Questions

Q:

Phosphorescence is a phenomenon associated with which algal division?

A) Dinoflagellates B) Brown algae
C) Red algae D) Euglenophytes
 
Answer & Explanation Answer: D) Euglenophytes

Explanation:

Phosphorescence is a phenomenon associated with an algal division called euglenophytes. 

 

Phosphorescence is a phenomenon when an object is capable of releasing photons of light at a longer wavelength in response to absorbing light of a shorter wavelength. The object releasing the light only releases the light after some time has passed since it absorbed the light of a short wavelength.

 

Euglenophytes are single-celled plant-like protists that have no cell wall.

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Q:

An example of a latent viral infection is

A) Influenza B) Mumps
C) Cold sores D) Smallpox
 
Answer & Explanation Answer: C) Cold sores

Explanation:
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Q:

Oxygen crosses a plasma membrane by

A) Osmosis B) Evaporation
C) Concatenation D) Diffusion
 
Answer & Explanation Answer: A) Osmosis

Explanation:

Oxygen crosses a plasma membrane by Osmosis.

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Q:

A feature of catabolic reactions is that they

A) occur only in mitochondria B) occur only during loss of body weight
C) involve release of energy D) involve consumption of energy
 
Answer & Explanation Answer: C) involve release of energy

Explanation:
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Q:

The given sentences, when properly sequenced, form a coherent paragraph. Each sentence is labelled with a letter. Choose the most logical order of the sentences from among the five given choices to construct a coherent paragraph keeping 1 as the first statement.

1) For first-time Indian travellers, stepping out of the airport in Singapore or Japan is a momentous, potentially mindset-changing experience.

A) But walk in a cramped gully in Delhi or even on the main road and everything that is not desirable inside, finds its way outside.

B) Public littering is a social issue that results in massive aesthetic, financial and health- related costs for India. It’s not as if we don’t value cleanliness. Our homes are the textbook definition of clean.

C) How does that compare with our paan- stained buses filled with peanut shells?

D) How can bustling cities packed with people be so spotless? As far as the eye can go, there is not a single piece of stray paper on the road or in public transport.

A) BCAD B) DCBA
C) DBCA D) ADBC
 
Answer & Explanation Answer: B) DCBA

Explanation:

The correct sequence is DCBA.

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Q:

In Paramecium, the food is moved to a specific spot by the movement of ______ which cover the entire surface of the cell.

A) cilia B) villi
C) pseudopodia D) vacuole
 
Answer & Explanation Answer: A) cilia

Explanation:
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Q:

Produces a usable form of energy for the cell

A) Lysosomes B) Vacuoles
C) Mitochondria D) Ribosomes
 
Answer & Explanation Answer: C) Mitochondria

Explanation:

We all know that, Mitochondria is the powerhouse of the cell. In both Plants and animals, it produces a usable form of energy.

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Q:

Which of the following is the India's first underwater robotic drone?

A) EyeROV TUNA B) HandROV TUNA
C) BrainROV TUNA D) HeadROV TUNA
 
Answer & Explanation Answer: A) EyeROV TUNA

Explanation:

EyeROV TUNA, the India's first underwater robotic drone was launched and handed over to Kochi based DRDO lab and it can send realtime videos of ships and other underwater structures to help with their repair and maintenance.

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