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MCQs

Total Questions : 99 | Page 4 of 10 pages
Question 31. Biologists have been able to demonstrate the hearing and sound sensory mechanism through the acoustico-lateralis system in which of the following vertebrates ?
  1.    amphibians
  2.    snakes
  3.    fishes
  4.    Birds
 Discuss Question
Answer: Option C. -> fishes
BIOLOGISTS HAVE BEEN ABLE TO DEMONSTRATE THE HEARING AND SOUND SENSORY MECHANISM THROUGH THE ACOUSTICO-LATERALIS SYSTEM IN FISHES.
Question 32. For Lemurs, which among the following is a correct group to place in ?
  1.    Rodents
  2.    Primates
  3.    Bats
  4.    Sloths
 Discuss Question
Answer: Option B. -> Primates
LEMURS ARE MAMMALS OF THE ORDER PRIMATES WHICH ARE NATIVE ONLY TO THE ISLAND OF MADAGASCAR. THEY ARE DIVIDED INTO 8 FAMILIES AND IT CONSISTS OF 15 GENERA AND AROUND 100 EXISTING SPECIES.
Question 33. Which among the following is the only internal human organ which can regenerate?
  1.    Pancreas
  2.    Kidney
  3.    Liver
  4.    Spleen
 Discuss Question
Answer: Option C. -> Liver
LIVER IS THE ONLY INTERNAL HUMAN ORGAN WHICH CAN REGENERATE. IT DETOXIFIES VARIOUS METABOLITES, SYNTHESIZES PROTEINS AND PRODUCES BIOCHEMICALS WHICH ARE NECESSARY FOR DIGESTION AND GROWTH.
Question 34. Rafflesia is the plant with largest flowers and found in many parts of the South East Asia. It is a ______?
  1.    Mangrove Plant
  2.    Ornamental Plant
  3.    Parasitic Plant
  4.    Carnivorous Plant
 Discuss Question
Answer: Option C. -> Parasitic Plant
RAFFLESIA IS A GENUS OF PARASITIC FLOWERING PLANTS IN THE FAMILY RAFFLESIACEAE. IT IS THE PLANT WITH LARGEST FLOWERS AND FOUND IN MANY PARTS OF THE SOUTH EAST ASIA.
Question 35. Consider the following statements:
1: For some diseases like Malaria and Denue, techniques of Population suppression of Vectors is favored over the disease resistance techniques
2: RIDL is a Population suppression technique.
Which among the above statements is / are correct?
  1.    Only 1 is correct
  2.    Only 2 is correct
  3.    Both 1 & 2 are correct
  4.    Neither 1 nor 2 is correct
 Discuss Question
Answer: Option C. -> Both 1 & 2 are correct
FOR SOME DISEASES LIKE MALARIA AND DENUE, TECHNIQUES OF POPULATION SUPPRESSION OF VECTORS IS FAVORED OVER THE DISEASE RESISTANCE TECHNIQUES. RIDL IS A POPULATION SUPPRESSION TECHNIQUE.
Question 36. Which among the following is the correct meaning of Phyllotaxy?
  1.    Classification of plants as per the leaves structure
  2.    The manner of arrangement of leaves in stem or branch
  3.    The manner the leaves fall from the branches
  4.    The anatomy of leaves in angiosperms
 Discuss Question
Answer: Option B. -> The manner of arrangement of leaves in stem or branch
PHYLLOTAXY MEANS THE MANNER OF ARRANGEMENT OF LEAVES IN STEM OR BRANCH. IT IS THE ARRANGEMENT OF LEAVES ON A PLANT STEM. PHYLLOTACTIC SPIRALS USUALLY FORM A DISTINCTIVE CLASS OF PATTERNS IN NATURE.
Question 37. In which of the following, the cellular power plants – Mitochondria are absent ?
  1.    Red algae
  2.    Green Algae
  3.    Bacteria
  4.    Brown Algae
 Discuss Question
Answer: Option C. -> Bacteria
THE MITOCHONDRIA ARE COMMON IN EUKARYOTIC CELLS. BACTERIA IS PROKARYOTIC
Question 38. Which among the following does not fall in the category of morbid fear or Phobia?
  1.    Claustrophobia
  2.    Photophobia
  3.    Photophobia
  4.    Anthophobia
 Discuss Question
Answer: Option B. -> Photophobia
PHOTOPHOBIA IS NOT A FEAR. IT IS EXCESSIVE SENSITIVITY TO LIGHT AND THE AVERSION TO SUNLIGHT OR WELL-LIT PLACES,
CLAUSTROPHOBIA IS FEAR OF CONFINED PLACES,
ALGOPHOBIA IS FEAR OF PAIN,
ANTHOPHOBIA IS FEAR OF FLOWERS,
Question 39. Which of the following plant growth hormone was recognized by Japanese scientists?
  1.    Auxin
  2.    Gibberellins
  3.    Abscisic acid
  4.    Cytokinin
 Discuss Question
Answer: Option B. -> Gibberellins
GIBBERELLINS, FIRST RECOGNIZED IN 1926 BY A JAPANESE SCIENTIST, EIICHI KUROSAWA. HE WAS STUDYING FOOLISH SEEDLING DISEASE IN RICE CALLED AS BAKANAE
Question 40. The Gram Positive Bacteria can be identified by the Gram staining because of the following reasons?
  1.    The cell walls have more lipids compared to peptidoglycan
  2.    The Cells walls have more Peptidoglycan compared to Lipids
  3.    The Cells membrane has more fatty acids
  4.    The plasma has Peptidoglycans
 Discuss Question
Answer: Option B. -> The Cells walls have more Peptidoglycan compared to Lipids
THE CELL WALL WHICH IS MADE UP OF PEPTIDOGLYCAN AS WELL AS LIPIDS GETS VIOLET DUE TO THE REACTION OF THE CV+. AFTER THE DECOLORIZATION WITH ALCOHOL, THE LIPIDS GETS DISSOLVED AND THE BACTERIA WITH HIGHER PEPTIDOGLYCAN REMAIN VIOLET. THESE ARE CALLED GRAM POSITIVE BACTERIA.

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