Question # 1

Total chemicals in tobacco smoke are:

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1000

2000

3000

4000

Short underground stems surrounded by thick fleshy leaves that contain stored food are called:

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stem tubers

suckers

corms

bulbs

Copies of chromatids of chromosomes are made through the process called.

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Inheritance

Transcription

Translation

Replication

The base of food chain is always formed by:

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Producers

Consumers

Decomposrs

Heterotrophs

Human Insulin was prepared by bacteria first time.

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2002

1990

1970

1978

Habitat destruction can result in a loss of:

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Species

Population

Community

Ecosystem

R-3 means.

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Less use

Reuse

Recycle

Refuse

Which one of the following is not a temporary parasite?

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Mosquito

Virus

Leech

Bed bug

In man the correct passage of air is:

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nostrils, nasal, cavit, pharynx, trachea, arynxl, bronchi, bronchioles alveolar,duct, aleoli

nostrils, nasal cavity, Pharynx, larynx , bronchi, trachea , bronchioles , alveolar duct, alveoli

Notrils , nasal, cavity, larynx, pharynx, trachea,bronchioles, alveolar, duct alveoli,

Nasal cavity, nostrils, larynx, pharynx, alveoli , trachea bronchi, bronchioles ,alveolar dict ,

Which is not an advantage of grafting?

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The graft is identical to the parent plant.

Grafting allows the propagation of seedless fruits.

The graft combines the characteristics of two plants.

Grafting may allow for the faster production of desirable fruits.

In the structure of DNA Adenine of one nucleotide pairs with which of the nitrogenous base opposite nucleotide:

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Guanine

Cytosine

Thymine

Uracil

The example muciliage excreting plant is:

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keekar

rubber

conifers

lady finger

The cardiotonic known as digitalis, is obtained from a plant.

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Accacia

Barassica

Mimose

Fox glove

Cartilage is made up of:

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Matrix

Collagen

Chondrocytes

Ligaments

The number of axons present in sensory neuron is:

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one

two

three

many

The utilization of nitrates by organisms is called.

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Nitrification

Ammonification

Assimilation

Denitrification

Which drugs belong to hallucinogens.

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Morphine

Codeine

Heroin

Mescaline

The hard outer layer of a bone is called;

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Bone marrow

Hyoid bone

Spongy bone

Compact bone

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