31. Which is the Growth hormone inhibiting hormone?
[A] FSH
[B] TRH
[C] GHRH
[D] Somatostatin
Show Answer
Correct Answer: D [Somatostatin]
Notes:
Somatostatin works against Growth Hormone (GHRH), hence it is known as Growth Inhibiting Hormone. It consists of two peptides of 14 and 28 amino acids and is released from neurosecretory nerves.
32. The Leydig cells which are found in the human body are the secretory source of __
[A] Glucagon
[B] Intestinal mucus
[C] Androgens
[D] Progesterone
Show Answer
Correct Answer: C [Androgens]
Notes:
The Leydig cells which are found in the human body are the secretory source of Androgens.
33. What disease is caused by Vibrio cholerae?
[A] Cholera
[B] Plague
[C] Tetanus
[D] Anthrax
Show Answer
Correct Answer: A [Cholera]
Notes:
Cholera disease is an acute diarrheal illness caused by Vibrio cholerae bacteria.
34. Which of the following test is used to diagnose Roundworm Infection?
[A] Widal Test
[B] Pap smear’s Test
[C] Gravidex Test
[D] Stool Test
Show Answer
Correct Answer: D [Stool Test]
Notes:
Stool Test is used to diagnose Roundworm Infection.
35. In most species, mitochondrial DNA is passed down from which of the following?
[A] DNA
[B] Mother and Father
[C] Father
[D] Mother
Show Answer
Correct Answer: D [Mother]
Notes:
In most of the species, mitochondrial DNA is passed down from Mother.
36. Which two ideas are included in the definition of biotechnology?
[A] Medical biotechnology and Agricultural biotechnology
[B] Traditional biotechnology and Modern molecular biotechnology
[C] Blue biotechnology and Red biotechnology
[D] Green biotechnology and Animal biotechnology
Show Answer
Correct Answer: B [Traditional biotechnology and Modern molecular biotechnology]
Notes:
Traditional biotechnology and Modern molecular biotechnology are two ideas included in the definition of biotechnology.
37. Saprophytes are the organisms which depend for food on
____:
[A] Inorganic chemical compounds
[B] Living plants
[C] Living animals
[D] Dead and decaying material
Show Answer
Correct Answer: D [Dead and decaying material]
Notes:
Saprophytes are the organisms which depend for food on dead and decaying material. They secrete digestive substances into the surrounding environment and break down the organic matter into simpler substances. The nutrients thus produced are absorbed directly through the cell membranes of the organisms.
38. The colour change in the Chameleon is due to the presence of ____:
[A] Chromatophore
[B] Haemoglobin
[C] Chlorophyll
[D] Pneumatophore
Show Answer
Correct Answer: A [Chromatophore]
Notes:
Chameleons have specialized cells, chromatophores, which contain pigments in their cytoplasm, in three layers below their transparent outer skin. Dispersion of the pigment granules in the chromatophores sets the intensity of each color. Chromatophores contain pigments and reflect light, which are responsible for creating coloration. In chameleons, there are four types of chromatophores: xanthophores, erythrophores, iridiophores, and melanophores (Cooper and Greenberg, 1992).
39. Hepatitis is a ____:
[A] Lung disease
[B] Liver disease
[C] Kidney disease
[D] Heart disease
Show Answer
Correct Answer: B [Liver disease]
Notes:
Hepatitis is a medical condition defined by the inflammation of the liver and characterized by the presence of inflammatory cells in the tissue of the organ. The condition can be self-limiting (healing on its own) or can progress to fibrosis (scarring) and cirrhosis.
40. Smut of wheat is caused by ____:
[A] Puccinia graminis
[B] Colletotrichum falcatum
[C] Ustilago maydis
[D] Ustilago tritici
Show Answer
Correct Answer: D [Ustilago tritici]
Notes:
Smut of wheat is caused by Ustilago tritici. Rust is caused by Puccinia grlaminae. Mild symptoms may be present prior to heading, including yellowish leaf streaks and stiff, dark green leaves. Affected plants head out early, producing sterile heads with clumped, sooty olive-black spores in place of healthy glumes and kernels.
