11. Which gas is absorbed by the plants during photosynthesis?
[A] Oxygen
[B] Carbon dioxide
[C] Nitrogen
[D] Hydrogen
Show Answer
Correct Answer: B [Carbon dioxide]
Notes:
During the process of photosynthesis, plants take carbon dioxide and water and produces oxygen and glucose in the presence of light.
12. Who is the father of Modern Botany?
[A] Carl Linnaeus
[B] Theophrastus
[C] Robert Hooke
[D] Krateuas
Show Answer
Correct Answer: A [Carl Linnaeus]
Notes:
Carl Linnaeus is known as the father of modern botany. Linnaeus first formulated the principles, known as binomial nomenclature, to create a uniform system for defining and naming natural species and species of organisms.
13. In which of the following hemocaelic body cavity is found?
[A] Cockroach
[B] Lizard
[C] Mosquito
[D] Honeybee
Show Answer
Correct Answer: A [Cockroach]
Notes:
Hemocoelic body cavity is a characteristic of Cockroach.
14. The process by which ammonia is converted into nitrate is__?
[A] Nitrogen-fixation
[B] Ammonification
[C] Denitrification
[D] Nitrification
Show Answer
Correct Answer: D [Nitrification]
Notes:
The Process by which ammonia is converted into nitrate is called Nitrification. It can be done in two steps that involve Nitrite formation and Nitrate formation.
15. What kind of virus is measles?
[A] enveloped RNA virus
[B] Coronaviridae
[C] tobacco mosaic virus
[D] Npne of these
Show Answer
Correct Answer: A [enveloped RNA virus]
Notes:
Measles is caused by a single-stranded, enveloped RNA virus with a serotype 1. It is classified as a member of the genus Morbillivirus in the Paramyxoviridae family. Humans are the only natural host of the measles virus.
16. Enzyme neuraminidase is carried by which of the following virus?
[A] Human immunodeficiency virus
[B] Epstein-Barr virus
[C] Influenza virus
[D] Adenovirus
Show Answer
Correct Answer: C [Influenza virus]
Notes:
Viral neuraminidase is a type of neuraminidase found on the surface of the influenza virus that enables the virus to be released from the host cell. Neuraminidases are enzymes that dissociate sialic acid groups from glycoproteins.
17. Green algae, red algae and brown algae are common examples of__?
[A] Thallophyta
[B] Bryophyta
[C] Pteridophyta
[D] Gymnosperms
Show Answer
Correct Answer: A [Thallophyta]
Notes:
Green algae, red algae and brown algae are common examples of Thallophyta.
18. Which bacteria are helpful in the Nitrification Process?
[A] Acetobacter
[B] Nitrosococcus
[C] Campylobacter
[D] Actinomycetes
Show Answer
Correct Answer: B [Nitrosococcus
]
Notes:
Nitrification is the process by which bacteria changes soil ammonia into nitrates. Nitrosococcus, Nitrosomonas, Nitrosospira etc. is the bacteria which is helpful in the Nitrification Process
19. When did the effect of cytokinin first appear?
[A] adding the liquid endosperm of papaya
[B] adding the liquid endosperm of coconuts
[C] adding the liquid endosperm of mango
[D] adding the liquid endosperm of grapes
Show Answer
Correct Answer: B [adding the liquid endosperm of coconuts]
Notes:
The effect of cytokinin was first observed when the addition of liquid endosperm of coconut to developing plant embryos in culture promoted their growth.
20. The process of development of fruit without any prior fertilization is called__.
[A] Asexual reproduction
[B] Parthenocarpy
[C] Apomixis
[D] Sexual reproduction
Show Answer
Correct Answer: B [Parthenocarpy]
Notes:
The process of development of fruit without any prior fertilization is called Parthenocarpy. Pineapple, banana, cucumber, grape, watermelon, orange, grapefruit, pear, fig are some examples of Parthenocarpy.
