Aquatic Biome

Q.

What is the worlds largest ecosystem?

Q.

What are benthic animals?

Q.

Upper part of sea/aquatic ecosystem contains:

1. Planktons

2. Nektons

3. Both

4. Benthos

Q.

An inverted pyramid of biomass can be found in which ecosystem?

1. Marine
2. Forest
3. Grassland
4. Tundra

Q. The most stable ecosystem is

1. Mountain
2. Forest
3. Desert
4. Ocean

Q. Identify X, Y and Z with respect to freshwater ecosystem.
$\begin{array}{c}\text{X}\\ \text{Annelids}\\ \text{Snails}\end{array}\begin{array}{c}\text{Y}\\ \text{Small fishes}\\ \text{Frogs}\end{array}\begin{array}{c}\text{Z}\\ \text{Large fishes}\\ \text{Crocodiles}\end{array}$

1. X - Primary consumer
   Y - Secondary consumer
   Z - Tertiary consumer
2. X - Secondary consumer
   Y - Primary consumer
   Z - Tertiary consumer
3. X - Primary consumer
   Y - Producers
   Z - Decomposers
4. X - Decomposers
   Y - Producers
   Z - Primary consumer

Q. Explain marine and fresh water ecosystem.

Q. A driver was collecting water samples from a lake .He collected a sample at every interval of 3m, starting at 5m below the water surface .The final sample was collected at a depth of 35m.How many samples did he collect?

Q. How deep in sea, producers are present?

Q.

Eskimos are the people living in the ______.

1. Torrid zone

2. Tropical zone

3. Temperate zone

4. Frigid zone

Q. Which ecosystem does not show variations dependent upon geographic location and rainfall?

1. Marine ecosystem
2. Fresh water ecosystem
3. Desert water ecosystem
4. Tropical ecosystem

Q. Which of the following is not a producer?

1. Small fish
2. Lotus
3. Water Lily
4. Algae

Q. The primary producers of the deep hydrothermal vent ecosystem are

1. Green algae
2. Blue-green algae
3. Coral reefs
4. Chemosynthetic bacteria

Q. Endotherms lose water by warming the ambient air they inhale and humidifying it to core body temperature before exhaling.
These aquatic organisms can control their water loss by controlling their

1. Water intake
2. Water excretion
3. Breathing and respirations
4. Body temperature

Q. After Na, K and Cl, sea water has higher concentration of

1. Zn
2. Ca
3. Pb
4. Mg

Q. Animals living in open sea are

1. Nekton
2. Benthos
3. Plankton
4. Pelagic

Q. _________ can be defined as the natural surroundings in which an organism lives.

1. Atmosphere
2. Habitat
3. House
4. Room

Q. Give examples of animals found in marine habitat.

Q. Define benthic zone

Q. Fishes have adaptations for swimming and taking in oxygen from the air.

1. True
2. False

Q. Which communities are more vulnerable to invasion by outside plants and animals?

1. Tropical evergreen forests
2. Temperate forests
3. Mangroves
4. Oceanic island communities

Q. Counter shading saves the pelagic fishes from their predators like birds.

1. False
2. True

Q. Identify X, Y and Z with respect to freshwater ecosystem.
$\begin{array}{c}\text{X}\\ \text{Annelids}\\ \text{Snails}\end{array}\begin{array}{c}\text{Y}\\ \text{Small fishes}\\ \text{Frogs}\end{array}\begin{array}{c}\text{Z}\\ \text{Large fishes}\\ \text{Crocodiles}\end{array}$

1. X - Secondary consumer
   Y - Primary consumer
   Z - Tertiary consumer
2. X - Primary consumer
   Y - Producers
   Z - Decomposers
3. X - Decomposers
   Y - Producers
   Z - Primary consumer
4. X - Primary consumer
   Y - Secondary consumer
   Z - Tertiary consumer

Q. An aquatic biome that consists of a mixture of fresh and salt water that supports populations of shrimp, crabs, and fish is known as a/an

1. Intertidal zone
2. Estuary
3. Wetland
4. Neritic zone
5. Eutrophic lake

Q. Most fish production in inland water body is through capture fishing.

1. True
2. False

Q. As the Pacific Ocean gets warmer, it absorbs greater concentrations of carbon dioxide and becomes increasingly acidic.
Predict the abiotic or biotic factor that is most directly affected in the ocean by this change.

1. Fish
2. Salinity
3. Plankton
4. Evaporation

Q. Demersal fish is obtained from

1. Lakes
2. Estuaries
3. Open sea
4. Sea bottom

Q. give an example of one inverted and one spindle shaped pyramid.

Q. Animals or organisms floating on the surface of water are known as

1. Plankton
2. Benthon
3. Neritic
4. Pelagic