11. Consumption of fish is considered to be healthy when compared to flesh of other animals because fish contains which of the following minerals? (UPSC Prelims 1998)
[A] Polyunsaturated fatty acids
[B] saturated fatty acids
[C] essential vitamins
[D] more carbohydrates and proteins
Show Answer
Correct Answer: A [Polyunsaturated fatty acids]
Notes:
Consumption of fish is considered to be healthy when compared to flesh of other animals because fish contains polyunsaturated fatty acids. Polyunsaturated fatty acid is an anti oxidant, which helps in building of tissues.
12. Who among the following was awarded the Nobel Prize in Medicine in 1926 for his contribution to cancer research?
[A] Christiaan Eijkman
[B] Johannes Fibiger
[C] Julius Wagner-Jauregg
[D] Charles-Jules-Henri Nicolle
Show Answer
Correct Answer: B [Johannes Fibiger]
Notes:
Johannes Fibiger was awarded the Nobel Prize in Medicine in 1926 for his contribution to cancer research.
13. Protein is made up of which of the following?
[A] Sugar
[B] Amino acid
[C] Carbohydrate
[D] Fatty acid
Show Answer
Correct Answer: B [Amino acid
]
Notes:
All proteins are linked by a peptide link and are polymers of amino acids. Amino acid is the building block of protein.
14. Which of the following can be done in the cultivation of plant viruses?
[A] tissue culture
[B] cultures of separated cells
[C] whole plants
[D] all of these
Show Answer
Correct Answer: D [all of these]
Notes:
The cultivation of plant viruses can be done in tissue culture, cultures of separated cells and whole plants.
15. Which of the following is a characteristic of Kingdom Plantae?
[A] They are non-motile
[B] They make their own food hence are called autotrophs
[C] It contain photosynthetic pigments called chlorophyll present in the plastids
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
The Plant Kingdom has the following distinctive features:They are motionless, they make their own food, hence they are called autotrophs, they reproduce asexually by vegetative propagation or sexually, these are multicellular eukaryotes, the plant cell has an outer cell wall and a large central vacuole, Plastids in plants contain photosynthetic pigments called chlorophyll, they have separate organs for anchoring, reproduction, support and photosynthesis.
16. Which type of cocci bacteria forms a cluster and irregular pattern?
[A] Staphylococci
[B] Diplococci
[C] Tetracocci
[D] Streptococci
Show Answer
Correct Answer: A [Staphylococci]
Notes:
Staphylococci are the correct answer here. They are known for forming grape-like clusters and irregular patterns. These are gram-positive cocci, or spherical bacteria, that belong to the family Micrococcaceae. Members of the Micrococcaceae family such as Staphylococcus, Micrococcus, and Kocuria, are ubiquitous in nature and are typically harmless, often residing on the skin and mucous membranes of humans and other mammals.
17. Dicotyledonous branches are found in which of the following?
[A] Fern
[B] Funaria
[C] Liverworts
[D] Marchantia
Show Answer
Correct Answer: C [Liverworts]
Notes:
Dicotyledonous branches are found in Liverworts. Liverworts are also moss-like land plants that do not have a vascular system.
18. What does Prothallus represent?
[A] sporophytic phase in a fern
[B] gametophytic phase in a fern
[C] sporophytic phase in a gymnosperm
[D] gametophytic phase in a gymnosperm
Show Answer
Correct Answer: B [gametophytic phase in a fern]
Notes:
Prothallus represents the gametophytic phase in a fern. The diploid sporophyte represents a major, independent, photosynthetic, and vascular plant body.
19. Where is the phloem located?
[A] outer side of the vascular bundle.
[B] centre of the vascular bundle
[C] marginal regions of leaves and stems
[D] None of these
Show Answer
Correct Answer: A [outer side of the vascular bundle.]
Notes:
The xylem is located towards the adaxial surface of the leaf, whereas the phloem is located towards the axial surface of the leaf.
20. Which of the following is the formation of male and female gametes?
[A] Gametogenesis
[B] Gamete transfer
[C] Megasporogenesis
[D] Microgametogensis
Show Answer
Correct Answer: A [Gametogenesis]
Notes:
Gametogenesis is the formation of male and female gametes while Gamete transfer brings the male and female gametes together.
