Which of the following preventive measures is adopted to avoid mental retardation?

• Relatives should not marry each other

• Consumption of drugs and liquors should be avoided by pregnant mothers

• Mother and child, both should be saved from infections diseases

• All of the above

Physical trauma during pregnancy may cause

• mental retardation

• blindness

• deafness

• All of the above

163.

IQ range of morons are in the range of

• 60-90

• 50-75

• 60-80

• 30-50

Aqueous solution of SO₂ is

• acidic

• basic

• neutral

• amphoteric

Other than the nucleus which cellular organelle contains DNA?

• Ribosome

• Golgi complex

• Mitochondria

• Lysosome

Which is the vestigial organ in a man?

• Pinna muscles

• Pinna

• Ileum

• Teeth

Which one of the following are acoelomate animals?

• Echinoderms

• Annelids

• Arthropods

• Platyhelminthes

Which of the following is not a protein?

• Heparin

• Keratin

• Fibroin

• Albumin

Which type of centrum is found in the vertebra of mammals?

• Amphiplaytan

• Heterocoelous

• Procoelous

• Amphicoelous

In the absence of light, what will increase?

• Water uptake

• Elongation of internodes

• Uptake of mineral salts

• Extension of leaf lamina