Question # 1

Which of the following statement about Porifera is not true

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There are respiratory and circulatory organs

Pores are present in the body wall

Water enters the body through ostia

Water leaves the body through osculum

Which of the following are example of divergent evolution

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Wings of bat

Wings of birds

Forelimbs of man

Wings of insects

In frog the exchange of gases takes place through

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Lungs

Skin

Buccal chamber

All of above

In planarians the exchange of materials takes place by

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Blood circulatory system

Flame cells

No special transport system

None

If the non-protein part is covalently bonded it is known aas

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Co-enzyme

Activator

Prosthetic group

Product

Animals from annelids to chordate are

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Acoelomates

Pseudocoelomates

Coelomates

None

Which of the following substances provide energy to the body

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Carbohydrates

Fats

Amino acids

All of above

The basic unit of biological information is

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Alleles

Nucleus

Cytoplasm

Genes

Which is not a macro molecule

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Starch

Glycogen

Proteins

CO₂

In enzymatic reactions the reactant is called

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Product

Substrate

Catalysis

None

The productivity can be indicated by

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Consumption of CO₂

Evolution of CO₂

Both A and B

None of these

In which of the phase chromosomes are not visible

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Prophase

Metaphase

Anaphase

Teleophase

The frog has number of chromosomes

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46

13

26

40

Organisms which are very similar and have a tendency of inbreeding are called

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Species

Gene pool

Community

Niche

Primary wall is composed of

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Cellulose

Cutin

Lignin

Waxes

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