have very light and hollow bones.

Multiple choice

Match the following:

 
a. Aquatic animals 1. They are the organisms that live in water. Example: Fish
b. Amphibious animals 2. They are the organisms that live on trees. Example: Monkey
c. Arboreal animals 3. They are the organisms that live both on land and in water. Example: Frog

  1. a - 1, b - 2, c - 3

  2. a - 1, b - 3, c - 2

  3. a - 3, b - 1, c - 2

  4. a - 3, b - 2, c - 1

  5. a - 2, b - 3, c - 1
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is the correct option. Aquatic animals are the organisms that live in water. Example: Fish. Amphibious animals are the organisms that live both on land and in water. Example: Frog. Arboreal animals are the organisms that live on trees. Example: Monkey

Multiple choice

Which one of the following is called a horned toad?

  1. Alytes

  2. Rhacophorus

  3. Phrynosoma

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

Phrynosoma is the genus commonly known as horned toads or horned lizards due to their flattened, toad-like bodies and prominent head spines. The other options refer to various frog genera.

Multiple choice

Corals are

  1. Plants

  2. Animals

  3. Rocks

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

Corals are marine invertebrates that live in compact colonies. They are animals, not plants or rocks.

Multiple choice

The fish used for biological control of malaria is

  1. Gambusia

  2. Labeo rohita

  3. Gold fish

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

 Gambusia are also known as mosquitofish, which, however, refers more specifically to two species, G. affinis and G. holbrooki. These can be introduced into ponds to eat mosquito larvae and used for biological control of malaria.