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 41 Discuss
Ask a Friend

Which of the following is a food-borne disease caused by the consumption of contaminated food or beverages?

A
Malaria
B
Tuberculosis
C
Chicken pox
D
Cholera

Answer & Explanation

Correct Option: D

Cholera is a virulent food-borne and water-borne infectious disease heavily transmitted worldwide through the direct ingestion of items acutely contaminated with the Vibrio cholerae bacterium.
Question 42 Discuss
Ask a Friend

How do the muscle cells help in movement?

A
The lining of the vessels inside help in movement.
B
The contraction and relaxation of these cells result in movement.
C
The blood flow of the cells helps in movement.
D
The thickness of the cell layer helps in movement.

Answer & Explanation

Correct Option: B

Muscle cells are packed with specialized protein filaments that slide rapidly past one another, thereby allowing the cells to forcibly contract and relax to generate all bodily movement.
Question 43 Discuss
Ask a Friend

Which group of animals has a segmented spinal column together with a few primitive forms in which the backbone is represented by a notochord?

A
Arthropoda
B
Echinodermata
C
Mollusca
D
Vertebrata

Answer & Explanation

Correct Option: D

The biological subphylum Vertebrata is fundamentally defined by the physical presence of a robust, segmented protective spinal column (or a basic notochord in highly basal forms).
Question 44 Discuss
Ask a Friend

Who developed the technique of preserving the quality of food by raising its temperature to prevent microbial growth in the food?

A
Robert Koch
B
Antonie van Leeuwenhoek
C
Louis Pasteur
D
Joseph Lister

Answer & Explanation

Correct Option: C

The brilliant French chemist Louis Pasteur officially invented pasteurization, a truly revolutionary thermal process that safely destroys rapidly multiplying pathogenic microorganisms in susceptible foods and beverages.
Question 45 Discuss
Ask a Friend

Which of the following is NOT a mutation based disease?

A
Sickle cell anaemia
B
Malaria
C
Phenylketonuria
D
Down syndrome

Answer & Explanation

Correct Option: B

Malaria is a highly infectious parasitic disease caused by Plasmodium and vastly transmitted by mosquitoes, whereas conditions like sickle cell anemia are fundamentally caused by direct genetic mutations.
Question 46 Discuss
Ask a Friend

Identify the INCORRECT statement regarding invertebrates from the options given below.

A
They have open circulatory system as there is no organisation in the distribution.
B
They have radial or bilateral body symmetry.
C
They have a pair of solid nerve cords, situated ventrally and bearing segmentally arranged ganglia.
D
They possess a backbone and an internal skeleton.

Answer & Explanation

Correct Option: D

By pure biological definition, invertebrates completely lack a vertebral column (backbone) and an extensive internal bony skeletal structure, which are essentially the exclusive hallmarks of vertebrate animals.
Question 47 Discuss
Ask a Friend

The cell wall of bacteria is made up of:

A
peptidoglycan
B
cellulose
C
glycogen
D
peptone

Answer & Explanation

Correct Option: A

Unlike rigid plant cell walls solely made of cellulose, protective bacterial cell walls are primarily and robustly composed of peptidoglycan, an intricate polymer array of specific sugars and amino acids.
Question 48 Discuss
Ask a Friend

Which of the following sequences is correct, according to taxonomy?

A
Order, Phylum, Family, Genus
B
Kingdom, Phylum, Class, Order
C
Class, Family, Order, Species
D
Kingdom, Order, Genus, Phylum

Answer & Explanation

Correct Option: B

The globally accepted standard hierarchical classification system in modern taxonomy strictly follows the logical descending order of Kingdom, Phylum, Class, Order, Family, Genus, and Species.
Question 49 Discuss
Ask a Friend

What do you mean by semiconservative DNA replication?

A
After the completion of replication, each DNA molecule would have two parental and two newly synthesised strand.
B
RNA is dependent on DNA for the synthesis of proteins
C
DNA is dependent on RNA for the synthesis of proteins
D
After the completion of replication, each DNA molecule would have one parental and one newly synthesised strand.

Answer & Explanation

Correct Option: D

Semiconservative replication definitively means that each newly formed DNA double helix reliably retains one original parental template strand perfectly paired with one entirely new, complementary synthetic strand.
Question 50 Discuss
Ask a Friend

Which of the following statements about eutrophication is correct?

A
It happens when too much carbon enriches the water, causing excessive growth of bacteria and reduced growth of plants.
B
It happens when too less nitrogen is present in the water, causing reduced growth of plants and algae.
C
It is a beneficial process for environment restoration.
D
It happens when too much nitrogen enriches the water, causing excessive growth of plants and algae.

Answer & Explanation

Correct Option: D

Eutrophication is an often destructive ecological process that rapidly occurs when water bodies become overly enriched with vital nutrients like nitrogen and phosphorus, triggering explosive and highly harmful algal blooms.
Previous Next