Marine Biology -Multiple Choice Questions Quiz

Interactive MCQs on “Marine Biology”:

Solve the following 10 questions. Only one option is correct. Click on the “Submit” button when done. Click on the “embed” button to use this quiz on your website. Click on “WhatsApp” to share this quiz.

Question 1:What is the primary source of energy for marine ecosystems?

(A) Heat from volcanic activity
(B) The ocean currents
(C) The sun
(D) Deep-sea vents

Question 2:Which of the following organisms is a primary producer in marine ecosystems?

(A) Shark
(B) Phytoplankton
(C) Jellyfish
(D) Squid

Question 3: What is the marine food chain primarily based on?

(A) Sunlight
(B) Carbon dioxide
(C) Oxygen
(D) Phytoplankton

Question 4:What is the function of coral reefs in marine ecosystems?

(A) They provide food for large fish
(B) They act as habitats for many species
(C) They increase ocean acidity
(D) They help in the movement of ocean currents

Question 5:Which of the following is an example of a filter feeder in marine environments?

(A) Shark
(B) Jellyfish
(C) Clams
(D) Tuna

Question 6:What is the main reason mangrove forests are important for marine ecosystems?

(A) They regulate ocean currents
(B) They help in water desalination
(C) They are the main source of food
(D) They protect coastlines and support marine life

Question 7:Which of the following is an example of a keystone species in marine ecosystems?

(A) Whale
(B) Sea otter
(C) Shark
(D) Dolphin

Question 8:What is ocean acidification, and how does it impact marine life?

(A) Increase in salinity
(B) Rise in sea levels
(C) Lowering of pH affecting marine organisms
(D) Loss of marine biodiversity

Question 9:Which marine zone is characterized by the deepest part of the ocean?

(A) Epipelagic zone
(B) Mesopelagic zone
(C) Abyssal zone
(D) Benthic zone

Question 10:How do whales contribute to the health of marine ecosystems?

(A) By producing oxygen
(B) By increasing water temperature
(C) By circulating nutrients for plankton growth
(D) By filtering water