Question # 1

The long day plant produce flowers in the presence of photochrome.

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P-660

P-770

P-730

P-600

Hemophilia is

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X linked dominant trait

X linked recessive trait

Sex influenced trait

Sex limited trait

Pairing of homologous chromosomes for tetrad formation starts at.

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Leptotene

Zygotene

Diplotene

Pachytene

Endosymbiont hypothesis explains origin of.

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cell

Prokaryotic cell

Eukaryotic cell

Ribosome

The most important hormone in initiating and maintaning lacation after birth is:

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Estrogen

FSH

Prolatin

Oxytocin

Ecosystem present on land or soil is called.

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Terrestrial

Atmosphere

Lithosphere

Both a and c

Endocrine gland secrete

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Harmones

Salts

Enzymes

Mucous

The genes found in a breeding population constitute.

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Genotype

Gene pool

Genome

Gene frequency

Which one of the given is non sense codon.

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AUG

ACU

GAU

UAA

The wall of trachea(windpipe) and bronchi of man is fernished with a series of incomplete:

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Cartilagenous plates

Chitinous rings

Cartilaginous rings

Muscular rings

Which of the following is the most fragile ecosystem.

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Grass land

Wood land

Tundra

Savanna

Action of the venus fly trap is

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Nyctinasty

Photonasty

Haptonasty

Thermonasty

Desert ecosystem of Bhakkar and Mian wali is called.

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Thal

Thar

Cholistan

Rohi

Shape of the plant cell does not change greatly compared with an animal cell because it is surrounded by a rigid

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Cell membrane

Capsule

Sheath

Cell wall

Secretin is a hormone produced by

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Liver

Gut

Adrenals

Pancreas

Photoperiod effects flowering when shoot meristems start producing.

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Floral buds

Leaves

Lateral buds

Branches

PCR takes its name from

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RNA polymerase

DNA polymerase

DNA ligase

Endonuclease

The stage in which Lichens are just like crumpled leaves attached to one point.

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Moss stage

Crustose Lichen stage

Follage Lichen stage

Shrub stage

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