SSLC (English Medium) Class 9 - Tamil Nadu Board of Secondary Education Question Bank Solutions

Assertion(A): Flat-topped seamounts are known as Guyots.

Reason(R): All guyot features are of volcanic origin.

Assertion(A): Submarine canyons are deep gorges on the ocean floor.

Reason(R): They are mainly restricted to continental shelf, slope and rise.

Assertion (A): Atolls are more common in the Atlantic ocean.

Reason(R): The marine population at the depth is less.

Match the following:

Mention the various relief features of ocean floor.

What are the factors that generate the ocean currents?

Write a brief note on sea waves.

The northern hemisphere and the southern hemisphere are called land and water hemispheres respectively.

Continental shelf provides good fishing ground.

Distinguish between Spring tide and Neap tide.

Distinguish between Abyssal plains and Ocean deeps.

Write a note on continental shelf and continental slope.

What do you mean by ocean currents? 

Explain the types of ocean currents.

The coldest biome on Earth is.

Nutrients are recycled in the atmosphere with the help of certain micro organisms, referred to as.

To which climatic conditions are Xerophytic plants specifically adapted to?

Why is the usage of rainforest biomes for large scale agriculture unsustainable?

A: Hotspots are the regions characterized by numerous endemic plants and animal species living in a vulnerable environment.

R: To manage and focus on conservation work more effectively, researchers identified hotspots.

The vegetative type commonly found in desert biomes is called __________.