Biology MCQs

A: Cockroach

B: Snail

C: Earthworm

D: Star fish

A: 33 vertebrae

B: 33 pairs of vertebrae

C: 25 vertebrae

D: 31 vertebrae

A: Reptiles

B: Aves

C: Amphibians

D: Mammals.

A: The major event in it is accumulation of lactic aci

B: Lactic acid accumulation turns pH in acidic range leading to muscle ach

C: Ionic imbalance may also cause it.

D: All of these

A: Accunulation of rigid proteins molecules in sarcoplam.

B: Unavailability of ATP, which is necessary to break the link between actin and myosin.

C: Decrease in body temperature after death.

D: Death of tissue due to unavailability of O2.

A: It permits gaseous exchange

B: It contains joints, for the same purpose as present in human skeletal system

C: It provides muscle attachment

D: Like all the other types of exoskeleton, they lack sensation

A: An enzyme that digest endocuticle during an arthropodal ecdysis

B: A newly formed exoskeleton in authropods

C: A hormone that regulates moulting in arthropods

D: A process that involves moulting

A: Ectoderm.

B: Endoderm.

C: Mesoderm.

D: All of these

A: H- zone

B: M- Line

C: Z- Line

D: A band

A: Earthworm

B: Round worm

C: Tape worm

D: Pin worm