Biology Practice Questions Set 12

JavaScript isn't enabled in your browser, so this file can't be opened. Enable and reload.

For India's Top Government Exams

Email *

Which one among the following elements/ions is essential in small quantities for the development of healthy teeth but causes a mottling of the teeth if consumed in higher quantities?
*

1 point

Iron

Chloride

Fluoride

Potassium

Which one among the following group of items contains only biodegradable items?
*

1 point

Wood, Grass, Plastic

Wood, Grass, Leather

Fruit peels, Lime juice, China clay cup

Lime juice, Grass, Polystyrene cup

Why do you feel cool under a tree but not so under a tin shed on a sunny day?
*

1 point

The greenness of the tree gives the cool feeling

Photosynthesis absorbs heat

The leaves convert water vapors into the water which is a heat-absorbing process

The leaves give out water which vapourises absorbing some heat as latent heat

Which one among the following is not correct about Down’s syndrome?
*

1 point

It is a genetic disorder

The affected individual has early aging

The affected person has mental retardation

The affected person has furrowed tongue with open mouth

When we eat something we like, our mouth water. This is actually not water but fluid secreted from ___
*

1 point

nasal glands

oval epithelium

salivary glands

tongue

In dry regions, the leaf size of a tree becomes smaller. This is ___ *

1 point

to reduce metabolism

to reduce transpiration

to maintain natural growth

to protect plants from animals

Bats can fly in the dark because they
*

1 point

have strong wings

have sharp eyes

produce ultrasonic waves

are nocturnal

A dog bite can cause rabies. Which among the following other animals can also cause rabies?
*

1 point

Donkey

Bats

Horse

Crocodile

Rainwater collected after 30 to 40 minutes of rain is not suitable for drinking because it
*

1 point

contains bacteria and dirt

contains dissolved toxic chemicals

is deficient in minerals

is acidic

White blood cells act
*

1 point

as a defense against infection

as the source of energy

as a clotting agent

as a medium for oxygen transport from lungs to tissues

Send me a copy of my responses.

Submit

Clear form

reCAPTCHA

Privacy Terms

This content is neither created nor endorsed by Google. Report Abuse - Terms of Service - Privacy Policy

Forms