CBSE Class 11 Biology MCQs Set A

Choose the most appropriate answer.

Question. They are the remains or impressions of living organisms preserved in rocks:
(a) Tissues  
(b) Fossils  
(c) Calcium 
(d) Statutes

Answer : B

Question. It is the study of fossils and their relationship to the evolution of life on earth:
(a) embryology  
(b) taxonomy  
(c) physiology 
(d) None of these

Answer : D

Question. Man has been able to produce food in greater quantities due to advancement in:
(a) Mathematics  
(b) Space science  
(c) Physics 
(d) Biology

Answer : D

Question. Taxonomy is the study of:
(a) Functions of different parts of organisms 
(b) Naming and classification of organisms
(c) Hereditary characters 
(d) Structure and functions of cells

Answer : B

Question. Anatomy deals with the study of:
(a) Relationship between organisms and their environment 
(b) Development of an organism from a fertilized egg or zygote
(c) Structure and function of molecular components of the cell 
(d) Internal organs of organisms

Answer : D

Question. Pollution of our surroundings in the recent past has resulted because of:
(a) Biological Research  
(b) Rapid industrialization 
(c) Information Technology 
(d) Forestation

Answer : B

Question. The statement made by a scientist, which may be the possible answer to the problem.
(a) Deduction  
(b) Theory 
(c) Hypothesis  
(d) Law

Answer : C

Question. Which of the following is involved in the spread of malaria ?
(a) Bacterium  
(b) Bad Air  
(c) Virus 
(d) Mosquito

Answer : D

Question. People who slept outside in open spaces suffered from malaria more frequently than those who slept indoors, indicates that:
(a) Bad air is involved in the spread of Malaria 
(b) Bacteria are involved in the spread of Malaria
(c) Mosquitoes are involved in the spread of Malaria  
(d) Birds are involved in the spread of Malaria

Answer : C

Question. The entry of Plasmodium into the blood of Man was discovered by:
(a) A. F. A. King   
(b) Laveran  
(c) Ronald Ross  
(d) Grassi

Answer : B

Question. In case of typical attack, malarial patient feels:
(a) Very cold and chilly  
(b) Very Warm 
(c) Sleepy  
(d) Normal

Answer : A

Question. Sexual reproduction of the malaria parasite occurs in :
(a) Man  
(b) Mosquito  
(c) Red blood cells 
(d) Both a and b

Answer : B

Question. Inside human body Plasmodium attacks:
(a) Nerve cells  
(b) Red blood cells  
(c) White blood cells  
(d) Kidney cells

Answer : B

Question. In the life cycle of Plasmodium fusion of gametes and formation of gametes and formation of zygote take place in:
(a) Body of Man
(b) Body of Mosquito
(c) Air
(d) Water

Answer : B

Question. The part of Cinchona plant found suitable for the treatment of Malaria was:
(a) Seeds
(b) Fruits
(c) Leaves
(d) Bark

Answer : D

Question. When sporozoites of Plasmodium pass from the blood to liver cells, they multiply for:
(a) 8 days
(b) 10 days
(c) 12 days
(d) 14 days

Answer : C

Question. Man can now be saved from fatal diseases by using:
(a) Vaccine
(b) Bacteria
(c) Antibiotics
(d) Plasmodium

Answer : A

Question. The word malaria has been derived from the combination of two words which are:
(a) Latin
(b) Italian
(c) Greek
(d) Arabic

Answer : C

Question. Which one of the following best describes the scientific method?
(a) Doing experiments in laboratories
(b) Collecting all known facts on a subject
(c) Developing and testing hypothesis
(d) Using sensitive electronic measuring instruments

Answer : C

Question. Which of the following stages of Plasmodium is diploid?
(a) Merozoite
(b) Sporozoite
(c) Zygote (ookinete)
(d) Gametocyte

Answer : C

Question. Which of the following stages of Plasmodium is spindle shaped?
(a) sporozoite
(b) Merzoite
(c) Gametocyte
(d) Ookinete

Answer : A

Question. Which of the following forms of Plasmodium is present in the saliva of mosquito?
(a) Merozoites
(b) Sporozoites
(c) Gametocytes
(d) Zygote

Answer : B

Question. Which of these attack red blood cells?
(a) ookinetes
(b) Gametocytes
(c) Sporozoites
(d) Merozoites

Answer : D

Question. Which of the following is not true of malaria patient?
(a) feels cold and chilly
(b) feels headache
(c) feels appetite
(d) temperature rises up to 106 ^oF

Answer : C