MEDIUM
12th CBSE
IMPORTANT
Earn 100

Why are lichens called industrial pollution indicators?

Important Questions on Model Question Papers 1

HARD
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 18 - Model Question Papers 1>MODEL QUESTION PAPER>Q 2
Why are 'colour blindness' and 'thalassemia' categorised as Mendelian disorders?
MEDIUM
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 18 - Model Question Papers 1>MODEL QUESTION PAPER>Q 3
Cite an example of a classic case where a disease was spread by a person who was a cook by profession. How did it spread?
MEDIUM
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 18 - Model Question Papers 1>MODEL QUESTION PAPER>Q 4
How are 'sticky ends' formed in a DNA molecule?
MEDIUM
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 18 - Model Question Papers 1>MODEL QUESTION PAPER>Q 5
Write the scientific name of the plant which exhibits unusual flowering phenomenon by flowering once in twelve years.
MEDIUM
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 18 - Model Question Papers 1>MODEL QUESTION PAPER>Q 6

The distribution of some plants is restricted because of the special need for water to complete their life cycle. Give a specific reason for this requirement along with an example. 

MEDIUM
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 18 - Model Question Papers 1>MODEL QUESTION PAPER>Q 6
Name a human organ that requires a lower temperature than the normal body temperature and explain why?
HARD
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 18 - Model Question Papers 1>MODEL QUESTION PAPER>Q 7
How did Morgan and his group attribute the terms 'linkage' and 'recombination' with respect to position of genes on a chromosome?
MEDIUM
12th CBSE
IMPORTANT
Xam Idea Biology>Chapter 18 - Model Question Papers 1>MODEL QUESTION PAPER>Q 8
Write the kind of professional and medical help that is available for the prevention and control of alcohol and drug abuse among adolescents.