Question # 1

The endangered plants of Pakistan include:

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Taxus bacceta

Pinus geradiana

Juniperus

All of above

How many kinds of organisms inhabit the earth?

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1 million

5 million

10 million

10 billion

Which of the following plastids have chlorophyll and help in photosynthesis?

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Chloroplasts

Leucoplast

Chromoplasts

All of these

When we study the feeding relation emong animals of diffrent species of a forest.at which level of organization we are.

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Individual

Population

Community

Biosphere

Find the correct statement.

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Homologous chromosomes form pairs during mitosis

Chromosomes do not duplicate in the interphase preceding meiosis-I

Homologous chromosomes form pairs during mitosis but not mitosis

Spindles are not required during meiosis

It is a group of related orders:

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Genus

Class

Species

Family

Endoplasmic Reticulum is of .................. types.

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1

2

3

4

The light reactions of photosynthesis take place on the _____________ of chloroplasts.

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Stroma

Thylakoid membrane

Lumen

Sacs

Almost all enzymes are:

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Carbohydrates

Fatty acids

Proteins

Vitamins

Which is composed of only protein?

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Viruses

Prions

Viroids

B and C

Mendal experimented on ____________ plants.

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Potato

Pea

Rose

Pine

Which of the following does not occur in the oral cavity?

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Lubrication of the food

Beginning of protein digestion

Breaking the food into small fragments

All of the above do occur in the oral cavity

Biodiversity is richer in :

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Tropics

Temperate regions

Polar regions

Desert

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