Question # 1

"The number of plants in desert are scarce". This could be the statement of

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Biogeographist

taxonomist

Social biologist

Palacontologist

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

Which description of xylem is correct.

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A cell used for absorption

A tissue used for trasnport

An organ used for transport

An organ system used for conduction

Enzyme pepsin in the stomach has an optimum pH of about

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3

2

4

5

What is the correct experiment to known that Plasmodium destroys blood cells?

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Examine the blood of a single healthy person

Examine the blood of some healthy and also some infected persons

Allow mosquito to bite a ehalthy person and examine his blood

Examine the blood of a single infected person

Prosthetic groups are.

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Required by all enzymes

Protins in nature

Tightly bound to enzyme

Loosely attached with enzymes

The kingdom which contains eukaryotic autotrophic organism is.

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Protista

Fungi

Monera

None of them

What is binomial nomenclature.

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Namign system in which each organism is given two part name

Classifying organismsm on seven levels

Naming system developed by aristotle

Grouping animals based on their habitat

Which organ system is responsible for circulating blood in the human body.

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Digestive

Circulatory

Nervous

Respiratory

The chloroplast functions in

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ATP Synthesis

Photosynthesis

protein Synthesis

DNA replication

When the rate of photosynthesis become equal to that rate of respiration in the plant body. which of the following pattern of gaseous exchange occurs between plaant and its environment.

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Carbon dioxide is absorbed, and oxygen is released

Oxygen is absorbed, and carbon dioxide is released

Neither carbon dioxide nor oxygen are absorbed

Both carbon dioxide andoxygen are absorbed

Which of the following plant nutrints is requried in large amount.

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Iron

Potassium

Zinc

Boron

Viruses are assigned to the kingdom.

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Plantae

Fungi

Protista

Not included in any kingdom

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