Explore topic-wise MCQs in Biology.

This section includes 5751 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.

5051.

Digestion of starch in the mouth into sugar is done by

A. Tylin
B. lipase
C. amylase
D. pepsin
Answer» B. lipase
5052.

What is the enzyme that digests milk protein?

A. trypsin
B. Eropsin
C. renin
D. pepsin
Answer» D. pepsin
5053.

Where are maximum nutrients absorbed into the blood?

A. mouth
B. small intestine
C. large intestine
D. stomach
Answer» C. large intestine
5054.

What type of reaction is the digestion of food?

A. oxidation
B. combination
C. reduction
D. displacement
Answer» B. combination
5055.

Which of the following is called photosynthetic organelle?

A. leaf
B. green cover
C. Stomata
D. root
Answer» B. green cover
5056.

For exchange of gases in plants live?

A. root
B. stoma
C. twig
D. stem
Answer» C. twig
5057.

By which process more water is removed from the plant than required?

A. absorption
B. वास्पोत्सजर्न
C. emissions
D. Photosynthesis
Answer» C. emissions
5058.

What is the size of the lung?

A. round shape
B. Cylindrical
C. conical
D. oval
Answer» D. oval
5059.

What is the state of high blood pressure called?

A. hypotension
B. paralysis
C. Hypertension
D. none of these
Answer» D. none of these
5060.

What is the excretory substance in fish?

A. amino acid
B. uric acid
C. urea
D. ammonia
Answer» E.
5061.

Which of the following diseases is related to the respiratory system?

A. diarrhea
B. t b
C. pneumoniae
D. (B
Answer» E.
5062.

CO2 is commonly found in the atmosphere?

A. 78 %
B. 21 %
C. 4 %
D. 0.03 %
Answer» E.
5063.

What does cow dung come under?

A. parasites
B. autotrophic
C. dead survivor
D. Osmosis
Answer» D. Osmosis
5064.

Who comes under biological process?

A. Nutrition
B. emissions
C. respiration
D. All
Answer» E.
5065.

What are the plants that grow in the shade called?

A. heliophytes
B. theophytes
C. syokites
D. none of these
Answer» D. none of these
5066.

What is the main respiratory organ in humans?

A. lung
B. Nose
C. trachea
D. cleome
Answer» B. Nose
5067.

Is the amount of glucose in the blood controlled?

A. due to somatostanin
B. due to glucagon
C. due to gastrin
D. because of insulin
Answer» E.
5068.

Which one of the following is not a digestive enzyme in the human system?

A. trypsin
B. pepsin
C. toylin
D. gastrin
Answer» E.
5069.

is it oxygen?

A. fat
B. Carbohydrate
C. Enzyme
D. hormones
Answer» D. hormones
5070.

Leg bone in human body?

A. is hollow
B. has a rivet
C. is porous
D. is solid
Answer» B. has a rivet
5071.

Which of the following is not a human foot bone?

A. tibia
B. fibula
C. femur
D. humerus
Answer» E.
5072.

In which organ most of the digestion takes place in the human body?

A. large intestine
B. stomach
C. small intestine
D. pancreas
Answer» D. pancreas
5073.

How many teeth grow twice in a human's life span?

A. 4
B. 12
C. 20
D. 28
Answer» D. 28
5074.

The longest bone in the human body is?

A. fibula
B. steppes
C. femur
D. tibia
Answer» D. tibia
5075.

Which part of the human body has the longest bone?

A. Spine
B. arm
C. rib cage
D. Thigh
Answer» E.
5076.

In which bone is the tibia found?

A. arm
B. mouth
C. leg
D. Skull
Answer» D. Skull
5077.

How many bones are there in human skull?

A. 8
B. 30
C. 32
D. 34
Answer» B. 30
5078.

How many bones are there in a newborn baby?

A. 200
B. 206
C. 208
D. 216
Answer» D. 216
5079.

How many pairs of ribs are there in the human body?

A. 10
B. 12
C. 14
D. 16
Answer» C. 14
5080.

What is the smallest bone in the human body?

A. nails
B. Nose
C. steppes
D. jaw
Answer» D. jaw
5081.

Which is the strongest bone in the body?

A. in the thigh
B. in the neck
C. in the arm
D. in the jaw
Answer» E.
5082.

Which vitamin is removed by washing peeled vegetables?

A. Vitamin A
B. Vitamin B
C. Vitamin C
D. Vitamin D
Answer» D. Vitamin D
5083.

Due to the presence of which of the following, sweetness comes in milk?

A. cyclos
B. sucrose
C. carotene
D. lactose
Answer» E.
5084.

How many total bones are there in a human?

A. 212
B. 206
C. 202
D. 200
Answer» C. 202
5085.

Which of the following is a vitamin?

A. folic acid
B. linoleic acid
C. citric acid
D. glutamic acid
Answer» B. linoleic acid
5086.

Yellow fever is transmitted by?

A. by Anopheles
B. by the fly
C. by Aedes
D. none of these
Answer» D. none of these
5087.

What is the cause of Minamata disease?

A. Such as
B. lead
C. cadmium
D. Mercury
Answer» E.
5088.

Which of the following diseases is contagious?

A. gout
B. diphtheria
C. Diabetes
D. cancer
Answer» C. Diabetes
5089.

What is Sun Sign Vitamin?

A. Vitamin A
B. Vitamin E
C. Vitamin K.
D. Vitamin D
Answer» E.
5090.

The radioisotope used for the treatment of cancer is

A. p-30
B. Co-60
C. P-32
D. C-14
Answer» C. P-32
5091.

Which of the following diseases is not spread by blood transfusion?

A. Hepatitis
B. typhoid
C. Malaria
D. none of these
Answer» C. Malaria
5092.

Which of the following diseases is usually spread through air?

A. plague
B. typhoid
C. cholera
D. none of these
Answer» B. typhoid
5093.

The organ whose function is revealed by EEG is?

A. Brain
B. ear
C. liver
D. heart
Answer» B. ear
5094.

Which of the following is not fat soluble?

A. Vitamin A
B. Vitamin B
C. Vitamin C
D. Vitamin D
Answer» C. Vitamin C
5095.

Is casein milk?

A. sugar
B. protein
C. fat
D. all these
Answer» C. fat
5096.

What is an important source of ocean weeds?

A. chlorine
B. Iodine
C. bromine
D. fluorine
Answer» C. bromine
5097.

Which of the following minerals is necessary to regulate the heartbeat?

A. potassium
B. chlorine
C. bromine
D. none of these
Answer» B. chlorine
5098.

Helps prevent infection in the human body?

A. Vitamin A
B. Vitamin B1
C. Vitamin C
D. Vitamin D
Answer» B. Vitamin B1
5099.

What is the cause of Japanese encephalitis?

A. bacteria
B. Virus
C. mold
D. none of these
Answer» C. mold
5100.

Deficiency of which element causes goiter disease?

A. nitrogen
B. calcium
C. Iodine
D. none of these
Answer» D. none of these