This set of Marine Biotechnology Multiple Choice Questions & Answers (MCQs) focuses on “Ocean Habitat – Set 3”.
1. Solubility of gases is greater at lower temperatures.
a) True
b) False
View Answer
Explanation: Solubility of gases in seawater is influenced largely by temperature, and is greater at lower temperatures. Most abundant gases dissolved in the seawater are Nitrogen, Carbon dioxide and Oxygen.
2. Which of the following zone prevails at the seawater depth of 1000 meters?
a) Twilight zone
b) Oxygen minimum zone
c) Euphotic zone
d) Hadal zone
View Answer
Explanation: Oxygen minimum zone is prevailing at a seawater depth of 1000 meters. In this zone the oxygen replenished by density-driven sinking and slow diffusion from the surface layers, is used up by respiration and bacterial decomposition.
3. Waves entering shallow waters are _________________
a) high, steep
b) low, steep
c) high, straight
d) low, straight
View Answer
Explanation: Waves that enter shallow waters behave differently from waves that enter open oceans. Waves provide motion of the water about depths half the wavelength. In shallow waters with depth less than half the wavelength, bottom friction mitigates the speed of the wave, causing the waves to become high and steep.
4. Surface currents do not represent horizontal movement of water molecules.
a) True
b) False
View Answer
Explanation: Surface currents, unlike the waves (caused due to differential warming up of Earth’s surface) cause the horizontal movement of water. Surface currents arise when winds blowing over the ocean surface transfer moment to the underlying water molecules by friction.
5. The trade winds blow from the _____________________
a) northeast to southwest
b) southwest to northeast
c) west to southwest
d) east to west
View Answer
Explanation: Three types of wind belts driven by stable patterns of winds over the ocean surface occur in the Northern as wells in the Southern hemisphere. Trade winds are one of the types, blowing from northeast to southwest.
6. The surface water moved by the wind does not flow parallel to the direction of the wind due to _________________
a) coriolis effect
b) pycnocline
c) oxygen minimum zone
d) thermohaline circulation
View Answer
Explanation: The surface water moved by the wind does not flow parallel to the direction of the wind due to deflection imposed by the Coriolis effect. It causes deflection of the water masses to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.
7. As explained by Sir Isaac Newton, ocean tides are a consequence of ________________
a) surface currents
b) gravitational attraction of sun
c) gravitational attraction of sun and moon
d) Ekman spiral
View Answer
Explanation: In his Principia Mathematica, Sir Isaac Newton explained that ocean tides are a consequence of gravitational attraction by the sun and moon on Oceans of the Earth.
8. Spring tides are characterized by ___________________
a) extra-high high tides
b) low-high tides
c) high-low tides
d) extra-high low tides
View Answer
Explanation: The solar tide has an additive effect on the lunar tide when the Sun, Moon and Earth are in approximate alignment. The resulting tides are called the spring tides characterized by extra-high high tides and very low low tides.
Sanfoundry Global Education & Learning Series – Marine Biotechnology.
To practice all areas of Marine Biotechnology, here is complete set of 1000+ Multiple Choice Questions and Answers.
If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]
