11. Which of the following sets is correctly paired in Taxonomy?
[A] Leech, Locust, Sea urchin, Lobster
[B] Star Fish, Jelly Fish, Cuttle Fish, Octopus
[C] Milliped, Crab, Centipede, Cockroach
[D] Round Worm, Earthworm, Flatworm, Silk worm
Show Answer
Correct Answer: C [Milliped, Crab, Centipede, Cockroach]
Notes:
The set Milliped, Crab, Centipede, Cockroach is correctly paired in Taxonomy, referring to the classification of these animals in their biological taxonomy. All belong to Arthropoda, the invertebrate group characterized by an exoskeleton, a segmented body, and jointed appendages. They hold a vast diversity of forms and have more species than any other animal phyla.
12. What does the first name in the scientific name of an organism denote?
[A] Species
[B] Genus
[C] Order
[D] Class
Show Answer
Correct Answer: B [ Genus ]
Notes:
In Binominal nomenclature, the name of organisms is in genus species pattern. The second word in an organism’s scientific name refers to one species within the genus; is the specific epithet but actually gives no clue as to species if used alone.
13. What is Chloramphenicol?
[A] It is an antibiotic
[B] It is an antiseptic
[C] It is an antacid
[D] It is an analgesic
Show Answer
Correct Answer: A [ It is an antibiotic]
Notes:
Chloramphenicol is a broad spectrum antibiotic. It can be given orally in case of typhoid, dysentery, acute fever, certain form of urinary infections, meningitis and pneumonia.
14. Which organ of the body produces the fluid known as bile?
[A] Liver
[B] Pancreas
[C] Gall bladder
[D] Kidney
Show Answer
Correct Answer: A [Liver]
Notes:
Liver produces a digestive fluid known as bile. Liver release bile into Gall bladder, a small, pear shaped organ located just below your liver in the upper right side of your abdomen.
15. Night Blindness is caused by deficiency of which of the following Vitamins?
[A] Vitamin C
[B] Vitamin K
[C] Vitamin A
[D] Vitamin B
Show Answer
Correct Answer: C [Vitamin A]
Notes:
Night blindness is caused by nearsightedness, cataracts, or vitamin A deficiency. Night blindness (nyctalopia) is the inability to see well at night or in poor light. Its causes include glaucoma medications and cataracts
16. In a bisexual flower, if androecium and gynaecium mature at different times, which of the following is the name given to the phenomenon? (UPSC Prelims 2002)
[A] Dichogamy
[B] Herkogamy
[C] Heterogamy
[D] Monogamy
Show Answer
Correct Answer: A [Dichogamy]
Notes:
Dichogamy is the condition in which the male and female reproductive organs of a flower mature at different times, thereby ensuring that self-fertilization does not occur.
17. Which among the following is not a bio-fertilizer?
[A] Vermi compost
[B] Urea
[C] Azobacter
[D] Clostridium
Show Answer
Correct Answer: B [Urea]
Notes:
Biofertilizers are substances that contain microorganisms, which when added to the soil increase its fertility and promote plant growth. Urea is not a biofertilizer.
18. Who among the following is considered to be the father of taxonomy?
[A] Engler
[B] Karl Landsteiner
[C] Linnaeus
[D] RH Whittaker
Show Answer
Correct Answer: C [Linnaeus
]
Notes:
The Father of Taxonomy is Carolus Linnaeus. He classified organisms into five parts.
19. Which of the following causes chloroplasts to be green?
[A] because they contain the pigment cobalt
[B] because they contain the pigment chlorophyll
[C] because they contain the pigment carotenoids
[D] because they contain the pigment betacyanins
Show Answer
Correct Answer: B [because they contain the pigment chlorophyll]
Notes:
Chloroplasts are green because they contain the pigment chlorophyll, which is important for photosynthesis. Chlorophyll occurs in many different forms. Chlorophyll a and b are the major pigments of higher plants and green algae.
20. Which of the following is a common feature of protonema of multicellular fungi, filamentous algae, and mosses?
[A] way of nutrition
[B] diplomatic life cycle
[C] multiply by fragmentation
[D] members of the plant kingdom
Show Answer
Correct Answer: C [multiply by fragmentation]
Notes:
The protonema of multicellular fungi, filamentous algae and mosses all show multiplication by fragmentation.
