Question # 1

Which of the following is the abiotic part of ecosystems?

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Grass

Goat

Lion

Soil

Adenine always pairs with:

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thymine

guanine

cytosine

uracil

Chromatin material is made of.

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DNA

Protein

RNA

DNA and protein

Which is the correct order for the path taken by urine after it leaves the kidneys?

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Urethra, bladder, ureters

Bladder, ureters, urethra

Ureters, bladder , urethra

Bladder, urethra, urelers

During exercise or other hard physical works the breathing rate may increase up to.

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30-40 times per minute

50-60 times per minute

60-70 times per minute

70-80 times per minute

The byproducts of Photosynthesis is.

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Carbondioxide

Oxygen

Nitrogen

Ammonia

Scientists are able to cut and paste the DNA of organism in:

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1944

1970

1990

2002

How many carciogens are present in cigarette smoke?

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40

50

60

70

The materials flow forms one trophic level to the next by means of:

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food chains

food webs

energy pyramids

both A and B

An example of Rhizome is:

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Onion

Garlic

Ginger

Potato

Human skeleton contain number of bones:

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106

206

306

406

Percentage of CO₂ in exhaled are during breathing is:

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16%

4%

79%

0.04%

Every ripened ovule is called:

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Leaves

Flower

Seed

Fruit

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