General Science Jkssb Biology Set 1 Mcqs (605 MCQs) | JKSSB & SSC Quiz

General Science

jkssb biology set 1 mcqs

Download PDF

Topics

jkssb physics set 1 mcqs jkssb chemistry set 1 mcqs jkssb biology set 1 mcqs

Practice Questions

605 Total
Question 461 Discuss
Ask a Friend

Identify the 'Inert' gas found in the Earth's atmosphere

A
Argon
B
Methane
C
Ammonia
D
Carbon Dioxide

Answer & Explanation

Correct Option: A

Argon is the third most abundant gas in the atmosphere (approx 0.93%) and is chemically inert.
Question 462 Discuss
Ask a Friend

The 'Lichen' is used as a natural indicator for

A
Water pollution
B
Air pollution (SO2)
C
Noise pollution
D
Soil salinity

Answer & Explanation

Correct Option: B

Lichens are sensitive to sulfur dioxide; their absence in an area indicates high air pollution levels.
Question 463 Discuss
Ask a Friend

The hormone 'Thyroxine' contains which specific element

A
Iron
B
Iodine
C
Calcium
D
Zinc

Answer & Explanation

Correct Option: B

The thyroid gland requires iodine to synthesize T3 and T4 (Thyroxine) hormones.
Question 464 Discuss
Ask a Friend

Which cell organelle is known as the 'Sorting Center' or 'Post Office' of the cell

A
Lysosome
B
Golgi Apparatus
C
Mitochondria
D
Ribosome

Answer & Explanation

Correct Option: B

Golgi apparatus processes proteins and 'labels' them for their final destination.
Question 465 Discuss
Ask a Friend

Which of the following is 'NOT' a part of a standard Ecosystem

A
Producers
B
Consumers
C
Decomposers
D
Pollutants

Answer & Explanation

Correct Option: D

Ecosystem components are biotic (living) and abiotic (non-living nature); pollutants are external stressors.
Question 466 Discuss
Ask a Friend

The 'Optic Nerve' exits the eyeball at a point where there are no rods or cones This point is the

A
Fovea
B
Blind Spot
C
Macula
D
Cornea

Answer & Explanation

Correct Option: B

Also called the optic disc, it lacks photoreceptors, so no vision is possible at this exact location.
Question 467 Discuss
Ask a Friend

The 'RBCs' in humans are biconcave and lack a nucleus to

A
Protect them from viral infections
B
Increase the surface area and space for hemoglobin
C
Move faster in the blood stream
D
Avoid being destroyed by the spleen

Answer & Explanation

Correct Option: B

This specialization allows RBCs to carry maximum oxygen and squeeze through narrow capillaries.
Question 468 Discuss
Ask a Friend

Identify the 'First' enzyme produced by a newborn for the digestion of milk

A
Pepsin
B
Rennin
C
Trypsin
D
Lipase

Answer & Explanation

Correct Option: B

Rennin (Chymosin) curdles milk in the stomach of infants to slow its passage and improve digestion.
Question 469 Discuss
Ask a Friend

The 'Red Data Book' contains information about

A
Red colored plants
B
Threatened and endangered species
C
Extinct minerals
D
Invasive species only

Answer & Explanation

Correct Option: B

Maintained by the IUCN, it provides data on the conservation status of biological species.
Question 470 Discuss
Ask a Friend

Which of the following is a 'Double Stranded' DNA virus

A
HIV
B
Bacteriophage T2
C
Influenza Virus
D
Ebola Virus

Answer & Explanation

Correct Option: B

Most bacteriophages contain dsDNA as their genetic material.
Previous Next