11. Epiphytes are plants which depend on other plants for? (UPSC Prelims 2001)
[A] food
[B] mechanical support
[C] shade
[D] water
Show Answer
Correct Answer: B [mechanical support]
Notes:
They are an important source of food for many species. Typically, the older parts of a plant will have more epiphytes growing on them. Epiphytes differ from parasites in that they grow on other plants for physical support and do not necessarily affect the host negatively.
12. 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.
13. Which of the following is not an example of Fungi?
[A] Mushroom
[B] Euglena
[C] Mucor
[D] Albugo
Show Answer
Correct Answer: B [Euglena]
Notes:
Euglena is an example of Protista. Mushroom, Mucor, and Albugo are part of Fungi.
14. In which part of the body cholesterol is synthesized?
[A] Pancreas
[B] Liver
[C] Spleen
[D] Stomach
Show Answer
Correct Answer: B [Liver]
Notes:
Cholesterol is a type of Lipid or the fat present in blood. The majority of the cholesterol consumed by the human body on a daily basis is synthesised by Liver.
15. What is the arrangement of megaspores in tetrads in gymnosperms?
[A] Decussate
[B] Tetrahedral
[C] Linear
[D] Isobilateral
Show Answer
Correct Answer: C [Linear]
Notes:
These are formed from the mother cells inside the anther. Thus, the tetrad of the megaspore is usually linear.
16. 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.
17. What is the function of strigolactone?
[A] promote seed germination in some species
[B] inhibit lateral apical development in the absence of auxins
[C] establishment of mycorrhizae
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Strigolactones promote seed germination in some species and inhibit lateral apical development in the absence of auxin. Strigolactones also play a role in the establishment of mycorrhiza as well as a mutualistic association between plant roots and fungi.
18. The process of formation of seeds without fertilization in flowering plants is known as __.
[A] Budding
[B] Apomixis
[C] Sporulation
[D] Somatic hybridization
Show Answer
Correct Answer: B [Apomixis]
Notes:
The process of formation of seeds without fertilization in flowering plants is known as Apomixis.
19. In which of the following are gills hidden?
[A] Cryptobranchidae
[B] Ambystomatida
[C] Amphiumidae
[D] Plethodontidae
Show Answer
Correct Answer: A [Cryptobranchidae]
Notes:
In Cryptobranchidae gills are hidden. Hellbenders belong to the Cryptobranchidae family. They contain the largest living salamanders.
20. The common Indian bullfrog is__
[A] Rana tigrina
[B] Rana esculenta
[C] Rana silvatica
[D] Rana cyanophlyctis
Show Answer
Correct Answer: A [Rana tigrina]
Notes:
The common Indian bullfrog is Rana tigrina. Species of the Indian bullfrog inhabit the wetlands of South and Southeast Asia, living in holes and thickets close to permanent water.
