31. What is the function of the vena cava in the excretory system?
[A] form a network between the arteries to veins
[B] return deoxygenated blood from the body and the head to the heart
[C] Both 1 and 2
[D] None of these
Show Answer
Correct Answer: B [return deoxygenated blood from the body and the head to the heart]
Notes:
The vena cava returns deoxygenated blood from the body and head to the heart.
32. Complete digestion of food takes place in:
[A] Stomach
[B] Small Intestine
[C] Pancreas
[D] Large Intestine
Show Answer
Correct Answer: B [Small Intestine]
Notes:
Complete digestion of food takes place in Small Intestine. The small intestine carries out most of the digestion process, absorbing almost all of the nutrients from foods into your bloodstream.
33. Which of the following is not pure endocrine gland?
[A] Thyroid gland
[B] Thymus gland
[C] Pancreas
[D] Adrenal
Show Answer
Correct Answer: C [Pancreas]
Notes:
The pancreas and gonads are two glands that are not pure endocrine. The pancreas secretes both hormones and enzymes and acts as both endocrine and exocrine.
34. 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.
35. Ovum receives the sperm in the region of__
[A] Animal pole
[B] the Equator
[C] Vegetal pole
[D] Pigmented area
Show Answer
Correct Answer: C [Vegetal pole]
Notes:
Ovum receives the sperm in the region of the Vegetal pole. An embryo is divided into two hemispheres: the animal ovule and the vegetative pole within a blastula.
36. Dirofilariasis is another name for an infection of which parasite?
[A] Heartworm
[B] Roundworm
[C] Hookworm
[D] Tapeworm
Show Answer
Correct Answer: A [Heartworm]
Notes:
Dirofilariasis is a disease caused by Dirofilaria worm infection. Dirofilaria immitis are also known as heartworm or dog heartworm.
37. Haemophilia is caused by __
[A] Bacteria
[B] Virus
[C] Genetic mutation
[D] Cause unknown
Show Answer
Correct Answer: C [Genetic mutation]
Notes:
Haemophilia is called bleeder disease. It is a disorder that is linked to sex and is a recurring condition. Blood does not clot in a patient with hemophilia.
38. Which of the following is green manure?
[A] Rice
[B] Sorghum
[C] Maize
[D] Sesbania
Show Answer
Correct Answer: D [Sesbania]
Notes:
Sesbania is green manure. Sesbania is a leguminous crop. It is commonly used as a green manure crop to add nitrogen and organic matter to the soil.
39. The conversion of N2 to ammonia is known as __
[A] Nitrification
[B] Nitrogen fixation
[C] Ammonification
[D] Denitrification
Show Answer
Correct Answer: B [Nitrogen fixation]
Notes:
The conversion of N2 to ammonia is known as Nitrogen fixation.
40. Which of the following initiates replication in DNA?
[A] DNA ligase
[B] Origin of replication
[C] Termination sequences
[D] Histone proteins
Show Answer
Correct Answer: B [Origin of replication]
Notes:
A chromosome contains the specific DNA sequence, called the origin of replication, which is responsible for initiating replication. DNA ligase is an enzyme. It helps in binding the DNA. Termination sequence is the site where DNA replication ends while histones are the proteins around which DNA is wound.
