11. Which of the following microorganisms causes Ring worm? (UPSC Prelims 1990)
[A] Bacterium
[B] Fungus
[C] Virus
[D] Worm
Show Answer
Correct Answer: B [Fungus]
Notes:
Ringworm isn’t a worm. It’s a skin infection that’s caused by moldlike fungi that live on the dead tissues of your skin, hair, and nails. It can occur at any place and on your scalp. When one gets it between the toes, it’s what people call athlete’s foot.
12. Significantly higher level of urea in the blood is the indication of which of the following damages? (UPSC Prelims 1991)
[A] Liver damage
[B] Kidney damage
[C] Heart attack
[D] Spleen damage
Show Answer
Correct Answer: B [Kidney damage]
Notes:
Generally, a high blood urea nitrogen level means your kidneys aren’t working well. But elevated blood urea nitrogen can also be due to: Urinary tract obstruction, congestive heart failure or recent heart attack.
13. Match List I with List II and select the correct answer using the codes given below the Lists:
Codes: (UPSC Prelims 2001)
[A] I-D, II-A, III-C, IV-B
[B] I-A, II-D, III-C, IV-B
[C] I-A, II-D, III-B, IV-C
[D] I-D, II-A, III-B, IV-C
Show Answer
Correct Answer: D [I-D, II-A, III-B, IV-C]
Notes:
The clavicle or collarbone is a long bone that serves as a strut between the shoulder blade and the sternum or breastbone. There are two clavicles, one on the left and one on the right. The clavicle is the only long bone in the body that lies horizontally.
The patella, also known as the kneecap, is a flat, circular-triangular bone which articulates with the femur (thigh bone) and covers and protects the anterior articular surface of the knee joint.
The scapula, or shoulder blade, is a large triangular-shaped bone that lies in the upper back.
The sternum or breastbone is a long flat bone located in the central part of the chest. It connects to the ribs via cartilage and forms the front of the rib cage, thus helping to protect the heart, lungs, and major blood vessels from injury.
14. In the branch of biology, what is the transmission of paternal traits to progeny called?
[A] Genetics
[B] Heredity
[C] Gerontology
[D] Genetic Engineering
Show Answer
Correct Answer: B [Heredity]
Notes:
The transmission of characteristics from parent to offspring is called heredity, and can be inferred from inherited characteristics.
15. Which of the following branch of biology deals with the cultivation, management, and study of individual trees, shrubs, vines, and other perennial woody plants?
[A] Agriforestry
[B] Horticulture
[C] Arboriculture
[D] Forestry
Show Answer
Correct Answer: C [Arboriculture]
Notes:
Arboriculture is the cultivation, management, and study of individual trees, shrubs, vines, and other perennial woody plants.
16. Which of the following branch of biology deals with the study of mycoplasma?
[A] Mycoplasmology
[B] Limnology
[C] Ethnobotony
[D] None of these
Show Answer
Correct Answer: A [Mycoplasmology]
Notes:
Mycoplasma is a genus of bacteria that do not have a cell wall surrounding the cell membrane.
17. Who gave theory of photosynthesis?
[A] Maurice Hilleman
[B] Jack Horner
[C] Jan Ingenhousz
[D] Franz Mesmer
Show Answer
Correct Answer: C [Jan Ingenhousz]
Notes:
Jan Ingenhausen is a Dutch-born British physician and scientist, best known for his discovery of the process of photosynthesis, by which green plants absorb carbon dioxide and release oxygen in sunlight.
18. How many of the following blood cells are there in the human body?
[A] 25 trillion
[B] 15 trillion
[C] 35 trillion
[D] 55 trillion
Show Answer
Correct Answer: A [25 trillion]
Notes:
Adult humans have an average of about 25 trillion RBCs in their bodies. Women usually have fewer RBCs than men
19. Which of the following includes ‘club fungus’ in this fungal division?
[A] Zygomycota
[B] Deuteromycota
[C] Basidiomycota
[D] Ascomycota
Show Answer
Correct Answer: C [Basidiomycota]
Notes:
Basidiomycota is one of the two larger divisions. Together with the Ascomycota, they constitute the subfamily Dicarya within the kingdom Fungi.
20. Which of the following is the proof of the aquatic origin of bryophytes?
[A] Ciliated sperms
[B] Green colour
[C] Protonema thread
[D] Some are still aquatic
Show Answer
Correct Answer: A [Ciliated sperms]
Notes:
Ciliated sperms are proof of the aquatic origin of bryophytes.
