911. Japanese encephalitis is caused by:

1. Bacteria
2. Virus
3. Parasitic protozoan
4. Fungus

Option “2” is correct
Encephalitis virus is the causing factor of Japanese encephalitis.
912. Pedology is the science related to the study of:

1. Atmosphere
2. Soil
3. Pollutants
4. Seeds

Option “2” is correct
Pedology deals with the study of soil formation, soil morphology, and soil classification.
913. Lexicography is related to:

1. Structure of human body
2. Compilation of dictionary
3. Secret of handwriting
4. Teaching of pictures and models.

Option “2” is correct
Lexicography is related to a glossary of language design, compilation, the evaluation of general dictionaries.
914. On which of the following plant did Gregor Mendal perform his classical experiment?

1. Pea
2. Gram
3. Maize
4. Wheat

Option “1” is correct
The genetic experiment Mendal did with pea plant and published his result in 1865.
915. Dinosaurs were in-

1. Paleozoic era
2. Cenozoic era
3. Mesozoic era
4. Pleistocene era

Option “3” is correct
Dinosaurs lived between 230 and 65 million year ago, in a time known as Mesozoic Era.
916. No pain is felt while cutting the nails because-

1. Nails are made of the material of dead cells in which there is no blood circulation
2. Nails are a useless part of the body
3. Nails are made of calcium phosphate
4. None of these

Option “1” is correct
Nails are usually made up of thick and multiple layers of a type of protein known as ∝ – keratin and are composed of dead tissues. They are devoid of any nerves and blood vessels and therefore we do not feel any pain while the nails are being cut.
917. When does heart rest?

1. Never
2. While sleeping
3. Between two beats
4. While doing yoga

Option “3” is correct
Each ‘heartbeat’ consists of a contraction and relaxing of the heart muscles. When the heart contracts, it pumps blood through the blood vessels. When it relaxes, it draws blood in. It takes rest between relaxation and contraction.
918. In the human body, fats are stored in the –

1. Epidermis
2. Adipocytes
3. Liver
4. Epithelium

Option “2” is correct
Fats are stored in fat cells known as adipocytes.
919. Stem cells which capable of developing into other types of cells come from the –

1. Roots
2. Stem
3. Embryo
4. Flower

Option “3” is correct
Stem cell comes from embryo.
920. The book ‘Genera Plantarium’ was written by –

1. Linnaeus
2. Bentham and Hooker
3. Engler and Prantle
4. Hutchinson

Option “1” is correct
Genera Plantarium’ was written by Carl Linnaeus.
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