11. In the branch of biology which of the following deals with the Study of kidney?
[A] Nephrology
[B] Neurology
[C] Neonatology
[D] None of these
Show Answer
Correct Answer: A [Nephrology]
Notes:
Nephrology is a specialty of adult internal medicine and pediatrics that deals with the study of the kidneys, particularly normal kidney function (kidney physiology) and kidney disease.
12. Which of the following can occur during genetic recombination during prokaryotes?
[A] Transformation
[B] Transduction
[C] Conjugation
[D] All of these
Show Answer
Correct Answer: D [All of these]
Notes:
Prokaryotes are organisms whose cells lack a nucleus and other organelles.
13. 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.
14. What kind of sugar is present in sugarcane?
[A] Sucrose
[B] Hexose
[C] Glucose
[D] Ribose
Show Answer
Correct Answer: A [Sucrose]
Notes:
Sucrose is present in sugarcane. It is also known as cane sugar or table sugar. It is the combination of glucose and fructose.
15. Which of the following is a plant without seed vascular tissue?
[A] Angiosperm
[B] Pteridophytes
[C] Bryophytes
[D] Gymnosperms
Show Answer
Correct Answer: B [Pteridophytes]
Notes:
Pteridophytes are the most primitive vascular plants. It is a simple reproductive system that does not have flowers and seeds.
16. A single polar flagellum is known as__?
[A] monotrichous
[B] lophotrichous
[C] amphitrichous
[D] none of these
Show Answer
Correct Answer: A [monotrichous]
Notes:
Monotrichous bacteria have a single flagellum. Lophotrichous bacteria have multiple flagella located at the same location on bacterial surfaces that work together to steer the bacteria in the same direction.
17. Which of the following are the roots of gymnosperms?
[A] Tap root
[B] Adventitious roots
[C] Rhizoid
[D] Rhizophores
Show Answer
Correct Answer: A [Tap root]
Notes:
The root system present in gymnosperms is the taproot system. Tap roots somewhat dilute the root of the upright plant and grow vertically downwards.
18. In gymnosperms how many male gametes are produced by each pollen grain?
[A] 4
[B] 3
[C] 2
[D] 1
Show Answer
Correct Answer: C [2]
Notes:
In gymnosperms, there are only 2 male gametes are produced by each pollen grain.
19. Which family is known as the ‘Potato’ family?
[A] Solanaceae
[B] Fabaceae
[C] Cruciferae
[D] Liliaceae
Show Answer
Correct Answer: A [Solanaceae]
Notes:
Solanaceae family is known as the ‘Potato’ family. The family is also known as the nightshade or potato family. The family includes Jimson weed, eggplant, mandrake, deadly nightshade or belladonna, capsicum, potato, tobacco, tomato, and petunia.
20. Which plant tissue consists of phloem and xylem?
[A] Complex Permanent Tissue
[B] Simple Permanent Tissue
[C] Parenchyma Tissue
[D] Collenchyma Tissue
Show Answer
Correct Answer: A [Complex Permanent Tissue]
Notes:
Complex Permanent Tissue tissues include phloem and xylem. Xylem helps in the transport of water and soluble components.
Phloem helps in the transportation of food particles.
