Gaseous exchange in birds occurs at level of_______________?

A: Alveoli

B: Air sacs

C: Bronchi

D: Parabronchi

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Parabronchi

Pollen grains in pinus have __________ for dispersal through wind?

A: Flagella

B: Cilia

C: Wings

D: Feathers

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Wings

The single healthy megaspore retained within the megasporangium germinates to form an egg containing female gaemtophyte called______________?

A: Ovule

B: Seed

C: Fruit

D: Embroyo sac

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Embroyo sac

Alternation of generations is absent in___________?

A: Hydration

B: Obelia

C: Jelly fish

D: Physalia

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Hydration

Double fertilization is feature of____________?

A: Ferns

B: Whisk ferns

C: Gymnosperms

D: Angiosperms

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Angiosperms

If bile pigments are prevented from leaving digestive tract, then they cause_____________?

A: Hepatitis

B: Jaundice

C: Gall stones

D: Blockage

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Jaundice

Initial pH of food vacuole during digestion in amoeba is____________?

A: 5.3

B: 5.6

C: 7.3

D: 7.6

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5.6

The arrangement of _________ speaks of the division of labour within cell?

A: Molecule

B: Subatomic particles

C: Atoms

D: Organelles

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Organelles

NADH is oxidized by___________?

A: Coenzyme ?

B: Cytochrome b

C: Oxygen

D: Glycolysis

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Coenzyme ?

Salivary glands present in front of ear are___________?

A: Sublingual

B: Submaxillary

C: Submandibular

D: Parotid

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Parotid

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