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 271 Discuss
Ask a Friend

A person suffering from 'Presbyopia' typically uses which type of lens for correction

A
Concave lens
B
Convex lens
C
Bifocal lens
D
Cylindrical lens

Answer & Explanation

Correct Option: C

Presbyopia is age-related loss of near vision; bifocals have both convex (for reading) and concave/plain parts.
Question 272 Discuss
Ask a Friend

The concept of 'Survival of the Fittest' was originally phrased by

A
Charles Darwin
B
Herbert Spencer
C
Jean-Baptiste Lamarck
D
Gregor Mendel

Answer & Explanation

Correct Option: B

While Darwin used the term, it was coined by Herbert Spencer after reading Darwin's 'On the Origin of Species'.
Question 273 Discuss
Ask a Friend

Which of the following is a primary consumer in a forest ecosystem

A
Tiger
B
Snake
C
Deer
D
Eagle

Answer & Explanation

Correct Option: C

Primary consumers are herbivores that feed directly on producers (plants).
Question 274 Discuss
Ask a Friend

In humans the gene for Hemophilia is located on

A
Autosomes
B
Y-chromosome only
C
X-chromosome only
D
Both X and Y chromosomes

Answer & Explanation

Correct Option: C

Hemophilia is an X-linked recessive disorder, which is why it is more common in males.
Question 275 Discuss
Ask a Friend

Identify the correct sequence of the passage of air during inhalation in humans

A
Nostrils Pharynx Larynx Trachea Alveoli
B
Nostrils Larynx Pharynx Trachea Alveoli
C
Nostrils Trachea Larynx Pharynx Alveoli
D
Nostrils Pharynx Trachea Larynx Alveoli

Answer & Explanation

Correct Option: A

Air enters through nostrils, passes the pharynx (throat), larynx (voice box), then trachea before reaching the lungs/alveoli.
Question 276 Discuss
Ask a Friend

Which hormone is known as the 'Flight or Fight' hormone and is secreted by the adrenal medulla

A
Thyroxine
B
Adrenaline
C
Insulin
D
Oxytocin

Answer & Explanation

Correct Option: B

Adrenaline (epinephrine) prepares the body for emergency situations by increasing heart rate and blood sugar.
Question 277 Discuss
Ask a Friend

The 'Fluid Mosaic Model' of the cell membrane was proposed by

A
Schleiden and Schwann
B
Watson and Crick
C
Singer and Nicolson
D
Robert Hooke

Answer & Explanation

Correct Option: C

Proposed in 1972, this model describes the cell membrane as a tapestry of proteins and lipids that move fluidly.
Question 278 Discuss
Ask a Friend

Which of the following is a vestigial organ in the human body

A
Wisdom teeth
B
Gallbladder
C
Spleen
D
Eyelids

Answer & Explanation

Correct Option: A

Vestigial organs are structures that have lost their original function through evolution, such as the vermiform appendix or wisdom teeth.
Question 279 Discuss
Ask a Friend

During photosynthesis the oxygen evolved comes from the splitting of

A
Carbon dioxide
B
Water
C
Chlorophyll
D
Glucose

Answer & Explanation

Correct Option: B

Photolysis of water in the light-dependent reaction releases oxygen as a byproduct.
Question 280 Discuss
Ask a Friend

The term 'Ecosystem' was first coined by

A
Charles Darwin
B
A G Tansley
C
E P Odum
D
Humboldt

Answer & Explanation

Correct Option: B

Arthur George Tansley coined the term in 1935 to describe the biological community and its physical environment.
Previous Next