Question # 1

What is the primary pigment responsibel for capturing sunlight in chloroplasts.

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Carotene

Chlorophyll

Melanin

Haemoglobin

Whcih of the following statemetns best distinguishes hypotheses from theories in science?

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Theories are hypotheses that have been proven true

Theories are based on limited data while hypotheses are based on wide ragne of data

Theories are uncertain while hypotheses are certain

Theories are educated guess while hypotheses are widely accepted explanation of natrual phenomenon

Viruses are assigned to the kingdom.

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Plantae

Fungi

Protista

Not included in any kingdom

What are the roles of stomata in plants.

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Gaseous exchange

Water absorption

Transpiration

Nutrient uptake

Which of the following character is not related to Animalia?

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Eukaryotic

Autotrophs

Multicellular

Heterotrophs

Which of the followign are ways hydrophytes adapt to osmotic conditions.

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Developing deep roots

Developing sunken stomata

Producing large leaves

Having thick cuticle

What is true about the optimun pH values of the followign enzyes of digestive system.

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Both work at high pH

Both work at low pH

Pepsin works at low pH while trypsin works at high pH

Pepsin works at high pH while trypsin works at low pH

Which is not a function of carbohydrates.

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Providing energy

Forming the primary structure of cell membranes

Breaking down into glucose

Serving as building blocks for complex carbohydrates

Which branch of Biiology focuses on the study of the structure and function of cells?

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Ecology

Cytology

Microbiology

Histology

What is the primary function of the root system is plants.

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Absorbing water

Photosynthesis

Gas exchange

Reproduction

The epithelial tissue in the stomach wall is responsbible for producing

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Mucus

Pepsinogen

Hydrochloric acid

All of these

What roles does maganesium play in plants.

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Aids in water transport

Is a component of chlorophyII

Promotes early root formation

Involved in enzyme functions

What is the primary function of the xylem tissue in a leaf.

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To transport sugars to othe rparts

To control the opening and closing of stomata

To transport water to parts of leaf

To synthesize chlorophyII

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