100 important Biology Questions For RRB and SSC Exams

100 important Biology Questions For RRB and SSC Exams

Question Answer
What is contained in Chlorophyll ? Magnesium
From which part of the plant is turmeric obtained? Stem
Lacrymal glands are situated in the     ? Eye Orbit
The specific role of Vitamin K is in the synthesis of Prothrombin
Which Part of plant is important for the life cycle of plant? Flower
Increased RBC’s in the blood leads to a condition called     ? Polycythemia
Name the hormone that regulates the amount of glucose in the blood . Insulin
The human faces is yellow in colour due to the presence of a pigment

called     ?

Which enzyme is found in human saliva? Ptyalin
Hansen’s disease is also known as     ? Leprosy
What is systolic and diastolic pressure in a healthy man? 120mm & 80mm
Which is considered as the strongest natural fibre? Silk
The deficiency of which leads to dental caries? Fluorine
Companion cells are unique to     ? Angiosperms
The smallest bone in the human body is     ? Stapes
A person feel fatigued due to depositon of which acid in their muscles? Lactic Acid
How many bones are present in human skull? 22
Which lobe of human brain is associated with hearing? Temporal Lobe
Upper most layer of skin is called     ? Epidermis
Motor skills are associated with which part of the brain? Frontal Lobes
Blood group was discovered by whom? Landsteiner
The ph value of human blood is ? 7.40
Name the largest gland in the human body? Liver
What is the chemical name of a substance which kills rats? White Phosphorus
The metal present in the haemoglobin is     . Iron
Which mosquito is the carrier of Zika virus? Aedes
Name the gas used for making vegetable ghee? Hydrogen
Which part of brain is centre of thirst, hunger and sleep? Hypothalamus
Which regulates the quantum of light entering the human eye? Iris
DNA stands for   . Deoxyribonucleic Acid
What percentage of water is lost during transpiration? 99%
Pyramid of energy is     ? Always upright
Edward Jenner is related with which disease? Small pox
The hormone used as an oral contraceptive is     . Progesterone
Which vitamin is considered to be a hormone? Vitamin D
The process of photosynthesis involves conversion of what? Solar energy into

chemical energy

Who explained about the blood circulation for the first time? William Harvey
Dog bite can cause rabies. Which other animal can also cause rabies? Bat
Saliva helps in the digestion of which thing? Starch
Which is the sweetest sugar? Fructose
Which enzyme is present in all members of the animal kingdom except


Which is known as graveyard of RBC’s ? Spleen
Which disease is caused by the bite of a mad dog? Hydrophobia
What is the normal cholesterol level in human blood? 180-200 mg/dL



Who was the first to isolate Gene? Dr. Hargobind Khurana
Which cell organelles function as the power house of a living cell? Mitochondria
Nobel Prize winning scientist James D. Watson is known for his work in which


What is the Branch of science which deals with the study of skin of man? Dermatology
Which test helps in diagnosis of cancer? Biopsy Test
Which major chemical compound found in human kidney stones? Calcium oxalate
Sex determination of child is done by whose chromosome? Father
What is the name of first clones sheep ? Dolly
What is known as ‘kitchen of cell’? Chloroplast
Enlargment of which gland takes place due to deficiency of iodine? Thyroid
Which part of human brain is the regulating centre for swallowing and


Medulla Oblongata
What are Bryophytes ? Amphibious
The number of Chromosomes in the human gene is     . 46
Polio is caused by whom? Virus
Ductless glands are known as     ? Endocrine glands
The first vaccine injected into a just born baby is     . BCG
Which are phagocytes in liver ? Kupffer cells
Which gland disapear during old age? Thymus
The study of Dendrology is associated with     ? Trees
Theory of natural selection was proposed by     . Charles Darwin
By which doctor was the first successful heart transplant in India performed? Dr. Venugopal
The food poisoning is caused by     . Clostrideam boutulium
Which acid is found in ‘Tomato’ ? Oxalic Acid
Haematopoiesis take place in     ? Bone marrow
Which part of human brain is affected by alcohol? Cerebellum
Ascariasis is caused by     ? Round Worm
Turpentine oil is obtained from     ? Pinus
Which salt is found in bone in largest amount? Calcium Phosphate
Genes are made by     ? Polynucleotide
Which disease is known as ‘silent killer’? High Blood pressure
By whom was oral polio vaccine discovered? Jonas Salk
The compound used in anti-malarial drug is     ? Chloroquine
Which is responsible for transport of food and other substances in plants? Phloem
BCG vaccination (Bacillus Calmette Guerine) is injected to get immunity

from   ?

First vaccine produced by bio-technology was used against which virus? Hepatitis-B
Alcoholic drink contains     ? Ethyl Alcohol
Xerophthalmia is a disease caused by lack of which vitamin? Vitamin A
Which is responsible for the process of cell division ? Mitosis
What is known as ‘Suicidal bags of cell’? Lysosome
The plants, which grow under water stress conditions are called_? Xerophytes
Which metal is present in Insulin? Zinc
Most of the red, blue and purple colours of plants are due to a pigment

called   ?

The filtering of blood through an artificial kidney is called ? Dialysis
Animals store glucose in the form of ? Glycogen
Who invented penicillin? Alexander Fleming
The longest and largest bone in the human body is ? Femur


Which is known as master gland in man? Pituitary gland
Which vitamin is essential for the coagulation of blood? Vitamin K
Which insect spreads kala-azar? Sand Fly
Name the smallest functional unit of the kidney? Nephron
What is the smallest structural and functional unit of nervous system? Neuron
Which animal have no blood but they respire? Hydra
What is the Dental formula of man? 2123/2123
The biogas used for cooking is a mixture of     ? Methane &


Which plant yeilds biodiesel or biofuel? Jatropha Curcas
The most serious air pollutant causing health hazard is     ? Sulphur dioxide

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