Question # 1

The factory of ribosome is the

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Chloroplast

Nucleolus

Mitochondria

Vacuole

Coral reefs are mostly formed. of.

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Calcium carbonate

Silica

Chitin

Lignin

A group of ribosome attached to mRNA is known as

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Lysosome

Peroxisome

Poly some

Glyoxisome

The structure in the mouth that prevents food from entering the nasal cavity is

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Epiglottis

Soft palate

Tongue

Pharynx

The partly digested food in cockroach is temporarily stored in.

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Crop

Gizzard

Rectum

Stomach

In earthworm exchange of gases mainly takes place through.

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Gills

Lungs

Skin

Ostla

The rhizome in adiantum is protected by.

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Rementa

Fronds

Stomium

Stipe

The maximum depth of roots of prospis is.

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40 meters

50 meters

60 meters

70 meters

the hind limb of birds is modified for.

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Walking

Perching

Running

Flying

In human body percentage of nitrogen accounts for.

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1%

2%

3%

10%

Which of the following is a lipid

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Chitin

Rubber

Starch

Sucrose

The plantigrade animals used to walk on their

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Digits

Tips of toes

soles

Belly

In sickle cell anemia disease, a single thymine is replaced with an adenine in the DNA that codes for.

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Valine

Glycine

Histidine

Glutamic acid

Only 30% of the earth is dry land the remainder being covered with

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Water

Air

Trees

Grass

Pinus wallichiana pinus roxbugil Abies pindrow picea smithiana Cederous deodara are plants of

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Coniferous alpine and boreal forests

Temperate deciduous forests

Tropical rain forests

Grassland ecosystem

Perhaps the most fragile of all the biomes, because of its short growing season is.

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Tundra

Desert

Grass land

Temperate deciduous forest

Primer for PCR contains about.

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5 bases

10-20 bases

30 bases

40 bases

Dialysis cleans the blood either by

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Passing it through an artificial kidney

Filtering it within abdomen

Removing the whole blood from body

Both a&b

Every gene starts with initiation codon AUG which encodes for the amino acid.

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Lysine

Serine

Proline

Methionine

Movement of rearrangement of the cells in the embryo is called.

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Cleavage

Gastrulation

Fertilization

Organogenesis

Eukaryotes are thought to have first appeared about____billion years ago

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1.2

1.3

1.4

1.5

Clear cytoplasm produces.

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Muscle cells

Gut

Larval epidermis

Notochord

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