NAUNIHAL ISLAMIA PUBLIC SCHOOL KACHURA
EXAM: First SEMESTER 2025
Subject: Biology
Class: 10th
Name: __________________________
Marks: 15
Roll No: __________
Time Allowed: 20 M
______________________________________________________________________________
Section A
[15]
Q.1. Circle the correct options.
1) The longest part of the human digestive system is:
a) Esophagus
c) Small intestine
b) Stomach
d) Large intestine
2) Which enzyme digests proteins in the stomach?
a) Lipase
c) Amylase
b) Pepsin
d) Maltase
3) The part of the circulatory system where exchange of materials occurs is:
a) Arteries
b) Veins
c) Capillaries
d) Atrium
4) Which organ produces bile?
a) Pancreas
c) Stomach
b) Gallbladder
d) Liver
5) The valve between the left atrium and left ventricle is called:
a) Pulmonary valve
b) Bicuspid valve
c) Tricuspid valve
d) Aortic valve
6) The process of breaking down food into simpler forms is called:
a) Absorption
b) Digestion
c) Egestion
d) Ingestion
7) Blood is pumped from heart to lungs via:
a) Pulmonary artery
c) Aorta
b) Pulmonary vein
d) Vena cava
8) Which enzyme is present in saliva?
a) Pepsin
c) Amylase
b) Trypsin
d) Lipase
9) Platelets help in:
a) Digestion
c) Clotting
b) Immunity
d) Respiration
10) Which blood group is known as universal donor?
a) AB+
c) B+
b) O–
d) A–
11) Which part of the digestive system absorbs most nutrients?
a) Mouth
b) Small intestine
c) Large intestine
d) Rectum
12) Which component of blood fights infection?
a) RBCs
c) Plasma
b) Platelets
d) WBCs
13) The main function of villi is:
a) Digestion
c) Absorption
b) Circulation
d) Excretion
14) Which chamber of the heart receives oxygenated blood from lungs?
a) Left atrium
b) Right atrium
c) Right ventricle
d) Left ventricle
15) The rhythmic contraction of the heart is known as:
a) Peristalsis
c) Diastole
b) Systole
d) Pulse