271.

Which of the following is biodegradable?

• Leather belts

• Silver foil

• Iron nails

• Plastic mugs

Fungi that grow on bark are said to be

• Xylophilous

• Saxicolous

• Coprophilous

• Corticolous

Hyperplasia means

• abnormal increase in number of cells

• ab increase in size of a cell

• excessive motility of muscle

• voracious eating

The part of root involved in water absorption is

• zone of elongation

• zone of root cap

• zone of cell division

• zone of root hairs

The virus without capsid but only with nucleic acid is called

• Capsomere

• Nucleoid

• Prion

• Virion

Snakes, Turtle, Lizards and Crocodiles falls under which category of animals?

• Pisces

• Amphibian

• Reptilian

• Aves

With which of the following body organ is 'pace-maker' associated?

• Liver

• Brain

• Heart

• Lungs

Haemoglobin is an important component of .................

• white blood cells

• red blood cells

• plasma

• All options are correct

Anaemia is caused because of deficiency of which of the following?

• Cobalt

• Iron

• Sodium

• Calcium

Which of the following represents the most complex trophic level?

• Community

• Population

• Eco-system

• Species