All the bones of the body make a frame called?

A. Skelton
B. Tissue
C. Skull
D. None of these

__________ Protect us from diseases?

A. Vitamins
B. Minerals
C. Carbohydrates
D. None of these

Which bird weighs less than a penny?

A. Goldcrest
B. Weebill
C. Hummingbird
D. None of these

Permanent hardness of water is due to the presence of __________?

A. Sodium bicarbonate
B. Calcium sulfate
C. Calcium bicarbonate
D. None of these

Proteins are made up of _________?

A. Polynucleotide
B. Polypeptide
C. Oxyacetylene
D. None of these

The Shape of earth is _________?

A. Elliptical
B. Oblate spheroid
C. Oval
D. Spherical

Reflex actions in head region are under the control of___________?

A. Brain
B. Spinal cord
C. Both a & b
D. Non of the above

A shooting star is _________?

A. Sun
B. A comet
C. A meteor
D. An steroid

Chromosomes are made up of __________ ?

A. Dna only
B. Dna and rna
C. Proteins only
D. Dna and proteins

The principal constituent of the atmosphere of the Earth is?

A. Oxygen
B. Carbon
C. Hydrogen
D. Nitrogen