_______ is the plant that produces 90% of the world's oxygen.
mollusks
plankton
zoea
Dolphins are classified in the same order as the ________.
seals
whales
sharks
The general group of seahorses is _______.
crustaceans
fish
mammals
Real sea sponge comes under _______.
man-made
plants
animals
What does the term "echino" mean?
sharp
spined
pointy
Few varieties of fish can change the nature of its gender
True
False
The largest structure created by non-human organisms is a type of ________.
coral reef
hydrothermal vent
ant hill
________ has the largest compound eye on the planet.
giant squid
blue whale
sperm whale
The Kraken belongs to the mollusk _______.
gastropod
squidopod
cephalopod
Find the kind of a phytoplankton
lion’s mane jellyfish
sea butterfly
algae
The intertidal zone is the area __________.
Between low and high tide
Beyond the continental shelf
Between the subtidal zone and the continental shelf
A Sea Anemone belongs to _______.
Plankton
Benthos
Nekton
Marine organisms that live in or on the bottom are _________.
Nekton
Plankton
Benthos
The animal that lives within the sediment of the sea bottom is _________.
Aphotic
Infauna
Epifauna
The zone in the ocean with some light but inadequate for photosynthesis
Aphotic zone
Abyssal zone
Photic zone
The type of zooplankton in which the larvae come under
Meroplankton
Holoplankton
Phytoplankton
The zone of an enormous amount of light for photosynthesis ________.
Aphotic zone
Abyssal zone
Photic zone
Benthic animals found in the sea bottom or sitting firmly attached to it are called
Sessile
Epifauna
Infauna
The ocean plankton found in _____ zone.
Pelagic
Abyssal
Bathyal
Which of the following is not an abiotic factor?
Salinity
Predation
Substrate
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