Question # 1

Large number of sotmata are found on.... side of leaf.

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Lower

Upper

Middle

None of these

Antibodies are produced by

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Pathogen

Infection

Lymphocyte

None of these

While preparing pickles, which is not used as preserating agent.

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Honey

Salt

Pepper

Vinegar

Whcih of the following has double covalent bound.

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Br2

CO2

HCl

N2

What type of wave does not need matter to travel through.

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Mechaical

Electromagnetic

Sound

Transverse

Entry and growth of pathogen into our body is called.

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Pathogen

Infection

Immunity

None of these

The main function of ......... tissue is to store food in plants.

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Xylem

Stometa

Phloem

Parenchyma

Microorganism taht cause diseases in humna body are called.

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Infection

Pathogen

Antigen

Phagocytosis

A piece of iron is kept in open air for 5 days. A film of corrosion formed over it is.

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Iron oxide

Iron sulphide

Iron Chloride

Iron Hydride

Which one of the following statements is correct.

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1 m = 1000 km

m/s is the unit of displacement.

N is the unit of force

1 h = 60 s

An example of contact force.

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Electrostatic force

Muscular force

gravity

Magnetic force

Compustion is a.

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Physical Change

Chemical change

Thermal change

None of these

The organism that live inside the body of host are called.

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Ectoparasite

Endoparasite

Host

Pathogen

What is required for photosynthesis in addition to light.

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Oxygen and carbon dioxide

Oxygen and water

Carbon di oxide and water

Notrogen and water

Water and dissolved salts ae conducted from roots to leaves by.

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Root haris

Xylem

Phloem

Stomata

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