10 common bio question

Question 1

Which part of human brain is affected by alcohol?

  Cerebrum

  Cerebellum

  Medulla Oblongata

  Corpus Callosum

It's 'Cerebellum '
The cerebellum is an area sensitive to alcohol and may result in permanent damage after chronic consumption of large amounts ofalcohol.

Question 2

The richest source of vitamin D is ______.

  milk

  cheese

  cod liver oil

  spinach

It's 'cod liver oil '
Cod liver oil is a nutritional supplement derived from liver of cod fish. It contains vitamin A and vitamin D.

Question 3

Maleria is caused by _____.

  Entamoeba histolytica

  Leishmania

  Clostridium

  Plasmodium

It's 'Plasmodium '
Plasmodium, commonly known as the malaria parasite is a large genus of parasitic protozoa.Infection with plasmodia is known as malaria.

Question 4

Age of fishes was known as _______.

  Devonian

  Ordovician

  Crustaceous

  Silurian

It's 'Devonian '
The Devonian is known as the Age of Fishes. It is famous for the thousands of species of fish that developed in Devonian seas.

Question 5

Which one of the following is the sweetest natural sugar ?

  Lactose

  Glucose

  Sucrose

  Fructose

It's 'Fructose '
Fructoseis a simple ketonic monosaccharide found in many plants, where it is often bonded to glucose to form the disaccharide sucrose. Pure, dry fructose is a very sweet, white, odorless, crystalline solid and is the most water-soluble of all the sugars.

Question 6

The acid present in Vinegar is ______.

  Citric Acid

  Acetic Acid

  Oxalic Acid

  Malic Acid

It's 'Acetic Acid '
Vinegaris a liquid consisting mainly of acetic acid (CH₃COOH) and water.The acetic acid is produced by the fermentation of ethanol by acetic acid bacteria.

Question 7

The important sugar in honey is _______.

  Lactose

  Fructose

  Maltose

  Sucrose

It's 'Fructose '
Fructoseis found in honey, tree and vine fruits, flowers, berries, and most root vegetables.

Question 8

The biomass available for consumption by the herbivores and the decomposers is called______.

  Gross primary productivity

  Net primary productivity

  Secondary productivity

  Standing crop

It's 'Net primary productivity '
Net primary production is the rate at which all the plants in an ecosystem produce net useful chemical energy. It is equal to the difference betweenthe rate at which the plants in an ecosystem produce useful chemical energy (GPP) and the rate at which they use some of that energy during respiration.

Question 9

With which deficiency Xerophthalmia is caused?

  Vitamin A

  Vitamin B

  Vitamin C

  Vitamin D

It's 'Vitamin A '
Xerophthalmiacaused by a severe Vitamin A deficiency is described by pathologic dryness of the conjunctiva and cornea. It is a medical condition in which the eye fails to produce tears.

Question 10

Plants absorb most part of water needed by them through their ______.

  Embryonic zone

  Growing point

  Root hairs

  Zone of elongation

It's 'Root hairs '
Root hairs form an important surface over which plants absorb most of their water and nutrients.