Question # 1

Member of the same species living in the same place at same time. whihc level they forms.

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Habitat

Biosphere

Population

Community

When a plant was kept in darkness for many days, many days, its leaves turned yellow. Why?

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Leaves could not get oxygen and so there was no photosynthesis

Leaves could not get light and so there was no respiration

Leaves could not get oxygen and so there was no respiration

Leaves could not get light and so there was no photosynthesis

Activation energy is required to:

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Activation enzyme

Start a reaction

Speed up a reaction

None

Data are of ____________ types.

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1

2

3

4

Scientific name of pea plant is.

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Dilbergia Sisso

Pisum indicum

Homosaplens

pisum Sativum

Dietary deficiency of ..................... is quite common.

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Vitamin A

Vitamin B

Vitamin D

Vitamin E

In 2010 the population of Humans in Pakistanis.

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173.5 million persons

17 million persons

19.5 milion persons

10.07 million persons

Pepsin works at the PH of ............... .

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1

2

3

4

The percentage of inorganic salts and in the plasma is:

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0.6

0.7

0.8

0.9

Level of organizatin that is less definite in Plants is.

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Organism level

Organ system level

Tissue level

Organ level

According to pressure flow mechanism which is the actual force behind the movement of food in phloem?

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Drop in the pressure at the sink end

Gain of water at the sink end

Osmotic pressure

All of these

Plasma contains .................. % water.

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10%

7%

90%

2%

Group of similar organism that interbreed and produce fertile off springs is ____________

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Genus

Species

Phyla

Order

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