Top 200 Biology Questions with Answers in English 2023
Who is known as the father of zoology ?
Answer :- Aristotle
Deficiency of which hormone causes ‘Diabetes’?
Answer :- Insulin
Excess of which element in our body increases the chances of a heart attack ?
Answer :- Cholesterol
Which part of the human body is affected by TB?
Answer :- Lungs answer
Aids disease is Caused by which virus?
Answer :- HIV
Name the water-soluble vitamins ?
Answer :- Vitamin B and Vitamin C
Night blindness is Caused by a deficiency of Which Vitamin?
Answer :- Vitamin A
Which pollutant is responsible for Minamata disease?
Answer :- Mercury
In which year, India was declared a Polio free country?
Answer :- 2014
India was declared a polio-free country in 2014 on the 27th of March by WHO (World Health Organisation).
Which mosquito causes Malaria Disease in Humans?
Answer :- Female Anopheles mosquito
Which part of the body is affected by malaria?
Answer :- Liver
The image formed by Which Mirror is Usually real and inverted ?
Answer :- Concave Mirror
Name the scientist who discovered Neutron ?
Answer :- Chadwick
Optical Fibre mainly used in communication is based on which Principal ?
Answer :- Total internal Reflection
In the human body where formation of RBC take place?
Answer :- Bone Marrow
What is the name of the voice box of Human?
Answer :- Larynx
What is the name of the voice box of Bird?
Answer :- Syrinx
The Colour of the Eye depends upon the pigment present in _____?
Answer :- Iris
In biology study of the blood vascular system or circulatory system is called?
Answer :- Angiology
Which organ is called a digestive bag in the cell?
Answer :- Lysosome
Which tissue in a human where no cell division occurs after birth?
Answer :- Nerve tissue or neuron tissue.
Name the largest gland in the human body?
Answer :- Liver
Enzymes are basically Made up of?
Answer :- Proteins.
What is the dental formula of Humans?
Answer :- 2123
Name the scientist who coined the word ” cell “?
Answer :- Robert Hooke
what is a plant that grows in Sunlight called ?
Answer :- Heliophyte
Name the scientist who was given the double Standard Structure of DNA?
Answer :- Watson and Crick
Which part of the cell is called the powerhouse of the cell?
Answer :- Mitochondria
By which bond are the Two strands of DNA Joined together ?
Answer :- Hydrogen bond
The Colour of cow Milk is slightly yellow due to Presence of Which Element ?
Answer :- Carotene
Whi is the Hardest part of the human body.
Answer :- Tooth Enamel.
What is the branch of science that deals with the study of teeth called?
Answer :- Odontology.
what is the normal blood pressure of a healthy person?
Answer :- 120/80 mmHg
The study of blood is called as ?
Answer :- Hematology
Blood does not coagulate inside the body or in a blood vessel due to the presence of Which Element?
Answer :- Heparin
Blood pressure is measured by which instrument?
Answer :- Sphygmomanometer
What is the other name of Red Blood Corpuscles (RBC)?
Answer :- Erythrocytes
What is the other name of White Blood Corpuscles (WBC)?
Answer :- Leucocytes
What is the other name of Blood platelets?
Answer :- Thrmobocytes
Which Group of blood is called a universal recipient?
Answer :- Blood Group AB
Which type of cells is most abundant in the human body ?
Answer :- Red Blood Cells (RBC)
Which instrument is used to count the number of RBCs?
Answer :- Haemocytometer.
Oxygen is transported in the human body by _____?
Answer :- Blood
What is the other name of Blood Cancer?
Answer ;- Leukaemia
Rh-factor is related to which animal?
Answer :- Monkey
what is the pH value of human blood?
Answer :- 7.35 to 7.45
Which metal is present in Human blood?
Answer :- Iron (Fe)
Which blood cells help to fight infection and diseases?
Answer :- WBC (White blood cell)
The only part of the Human body where no blood is found is ?
Answer :- Cornea (eye)
What is the effect on RBC as we go to high Altitudes?
Answer :- Number of RBCs Is increases
What is called as “graveyard of RBC” ?
Answer :- Spleen
Which organ is called as “blood bank of the human body”?
Answer :- Spleen
What is the life Span of RBC?
Answer :- 120 days
Which protein helps in blood clotting?
Answer :- Fibrinogen
What is the Name of the three types of blood Corpuscles?
Answer :- Red Blood Corpuscles (RBC), White Blood Corpuscles (WBC), and Blood Platelets.
What is blood?
Answer :- Blood is a fluid connective tissue
The liquid part of blood is called?
Answer :- Plasma
What is the Colour of blood plasma?
Answer :- Yellow
Additional Information – The color of the blood plasma is yellow due to the presence of the pigment bilirubin.
In an adult person where RBC is produced?
Answer :- Bone Marrow.
Which vitamin helps in blood clotting?
Answer :- Vitamin K
Who discovered the blood group of Human Blood?
Answer :- Karl Landsteiner
The filtering of blood through an artificial kidney is called as?
Answer :- Dialysis.
Rh factor was initially found in?
Answer :- Rhesus monkey
Name the scientist who discovered blood circulation in human?
Answer :- William Harvey
Which diseases is caused by a deficiency of hemoglobin?
Answer :- Anaemia
Which diseases is caused by excess of Hemoglobin?
Answer :- Polycythemia
What is life span of WBC (White Blood Cells)?
Answer :- 5 to 20 days
What is the life span of Blood Platelets?
Answer :- 3 to 5 days
In human body where is pituitary gland located?
Answer :- Brain
How many bones present in human Ear?
Answer :- 6
How many types of teeth present in human body?
Answer :- 4 type of teeth in human Incisors, Canines , Premolars , Molars
Which gland controls the blood pressure in our body ?
Answer :- Adrenal gland
How many temporary teeth in human body?
Answer :- 20
Which gland in human body is both exocrine and endocrine gland?
Answer :- Pancreas
Yellow colour of Human urine is due to presence of which pigment?
Answer :- Urochrome
How many ribs present in human body?
Answer :- 24. (12 Pair)
Our bones and teeth are generally made of which Substance ?
Answer :- Tricalcium phosphate
What is the name of male sex hormone?
Answer :- Testosterone
Which Disease is caused by deficiency of Iodine ?
Answer :- Goitre
Name the pigment which gives colour to skin?
Answer :- Melanin
How many bones are present in new born baby?
answer :- 300 bones
What is the SI unit for measuring intensity of sound or noise?
Answer :- Decibel
Which type of mirror used in automobiles to see the traffic on the rear side?
Answer :- Convex Mirror
What is the SI unit of electrical resistance?
Answer :- Ohm
At what temprature, the numerical values on Celsius and Fahrenheit scales becomes equal?
Answer :- -40°C
What is the major constituent Substance of Gobar gas?
Answer :- Methane
Which endocrine gland is also known master gland?
Answer :- Pituitary gland
What is the Functional unit of kidney ?
Answer :- Nephron
What is the number of chromosomes in a normal human body cell ?
Answer :- 46 Chromosomes (23 Pairs)
As a result of digestion in our body protein gets converted into ?
Answer :- Amino Acid
Which is the richest source of “Vitamin A” ?
Answer :- Carrot
Which vitamin do we get from the Sunlight?
Answer :- Vitamin D
What is the study of flowers called ?
Answer :- Anthology
Which part of our brain is responsible for controlling the balance of our body ?
Answer :- Cerebellum
Which gland secretes sex hormones in the human body?
Answer :- adrenal gland
By which instrument is the growth of stems measured?
Answer :- oxymeter
Which metal is present in chlorophyll?
Answer :- Magnesium
Due to the deficiency of which element black hut disease occurs in potato ?
Answer :- Oxygen
Which is called the ” suicide bag of the cell” ?
Answer :- Lysosome
Sex hormones are secreted by which gland in the human body?
Answer :- Adrenal gland
What controls the amount of light entering our eyes?
Answwr :- Iris
Which is the busiest organ of the human body ?
Answer :- Heart
Read More :-