11. Which among the following is the method of growing plants in the absence of soil?
[A] Hydrology
[B] Hydrotectonics
[C] Hydroponics
[D] Hydrochronology
Show Answer
Correct Answer: C [Hydroponics]
Notes:
The method of growing plants in the absence of soil is called as hydroponics. The required suppliments to the plants are supplied through the mineral nutrient solutions.
12. Robert Hooke is known for which of the following works?
[A] how messages pass between nerve cells in mammals
[B] first use of the word cell
[C] theory of punctuated equilibrium
[D] aquatic ape theory
Show Answer
Correct Answer: B [first use of the word cell]
Notes:
Robert Hooke is known for his discovery of the law of elasticity (Hooke’s law), for his first use of the word cell in the sense of a basic unit of organisms, and for his studies of microscopic fossils, which made him an early proponent of a theory of evolution.
13. The theory of DNA structure and nature was propounded by __?
[A] Oswald Avery
[B] James Black
[C] Watson and Crick
[D] John Eccles
Show Answer
Correct Answer: C [Watson and Crick]
Notes:
Watson and Crick realized that DNA was made up of two chains of nucleotide pairs that encode the genetic information for all living things.
14. The Six Kingdoms of Classification is also known as the latest classification system. By whom is it given?
[A] C Woese
[B] O Kandler
[C] Mc Wheels.
[D] Ernest Haeckel
Show Answer
Correct Answer: A [C Woese]
Notes:
In biology, a scheme of classifying organisms into six kingdoms: Proposed by Carl Woese et al: Animalia, Plantae, Fungi, Protista, Archaea/Archaeabacteria, and Bacteria/Eubacteria.
15. Gymnosperms are never__?
[A] medium-sized trees
[B] tall trees
[C] herbs
[D] shrubs
Show Answer
Correct Answer: C [herbs]
Notes:
Living gymnosperms are predominantly middle-sized trees to tall trees and shrubs Rarely they are woody climbers. There are no herbs in gymnosperms.
16. Which of the following arises from meristematic tissues and matures with other tissues?
[A] Glandular
[B] Phloem
[C] Laticiferous
[D] Sclerenchyma
Show Answer
Correct Answer: C [Laticiferous ]
Notes:
Laticiferous tissues arise from meristematic tissues and mature with other tissues.
17. Where is the petiole found?
[A] roots
[B] stem
[C] leaves
[D] fruits
Show Answer
Correct Answer: C [leaves]
Notes:
The petiole is the stalk that attaches the blade to the base of the leaf.
18. What correctly defines “mother of pearl”?
[A] An oyster which yields the pearl
[B] A special large sized pearl found in japan
[C] A hard iridescent substance forming the inner layer of certain shells
[D] Female individuals of certain species of shelled mollusk
Show Answer
Correct Answer: B [A special large sized pearl found in japan]
Notes:
A special large-sized pearl found in japan correctly defines “mother of pearl”. Nacre, also known as the mother of pearl, is an organic-inorganic composite material produced by some mollusks as the inner shell layer. This is what makes up the outer layer of pearls. It is strong, flexible, and iridescent.
19. Where are Amphiumas found?
[A] southeastern Virginia
[B] Louisiana
[C] Alabama
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Amphiumas are found in southeastern Virginia, eastern North Carolina, South Carolina, southern Georgia and Alabama, Florida, south Mississippi, Louisiana, and southeastern Texas. Amphiumidae is also called congo eels.
20. Why is the bladder absent in birds?
[A] Due to disturbs equilibrium of birds
[B] Due to Urine is absent
[C] Due to Solid excretory product
[D] All of them
Show Answer
Correct Answer: D [All of them]
Notes:
The urinary bladder is absent in class Aves which includes birds. They lack a bladder because the waste product is mostly uric acid. They are uricotelic and excrete waste with feces.
