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 541 Discuss
Ask a Friend

Which specific 'WBC' is involved in the secretion of Histamine Heparin and Serotonin

A
Neutrophils
B
Basophils
C
Eosinophils
D
Monocytes

Answer & Explanation

Correct Option: B

Basophils play a key role in inflammatory and allergic responses through these chemical mediators.
Question 542 Discuss
Ask a Friend

Identify the hormone that is called the 'Antagonist' to Insulin

A
Thyroxine
B
Glucagon
C
Adrenaline
D
Cortisol

Answer & Explanation

Correct Option: B

Glucagon raises blood sugar levels by stimulating glycogen breakdown, opposite to insulin's action.
Question 543 Discuss
Ask a Friend

The 'Juxtaglomerular Apparatus' (JGA) in the kidney is sensitive to a drop in

A
Blood pressure or GFR
B
Blood glucose
C
Urea concentration
D
Body temperature

Answer & Explanation

Correct Option: A

A fall in GFR triggers JGA cells to release Renin, activating the RAAS system to restore blood pressure.
Question 544 Discuss
Ask a Friend

Which of the following is a 'Connecting Link' between Annelids and Molluscs

A
Peripatus
B
Neopilina
C
Archaeopteryx
D
Platypus

Answer & Explanation

Correct Option: B

Neopilina shows both segmented characteristics (Annelid) and a mantle/shell (Mollusc).
Question 545 Discuss
Ask a Friend

In the human eye 'Astigmatism' is caused by

A
Weakening of the ciliary muscles
B
Irregular curvature of the cornea or lens
C
Elongation of the eyeball
D
Opacity of the vitreous humor

Answer & Explanation

Correct Option: B

Astigmatism prevents light from focusing on a single point, causing blurred vision at all distances.
Question 546 Discuss
Ask a Friend

Which specific 'Cell Organelle' is responsible for the detoxification of drugs and poisons in the Liver

A
Rough Endoplasmic Reticulum
B
Smooth Endoplasmic Reticulum
C
Golgi Apparatus
D
Mitochondria

Answer & Explanation

Correct Option: B

Smooth ER contains enzymes (like Cytochrome P450) that metabolize toxins and drugs.
Question 547 Discuss
Ask a Friend

The 'Pistil' of a flower consists of which three parts

A
Anther Filament Stigma
B
Stigma Style Ovary
C
Sepal Petal Stamen
D
Ovule Style Filament

Answer & Explanation

Correct Option: B

The stigma receives pollen, the style is the connecting tube, and the ovary contains the ovules.
Question 548 Discuss
Ask a Friend

Which of the following describes 'Bio-accumulation' accurately

A
Increase in pollutant concentration in one organism over time
B
Increase in pollutant concentration as it moves up the food chain
C
Rate of decay of radioactive minerals
D
Growth of bacteria in a petri dish

Answer & Explanation

Correct Option: A

Bio-accumulation is the buildup of a chemical in an individual; Bio-magnification is the buildup across trophic levels.
Question 549 Discuss
Ask a Friend

Identify the correctly matched 'Vitamin' and its chemical name

A
Vitamin D - Retinol
B
Vitamin E - Tocopherol
C
Vitamin K - Calciferol
D
Vitamin A - Phylloquinone

Answer & Explanation

Correct Option: B

A is Retinol, D is Calciferol, E is Tocopherol, and K is Phylloquinone.
Question 550 Discuss
Ask a Friend

In the human digestive system 'Lipases' break down fats into

A
Amino acids
B
Glucose
C
Fatty acids and Glycerol
D
Nucleotides

Answer & Explanation

Correct Option: C

Lipases catalyze the hydrolysis of triglycerides into their constituent fatty acids and glycerol.
Previous Next