Geography · Environmental Studies

Oceanography and Hydrology

1,673 Questions

Find relevant questions on oceanography and hydrology that address aquatic ecosystems and physical geography. The topics include coastal landforms, coral reefs, ocean salinity, and tidal patterns. These concepts frequently appear in civil services and state level administrative examinations.

Coral reef structuresCoastal landformsOcean salinity patternsGlacial retreat impactsMangrove ecosystems

Oceanography and Hydrology Questions

Multiple choice botany ecosystem : structure and function energy flow in food chain food chain and energy flow energy flow in ecosystem

Organism in estuary can concentrate on conversion of sun energy into;

  1. Food

  2. Organic matters

  3. Nutrients

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

Organisms in an estuary, particularly producers like phytoplankton and algae, convert solar energy into organic matter through photosynthesis. This organic matter forms the base of the estuarine food web.

Multiple choice geography irrigation and power irrigation in india tanks and fisheries source of water

Where will you expect to find bamboo growing?

  1. At a great height from sea level

  2. At a medium height from sea level

  3. At a very low height from sea level

  4. There is no such condition; it can grow anywhere
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bamboo is a type of grass that thrives in various climates, but it is notably found in mountainous regions at significant altitudes. It is well-adapted to high-altitude environments where other vegetation might struggle.

Multiple choice social science oceans and fishing irrigation in india tanks and fisheries irrigation and power

______ in oceans is a more complex activity.

  1. Researching

  2. Diving

  3. Hunting

  4. Fishing
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Fishing in the oceans is typically a very multifaceted action, you can imagine the high concentration hurricane usually present in the ocean, it may be very difficult for the fishermen to cop up the situation, this is because the boats used for fishing may be influenced by the storm to a point of leasing water into the boats and finally making the boats to overturn. 

Fishing is a major activity that can selectively remove a large portion of animal populations and also considerably change tropic connections. Fishing gear that drags the bottom at times, such as bottom-trawls, pots, and loglines, can alter marine habitats, especially benthic or reef habitats. 

Because fish populations change naturally, sometimes by orders of magnitude, separating the effects of fishing from natural and environmental unpredictability is difficult.

Thus, the correct option is D.

Multiple choice botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

Plants like Rhizophora and Avicennia grow on the sea shores under saline conditions. For this they have special roots for respiration which are called

  1. Floating roots

  2. Pneumatophores

  3. Climbing roots

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

Pneumatophores are specialized root structures that grow out from the water surface and facilitate the aeration necessary for root respiration in hydrophytic trees such as many mangrove species (e.g., Avicennia germinans and Laguncularia raecemosa), bald cypresses, and cotton (Tupelo) gum (Nyssa aquatica). So, the correct option is "B" (Pneumatophores).

Multiple choice botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

Green plants are absent in deep sea. Why?

  1. Light is absent

  2. High pressure

  3. Low temperature

  4. Great depth
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Photosynthesis, which is essential for green plants, requires light. In the deep sea, light cannot penetrate, making it impossible for green plants to survive.

Multiple choice botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

Which one of the following is an example of a plant adapted to highly saline coastal conditions?

  1. Sonneratia acida

  2. Anaardium occidentale

  3. Taxus baccata

  4. Gnetum gemon
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sonneratia acida is a mangrove species, which are plants specifically adapted to highly saline, waterlogged coastal environments. The other options are terrestrial plants not adapted to such conditions.

Multiple choice evs when there is a disaster disaster and types disasters forest fire

Tsunami waves are different from the normal sea waves as

  1. They have greater frequency

  2. They have greater wavelength

  3. They have greater temperature

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Tsunami waves are characterized by extremely long wavelengths, often hundreds of kilometers, which allows them to carry massive amounts of energy across the ocean.

Multiple choice evs when there is a disaster disaster and types disasters forest fire

Which of the following attributes can be related to Tsunami waves?

  1. Small amplitude

  2. Long wavelength

  3. Larger amplitude

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Tsunamis are defined by their long wavelengths and, upon reaching shallow water, their significantly larger amplitudes compared to typical ocean waves.

Multiple choice evs when there is a disaster disaster and types disasters forest fire

Which of the following can act as natural barriers to control Tsunami?

  1. Coral Reefs

  2. Mangroves

  3. Both A and B

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • A tsunami or tidal wave, also known as a seismic sea wave, is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake.
  • Mangroves are forests of salt-tolerant trees and shrubs that grow in the shallow tidal waters of estuaries and coastal areas in tropical regions. Mangroves protect shorelines from damaging storm and hurricane winds and tsunami.
  • A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Coral reefs provide protection to our coasts from the tsunami, storms, and floods.
  • Hence Coral Reefs and Mangroves can act as natural barriers to control Tsunami.
  • So, the correct answer is 'Both A and B'.
Multiple choice geography hydrologic cycle the atmosphere elements of weather and climate :humidity hydrologic cycle and its components elements of weather and climate : temperature

What percentage of earth's surface is full of water?

  1. 70%

  2. 75%

  3. 70.8%

  4. 71%
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

70.8% part of the earth's surface is full of water. The distribution of this water is very uneven. At some places, the water storage is limited while it is ample at other place.

Multiple choice evs - i hydrologic cycle the atmosphere elements of weather and climate :humidity hydrologic cycle and its components elements of weather and climate : temperature

The process by which water continually changes its form and circulates between oceans, atmosphere and land _____________.

  1. Tides

  2. Water cycle

  3. Rain

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

The water cycle describes how water evaporates from the surface of the earth, rises into the atmosphere, cools and condenses into rain or snow in clouds, and falls again to the surface as precipitation.

Multiple choice geography australia - location, political divisions and physical features australia australia australia - geographical features

What is Great Barrier Reef?

  1. A belt of Coral along the east coasts of Australia

  2. A cave between Sydney and Malbourne

  3. A fish found area in the sea near New Zealand

  4. A mine situated in the Great Victoria Valley
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Great Barrier Reef is the world's largest coral reef system composed of over 2,900 individual reefs and 900 islands stretching for over 2,300 kilometres (1,400 mi) over an area of approximately 344,400 square kilometres (133,000 sq mi). The reef is located in the Coral Sea, off the coast of Queensland, Australia.

Multiple choice geography international development international development and world population and its impact on resources population growth and impact on resources reproductive health in humans

Freshwater constitutes ______ % of the water that is available on the Earth's surface.

  1. 0.30%

  2. 0.5%

  3. 0.05%

  4. 0.03%
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Only 2.5% of water is freshwater and less than 0.3% of all freshwater is in river, lakes, and the atmosphere, and an even smaller amount of the Earth's freshwater(0.003) is contained within biological bodies and manufactured products.