31. Into how many parts is the Urinary bladder divided?
[A] One
[B] Two
[C] Three
[D] Four
Show Answer
Correct Answer: D [Four]
Notes:
The Urinary bladder is divided into 4 parts. They are abroad corpuscle, a body, a vertex, a neck.
32. The undigested food stored in the liver in the form of carbohydrates is called __
[A] Pulp
[B] Glucose
[C] Glycogen
[D] Carbohydrate
Show Answer
Correct Answer: C [Glycogen]
Notes:
Glycogen is the undigested food stored in the liver in the form of carbohydrates.
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 of the following is a highly contagious bacterial disease of cattle?
[A] Mastitis
[B] Anthrax
[C] Pneumonia
[D] Typhoid
Show Answer
Correct Answer: B [Anthrax]
Notes:
Anthrax is a highly contagious bacterial disease of cattle. Its caused by rod-shaped bacterium called Bacillus anthracis.
35. Which of the following disease is transmitted by animal bite and saliva?
[A] Rabies
[B] Tuberculosis
[C] Tetanus
[D] AIDS
Show Answer
Correct Answer: A [Rabies]
Notes:
Rabies disease is transmitted by animal bites and saliva.
36. An animal, plant, or micro-organism whose DNA has been altered using genetic engineering techniques is called?
[A] Genetically Matured Organisms
[B] Genetically Mental Organs
[C] Genetically Modified Organisms
[D] Genetically Mutant Organism
Show Answer
Correct Answer: C [Genetically Modified Organisms]
Notes:
An animal, plant, or micro-organism whose DNA has been altered using genetic engineering techniques is called Genetically Modified Organisms.
37. Which of the following organism can transfer ‘T-DNA’ within plants?
[A] Agrobacterium tumifaciens
[B] E.coli
[C] Aspergillus niger
[D] S. typhi
Show Answer
Correct Answer: A [Agrobacterium tumifaciens]
Notes:
Agrobacterium tumefacient organism can transfer ‘T-DNA’ within the plant. It infects dicot plants.
38. Which of the following protein is found in nails?
[A] Keratin
[B] Histone
[C] Actin
[D] Elastin
Show Answer
Correct Answer: A [Keratin]
Notes:
Keratin is a family of fibrous structural proteins that is the key structural component of hair and nails. It is also the key structural material making up the outer layer of human skin. Besides, it provides the necessary strength and toughness for masticatory organs, such as the tongue.
39. A cross between homozygous recessive and heterozygous plant is
____:
[A] Back cross
[B] Test cross
[C] Monohybrid cross
[D] Dihybrid cross
Show Answer
Correct Answer: B [Test cross]
Notes:
A cross between a homozygous plant with recessive traits and a heterozygous plant is known as a test cross. A test cross is a valuable tool in predicting the genotype of the organism in question. In its simplest form, a test cross is an experimental cross of an individual organism of dominant phenotype but unknown genotype and an organism with a homozygous recessive genotype (and phenotype). Test cross is done to determine the genotype of an F2 generation plant, showing dominant characteristics. In the test cross, an F2 plant that shows the dominant trait is crossed with the homozygous recessive.
40. The hydrophilic nature of DNA is due to the presence of ____:
[A] A number of hydrogen bonds
[B] Phosphate group
[C] Thymine base
[D] Deoxyribose sugar
Show Answer
Correct Answer: A [A number of hydrogen bonds]
Notes:
The phosphate groups on DNA are ionic and charged. Each phosphate group on the DNA backbone has one unit of negative charge (-1). Charged molecules attract water and are hydrophilic. DNA has two hydrophilic polar external backbones made of sugars and phosphate groups joined by ester bonds. Therefore, DNA as nucleic acid is characterized by presence of phosphodiester bond.
