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Q:

Which one of the following pairs about organ/part that helps in locomotion is not correctly matched?

A) Euglena : Flagellum B) Paramecium : Cilia
C) Nereis : Pseudopodia D) Starfish : Tubefeet
 
Answer & Explanation Answer: C) Nereis : Pseudopodia

Explanation:

Euglena move by a flagellum (plural ‚ flagella), which is a long whip-like structure that acts like a little motor.

The paramecium uses its cilia to sweep the food along with some water into the cell mouth after it falls into the oral groove.

The underside of the starfish is covered with hundreds of tube feet, which it uses for walking around, for attaching tightly to rocks, and for holding on to prey.

Nereis possess setae and parapodia for locomotion

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Filed Under: Biology
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Q:

Read the passage carefully and choose the best answer to each question out of the four alternatives and click the button corresponding to it.


Crude mineral oil comes out of the earth as a thick brown or black liquid with a strong smell. It is a complex mixture of many different substances, each with its own individual qualities. Most of them are combinations of hydrogen and carbon in varying proportions. Such hydrocarbons are also found in other forms such as bitumen, asphalt and natural gas. Mineral oil originates from the carcasses of tiny animals and from plants that live in the sea. Over million of years, these dead creatures form large deposits under sea­bed and ocean currents cover them with a blanket of sand and silt. As this material hardens, it becomes sedimentary rock and effectively shuts out the oxygen, thus preventing the complete decomposition of the marine deposits underneath. The layers of sedimentary rocks become thicker, and heavier. Their pressure produces heat, which transforms the tiny carcasses into crude oil in a process that is still going on today.


The time taken for the marine deposits to harden into rocks is

A) a few centuries B) millions of years
C) a few decades D) thousands of years
 
Answer & Explanation Answer: B) millions of years

Explanation:
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Filed Under: English
Exam Prep: Bank Exams

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Q:

Gases in the atmosphere and their percentages?

Answer

The air around us is a mixture of gases, mainly nitrogen and oxygen, but containing much smaller amounts of water and other gases.


Earth's atmosphere is composed of many gases. Their percentages by volume is given by::


 
78% Nitrogen,


21% Oxygen,


0.9% Argon, and


0.03% Carbon dioxide 


And very small percentages of other elements.


 

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Subject: General Science Exam Prep: AIEEE , Bank Exams , GATE
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Q:

Indian city that has been chosen by the UN for the Global Continuing City-2025 Program?

A) Hyderabad B) Delhi
C) Bangaluru D) Noida
 
Answer & Explanation Answer: D) Noida

Explanation:

Noida city of India has recently been chosen by the UN for the Global Continuing City-2025 Program.

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Filed Under: General Awareness
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Q:

Which was true of Pullman porters in the 1920s?

A) The porters could not start a union because it was illegal. B) The porters needed a union because they were not treated well.
C) The porters did not need a union because they made good money. D) The porters could not start a union because they were African American.
 
Answer & Explanation Answer: B) The porters needed a union because they were not treated well.

Explanation:
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Filed Under: World History
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Q:

What is the tallest mountain in Africa?

Answer

Mount Kilimanjaro

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Subject: World Geography

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Q:

Other things equal an improvement in productivity will

A) shift the aggregate demand curve to the left B) shift the aggregate supply curve to the right
C) increase the equilibrium price level D) shift the aggregate supply curve to the left
 
Answer & Explanation Answer: B) shift the aggregate supply curve to the right

Explanation:
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Filed Under: Business Awareness
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Q:

The mammalian heart is myogenic and it is regulated by nerves. The heartbeat originates from

A) sinoatrial node B) QRS wave
C) T wave D) hepatic portal system
 
Answer & Explanation Answer: C) T wave

Explanation:

The mammalian heartis called myogenic (myo = muscle, genie = originating from). It means the heart beat or the activities of the heart are auto regulated which originates from a muscle called nodal tissue.In the human heart,heartbeat originates and contraction is initiated by a special modified heart muscle known as sinoatrial node. It is located in the right atrium; while the QRS waves are the depolarisation of the ventricles, which initiates the ventricular contraction.The T-wave represents the repolarisation,that is, the return of the ventricles from excited tonormal state.Hepatic portal system is the unique vascular connection that exists between the digestive tract and liver. This vein carries blood from intestine to the liver.

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Filed Under: Biology
Exam Prep: Bank Exams

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