11. Which one among the following is not a good source of nutritional calcium? (UPSC Prelims 2006)
[A] Rice
[B] Ragi
[C] Skimmed milk
[D] Egg
Show Answer
Correct Answer: B [Ragi]
Notes:
Ragi contains only 344 mg of calcium and in 100 gm of ragi protein is 7.3 gm., fat 1.3 gm, fibre 3.6 gms, carbohydrates 72 gms, moisture 13.1 gm.
12. Pollination by which among the following is called as ornithophily?
[A] Rodents
[B] Aquatic animals
[C] Ants
[D] Birds
Show Answer
Correct Answer: D [Birds]
Notes:
Ornithophily refers to the pollination assisted by the birds. Ornithology is a branch of science which studies about birds. Dr. Salim Ali is a famous Indian ornithologist.
13. Which tissue of plant is used to transport food to various parts?
[A] Xylem
[B] Parenchyma
[C] Sclerenchyma
[D] Phloem
Show Answer
Correct Answer: D [Phloem]
Notes:
Phloem, also called bast, are tissues in plants that conduct foods made in the leaves to all other parts of the plant. This transport process is called translocation. Phloem is composed of various specialized cells called sieve tubes, companion cells, phloem fibres, and phloem parenchyma cells.
14. Which one of the following cultivation is related to Floriculture?
[A] Cultivation of Vegetables and Fruits
[B] Cultivation and Study of Ornamental Flowers
[C] Cultivation of crops
[D] None of these
Show Answer
Correct Answer: B [Cultivation and Study of Ornamental Flowers]
Notes:
Floriculture in the branch of biology is related cultivation and Study of Ornamental Flowers.
15. Who has introduced Two Kingdom Classification?
[A] Carolus Linnaeus
[B] Ernest Haeckel
[C] Copeland
[D] RH Whittaker
Show Answer
Correct Answer: A [Carolus Linnaeus]
Notes:
Carolus Linnaeus proposed Two kingdom of classification in which he classified organisms into Plantae and Animalia.
16. Which of the following is the function of contractile vacuole?
[A] To carry out pinocytosis
[B] To carry out metabolic process
[C] To pump excess water out of the cell
[D] To carry out phagocytosis
Show Answer
Correct Answer: C [To pump excess water out of the cell]
Notes:
Contractile vacuoles that regulate intracellular water balance by storing and expelling excess water from the cell.
17. Which of the following give maximum energy after breaking down?
[A] Fat
[B] Sugar
[C] Carbohydrate
[D] Protein
Show Answer
Correct Answer: A [Fat]
Notes:
Fat gives maximum energy after breaking down, fat is composed of essential carbon and hydrogen atoms releasing 9.1 calories per gram of energy.
18. Which among the following is the sweetest sugar?
[A] Fructose
[B] Glucose
[C] Lactose
[D] Ribose
Show Answer
Correct Answer: A [Fructose]
Notes:
Fructose is a monosaccharide and is considered the sweetest sugar. It is mainly found in fruits, juices, honey and some vegetables. Like apple, onion, potato etc.
19. Viruses reproduce in living cells by__?
[A] replication
[B] duplication
[C] multiplication
[D] all of these
Show Answer
Correct Answer: A [replication]
Notes:
DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules.
20. To which plant kingdom does Wolffia belong?
[A] Angiosperms
[B] Gymnosperms
[C] Pteridophytes
[D] None of these
Show Answer
Correct Answer: A [Angiosperms]
Notes:
Wolffia belong to Angiosperms. Angiosperms are seed-bearing vascular plants that have a well-differentiated plant body. The seeds of angiosperms are enclosed within the fruit.
