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BIOLOGY MCQs

Total Questions : 2561 | Page 253 of 257 pages
Question 2521. Grassland with scattered tree is known as
  1.    Deciduous Forests
  2.    Tropical Rain Forests
  3.    Savanna
  4.    Evergreen Forests
 Discuss Question
Answer: Option C. -> Savanna
Question 2522. Plants which grow on saline soils are known as
  1.    Hydrophytes
  2.    Xerophytes
  3.    Halophytes
  4.    Succulents
 Discuss Question
Answer: Option C. -> Halophytes
Question 2523. The scientific study of how organisms interact with their environment is called
  1.    None of these
  2.    Ecology
  3.    Evolution
  4.    Zoology
 Discuss Question
Answer: Option B. -> Ecology
Question 2524. Dr. Birbal Sahni; a famous Indian botanist is concerned with ________ studies
  1.    Algal
  2.    Bryophytic
  3.    Fungal
  4.    Fossil
 Discuss Question
Answer: Option D. -> Fossil
Question 2525. One day you wake with a sore throat and a runny nose. Your doctor takes a swab from your throat, sends it to a lab, and telephones you the next day to say that antibiotic will not help you get better. Which of the following is the most likely reason for the doctor's statement?
  1.    You need to be vaccinated instead of taking an antibiotic
  2.    You need an antiseptic, not an antibiotic
  3.    You are infected by a virus
  4.    Having waited a day, it is too late to take an antibiotic
 Discuss Question
Answer: Option C. -> You are infected by a virus
Question 2526. Which ecological pyramid can never be inverted
  1.    Pyramid of energy
  2.    Pyramid of size
  3.    Pyramid of biomass
  4.    Pyramid of number
 Discuss Question
Answer: Option A. -> Pyramid of energy
Question 2527. Which of the following organisms fix nitrogen in aquatic ecosystems
  1.    Cyanobacteria
  2.    Chemoautotrophs
  3.    Phytoplankton
  4.    Fungi
 Discuss Question
Answer: Option A. -> Cyanobacteria
Question 2528. The storage form of glucose in animals is
  1.    Starch
  2.    Glucose
  3.    Glycogen
  4.    None of the above
 Discuss Question
Answer: Option C. -> Glycogen
Question 2529. Genes are made of 
  1.    Carbohydrates
  2.    Proteins
  3.    Fats
  4.    Nucleotides
 Discuss Question
Answer: Option D. -> Nucleotides
Question 2530. What organelle carries out photosynthesis?
  1.    Chloroplasts
  2.    Ribosomes
  3.    Chromosomes
  4.    All of the above
 Discuss Question
Answer: Option A. -> Chloroplasts

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