11. In the names Mangifera indica (mango), Solanum tuberosum(potato) and Panthera leo(lion), what does the three names, indica, tuberosum and leo represent?
[A] Taxonomic Hierarchy
[B] Specific Epithet
[C] Binomial Nomenclature
[D] Identification
Show Answer
Correct Answer: B [Specific Epithet]
Notes:
A specific epithet is the second part of a species name in binomial nomenclature in any branch of biology. In botany, the second part of a botanical name. Specific epithet (zoology), also called the specific name, meaning the second part of the species name or binomen.
12. Triple Antigen IPV immunizes against three diseases. Which of the following is not immunized by ‘Triple Antigen’? (UPSC Prelims 1979).
[A] Typhoid
[B] Whooping cough
[C] Tetanus
[D] Diphtheria
Show Answer
Correct Answer: A [Typhoid]
Notes:
DPT is a class of combination vaccines against three infectious diseases in humans: diphtheria, pertussis (whooping cough), and tetanus. The vaccine components include diphtheria and tetanus and killed whole cells of the bacterium that causes pertussis. Diptheria is a highly contagious bacterial infection typically affecting the throat and tonsils with the formation of a thick grey membrane over those areas. Tetanus is bacteria which lives in soil and contaminates wounds, where it produces a powerful toxin, the toxin attacks the nervous system causing increasing muscle spasm and rigidity. Whooping Cough is one of the most contagious bacterial infections known. Beginning with a runny nose and sore throat, it progresses to a severe spasmodic cough which persists for around 3 months.
13. Which of the following cell organelles does not contain DNA?
[A] Nucleus
[B] Mitochondria
[C] Lysosomes
[D] Chloroplast
Show Answer
Correct Answer: C [Lysosomes]
Notes:
Lysosomes and vacuoles do not contain DNA. Mitochondria and chloroplasts have their own DNA.
14. Which of the following protects the body from infectious disease?
[A] Leukocytes
[B] Red Blood Cells
[C] Endoplasmic Reticulum
[D] Golgi Bodies
Show Answer
Correct Answer: A [Leukocytes]
Notes:
White blood cells (WBC), also called leukocytes or leukocytes. Immune system cells that help protect our body from infectious diseases.
15. What is another name for Koshland’s theory of enzyme action?
[A] Reduced fit theory
[B] Induced fit theory
[C] Enzyme coenzyme theory
[D] Lock and key theory
Show Answer
Correct Answer: B [Induced fit theory]
Notes:
Induced fit theory is also known as Koshland’s theory of enzyme action. It describes the enzyme-substrate interaction.
16. Who among the following is considered as the “Father of Indian Phycology”
[A] Prof. M.O.P. Iyenger
[B] Prof. J.N. Mishra
[C] Prof. R.R. Mishra
[D] Prof. R.N. Singh
Show Answer
Correct Answer: A [Prof. M.O.P. Iyenger]
Notes:
MOP Iyengar from Madras is considered the father of Indian Phycology. He discovered Fritschiella heterotrichus terrestrial algae.
17. Which place in India is called the “Gold Mine of Liverworts”?
[A] Eastern Himalayas
[B] Western Himalayas
[C] Western Ghats
[D] Eastern Ghats
Show Answer
Correct Answer: B [Western Himalayas]
Notes:
Western Himalayas is the place in India called the “Gold Mine of Liverworts”
18. Which of the following performs an important function of flowers?
[A] They help in the process of reproduction
[B] They produce diaspores without fertilization
[C] The gametophytes develop inside the flower
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Flowers perform the following important functions: they help in the process of reproduction, they produce diaspores without fertilization, gametophytes develop inside the flower, flowers attract insects and birds which then transfer pollen from one’s anther act as a medium to Flowers till the stigma of another flower, the ovary of the flower develops into a fruit that contains the seed.
19. To which family do brown mustard and broccoli belong?
[A] Solanaceae
[B] Fabaceae
[C] Cruciferae
[D] None of these
Show Answer
Correct Answer: C [Cruciferae]
Notes:
Brassicaceae or Cruciferae is a medium-sized family of flowering plants commonly known as the mustard, cruciferous or cabbage family.
20. There are two nuclei at the end of the pollen tube, what are they called?
[A] Tube nucleus and a generative nucleus
[B] Sperm and ovum
[C] Generative nucleus and stigma
[D] Tube nucleus and sperm
Show Answer
Correct Answer: A [Tube nucleus and a generative nucleus]
Notes:
The tube nucleus and a generative nucleus are two nuclei at the end of the pollen tube.
