11. Which among the following is not a viral disease?
[A] Ebola
[B] HIV
[C] H1N1
[D] Tuberculosis
Show Answer
Correct Answer: D [Tuberculosis]
Notes:
Tuberculosis is a bacterial disease where as the remaining three are viral diseases.
Extra info: India is working towards achieving TB free India by 2025.
Nikshay portal is associated with TB.
12. Which of the following was discovered by Alexander Fleming?
[A] DNA
[B] Vaccination
[C] penicillin
[D] blood circulation
Show Answer
Correct Answer: C [penicillin]
Notes:
Alexander Fleming discovered penicillin, whose use as an antibiotic has saved millions of lives.
13. The Six Kingdoms of Classification is also known as the latest classification system. By whom is it given?
[A] C Woese
[B] O Kandler
[C] Mc Wheels.
[D] Ernest Haeckel
Show Answer
Correct Answer: A [C Woese]
Notes:
In biology, a scheme of classifying organisms into six kingdoms: Proposed by Carl Woese et al: Animalia, Plantae, Fungi, Protista, Archaea/Archaeabacteria, and Bacteria/Eubacteria.
14. Which virus belongs to the Hepadnaviridae family?
[A] Hepatitis A virus
[B] Hepatitis B virus
[C] Hepatitis D virus
[D] All of these
Show Answer
Correct Answer: B [Hepatitis B virus]
Notes:
Hepadnavirus B (hepatitis B virus, HBV) belongs to the genus Orthohepadnavirus of the Hepadnaviridae family. It is an important cause of viral hepatitis in humans worldwide.
15. A single polar flagellum is known as__?
[A] monotrichous
[B] lophotrichous
[C] amphitrichous
[D] none of these
Show Answer
Correct Answer: A [monotrichous]
Notes:
Monotrichous bacteria have a single flagellum. Lophotrichous bacteria have multiple flagella located at the same location on bacterial surfaces that work together to steer the bacteria in the same direction.
16. Which plant tissue has the ability to grow rapidly by division?
[A] Meristematic tissue
[B] Permanent tissues
[C] Complex Permanent Tissue
[D] Protective tissues
Show Answer
Correct Answer: A [Meristematic tissue]
Notes:
Meristematic tissues have the ability to grow rapidly by division and they help in the major development of vegetation. The increase in length and increase in diameter of the plant is done by these cells. Meristematic cells are dense, living cells that have a large nucleus.
17. Where do the nucleus of the pollen tube and the secondary nucleus of the ovum develop?
[A] Stigma
[B] Endosperm
[C] Anther
[D] Stamen
Show Answer
Correct Answer: B [Endosperm]
Notes:
The nucleus of the pollen tube and the secondary nucleus of the egg develop in the endosperm.
18. Insertion of a bud from the desired plant into an opening in the bark of a suitable rootstock to produce a beneficial variety is called__.
[A] Budding
[B] Apomixis
[C] Sporulation
[D] Somatic hybridization
Show Answer
Correct Answer: A [Budding]
Notes:
Insertion of a bud from the desired plant into an opening in the bark of a suitable rootstock to produce a beneficial variety is called Budding.
19. Which of the following are armored fish?
[A] Chondrichthyes
[B] Osteichtliyes
[C] Placoderms
[D] Acanthodians
Show Answer
Correct Answer: C [Placoderms]
Notes:
Placoderms are armored fish. The placoderms are a class of armored prehistoric fish, known from fossils, that lived from the Silurian to the end of the Devonian period.
20. What function is performed by Organ of Jacobson in amphibians?
[A] temperature
[B] pressure
[C] smell
[D] sound
Show Answer
Correct Answer: C [smell]
Notes:
In amphibians, the Organ of Jacobson stands for the smell. Jacobson’s organ, also called the vomeronasal organ, is an organ of chemoresistance that is part of the olfactory system of amphibians, reptiles, and mammals, although it does not occur in all tetrapod groups.
