Question # 1

The tentative explanation of observation.

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Hypothesis

Law

Theory

Deduction

Tay-Sach's disease is because of absence of an enzyme, That is involved in catabolism of.

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Polysaccharides

Oligosaccharides

Lipids

Proteins

Which is correct order of parts of air passage ways in man.

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Nostrils, Nasal cavity, Pharynx, Larynx

Nasal cavity, Nostrils, Pharynx, Larynx

Nasal cavity, Pharynx, Nostrils, Larynx

Nostrils, Pharynx, Larynx, Nasal cavity

_____ is more important regulator of breathing process.

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Oxygen

Carbon di oxide

Myoglobin

Hemoglobin

Excretory organ in annelid are.

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Nephridia

Nephron

Flame cells

Malpighian tubule

A single mycelium may produce upto a kilometers of new hyphae in only.

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One day

Three days

Five days

Fifteen days

The partly digested food in cockroach is temporarily stored in.

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Crop

Gizzard

Rectum

Stomach

Which of the following is not found in all bacteria is

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Cell membrane

A nucleoid

Flygella

None of these

A plant requires potassium for

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Synthesizing proteins

Synthesizing chlorophyll

opening and closing of stomata

None of these

Arachis hypogeal to family

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solananceae

Fabaceae

Rosaceae

Poaceae

Each mesophyll cell of leaf has chloroplast about.

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10-20

20-80

20-100

100-110

Water is stored for use during the period of drought in fleshy stems of

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Cacti

Euphoribia

Both a & b

None of these

Unequal separation of chromosomes is called.

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Disjunction

Separation

Non disjunction

Metastasis

A pair of kidneys, consist of millions of functional units called.

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Nephrons

Dendrons

Neurons

Flatrons

In spermatophytes important step in land adaptation is the evolution.

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Seed coat

Fruit

Pollen tube

Flower

Sperm are formed in.

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Vas deferens

Collecting ducts

Seminiferous tubules

Epididymis

Some individuals leave behind more progeny than others and teh rate at which they do so is affected by their inherited characteristics. This is called.

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Non random mating

Selection

Migration

Mutation

A probe is a single stranded nucleotide sequence that will hybridize in to certain piece of.

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Amino acids

DNA

Carbohydrate

RNA

DNA was discovered in

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1869

1864

1961

1972

Reptiles and birds are.

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Viviparous

Ovlparous

Marsupial

Ovoviviparous

The most concentrated external environment is termed as.

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Hypotonic

Hypertonic

Osmotic

Isotonic

Zoos and botanical gardens are to save species whose extinction is.

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Parmanent

dominant

Imminent

Prominent

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