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 101 Discuss
Ask a Friend

When protein-rich gelatinous egg white is heated, it turns to solid white due to:

A
Fermentation
B
Protein Denaturation
C
Gluten Formation
D
Emulsification

Answer & Explanation

Correct Option: B

Applying heat to an egg white violently breaks the weak chemical bonds within its proteins, resulting in protein denaturation and a permanent change from a liquid to a solid state.
Question 102 Discuss
Ask a Friend

Match the columns. Column A (Plant Group) i. Bryophyta ii. Pteridophyta iii. Gymnosperms iv. Angiosperms Column B (Example)

A
i-d, ii-c, iii-b, iv-a
B
i-c, ii-d, iii-b, iv-a
C
i-c, ii-a, iii-b, iv-d
D
i-c, ii-d, iii-a, iv-b

Answer & Explanation

Correct Option: B

In plant taxonomy, bryophytes are non-vascular plants, pteridophytes are seedless vascular plants, gymnosperms bear uncovered 'naked' seeds, and angiosperms produce seeds fully enclosed within fruits.
Question 103 Discuss
Ask a Friend

Several biological processes are catalysed by enzymes. Digestive enzymes are present in which part of the cell?

A
Ribosomes
B
Lysosomes
C
Mitochondria
D
Nucleus

Answer & Explanation

Correct Option: B

Lysosomes are membrane-bound organelles that contain a concentrated variety of hydrolytic digestive enzymes required to break down cellular waste, debris, and foreign macromolecules.
Question 104 Discuss
Ask a Friend

Eutrophication is a condition where excessive growth of algal bloom occurs on the surface of a water body because of abundant nutrients. Which of the following are the key nutrients for eutrophication?

A
Phosphorus and iron
B
Iron and nitrogen
C
Nitrogen and potassium
D
Phosphorus and nitrogen

Answer & Explanation

Correct Option: D

Excessive agricultural runoff frequently introduces abnormally high levels of phosphorus and nitrogen into local water bodies, artificially fueling the rapid and dense growth of algae.
Question 105 Discuss
Ask a Friend

Which of the following phyla contains Leech?

A
Coelenterata
B
Platyhelminthes
C
Nematoda
D
Annelida

Answer & Explanation

Correct Option: D

Leeches are definitively categorized as segmented worms and therefore belong to the phylum Annelida, a group that includes earthworms and all internally segmented ringed worms.
Question 106 Discuss
Ask a Friend

Which of the following diseases is detected by the Widal test?

A
Malaria
B
Cholera
C
Tuberculosis
D
Typhoid fever

Answer & Explanation

Correct Option: D

Developed in 1896, the Widal test is a classic serological blood test still utilized to detect the presence of Salmonella enterica antibodies to diagnose typhoid fever.
Question 107 Discuss
Ask a Friend

Which of the following are primary functions related to the notochord in chordate embryos? A) Provides skeletal support B) Serves as a source of midline signals C) Aids in muscle attachment D) Digests food

A
Only A, B and C
B
Only B, C and D
C
Only A and C
D
Only C and D

Answer & Explanation

Correct Option: A

The notochord is a defining, flexible rod in chordate embryos that provides vital structural support, aids in muscle attachment, and releases molecular signals required for central nervous system development.
Question 108 Discuss
Ask a Friend

It is observed that a child's heart rate is 135 times per minute. The beat frequency of heart is .

A
8100 Hz
B
1.12 Hz
C
135 Hz
D
2.25 Hz

Answer & Explanation

Correct Option: D

Frequency is mathematically defined as the number of repeating cycles per second (Hertz); thus, dividing 135 beats by 60 seconds yields a standardized frequency of 2.25 Hz.
Question 109 Discuss
Ask a Friend

Which of the following characteristics was used by Aristotle to classify animals?

A
Specialised organs
B
Types of body cells
C
Habitat
D
Photosynthesis

Answer & Explanation

Correct Option: C

In early biological taxonomy, the ancient Greek philosopher Aristotle broadly classified animals based primarily on their observable habitat, categorizing them into groups that lived exclusively on land, in water, or in the air.
Question 110 Discuss
Ask a Friend

In a food chain of Algae-Shrimp-Fish-Bird, if the energy available at the bird is 4 kJ , then the energy available at the shrimp is:

A
400 kJ
B
40 kJ
C
4000 kJ
D
0.4 kJ

Answer & Explanation

Correct Option: A

According to the ecological 10% rule of energy transfer, energy multiplies by ten descending down each trophic level; therefore, if the bird receives 4 kJ, the fish had 40 kJ, and the shrimp originally possessed 400 kJ.
Previous Next