31. The female Reproductive System creates egg cells that are essential for reproduction known as __
[A] Menstrual Cycle
[B] Pregnancy
[C] Fertilization
[D] Ova
Show Answer
Correct Answer: D [Ova]
Notes:
The female Reproductive System creates egg cells that are essential for reproduction known as Ova.
32. The nutritive medium for the ejaculated sperms is given by which of the following?
[A] fallopian tube
[B] vaginal fluid
[C] seminal fluid
[D] uterine lining
Show Answer
Correct Answer: C [seminal fluid]
Notes:
The nutrient medium for ejaculated spermatozoa is provided by seminal fluid.
33. Which of the following are the causes of red water?
[A] Clostridium hemolyticum
[B] Achromobacter anitratum
[C] Escherichia coli
[D] Salmonella typhimurium
Show Answer
Correct Answer: A [Clostridium hemolyticum]
Notes:
Clostridium hemolytic are the causes of red water disease. Redwater disease in cattle is caused by a protozoan blood parasite in the erythrocytes.
34. Mendel did not give __.
[A] Concept of genes
[B] Concept of inheritance
[C] Concept of dominance
[D] Concept of chromosomes
Show Answer
Correct Answer: D [Concept of chromosomes]
Notes:
Mendel did not give the Concept of chromosomes. The chromosomal theory of inheritance was given by Boveri and Sutton.
35. A process in which earthworms convert organic waste into manure rich in high nutritional content is called
[A] Farmyard manure
[B] Bio Compost
[C] Vermicomposting
[D] Green manure
Show Answer
Correct Answer: C [Vermicomposting]
Notes:
A process in which earthworms convert organic waste into manure rich in high nutritional content is called Vermicomposting.
36. Approximately how many pairs are there in the human genome?
[A] 6 billion base pairs
[B] 5 billion base pairs
[C] 3 billion base pairs
[D] 4 billion base pairs
Show Answer
Correct Answer: C [3 billion base pairs]
Notes:
Approximately 3 billion base pairs are there in the human genome. The complete set of nucleic acid sequences for humans encoded as DNA within 23 chromosome pairs in the cell nucleus and a small DNA molecule found within individual mitochondria is called the human genome.
37. Which of the following is not a connective tissue?
[A] Cardiac Muscle
[B] Areolar Tissue
[C] Compact Bone
[D] Adipose Tissue
Show Answer
Correct Answer: A [Cardiac Muscle]
Notes:
Connective tissue is a group of tissues in the body that maintain the form of the body and its organs and provide cohesion and internal support. Bone, ligaments, tendons, cartilage, and adipose (fat) tissue are examples of connective tissue. Cardiac muscle is an example of muscle tissue. It is so named because it is found in the heart.
38. The largest White Blood Corpuscle is ____:
[A] Lymphocyte
[B] Monocyte
[C] Thrombocyte
[D] Erythrocyte
Show Answer
Correct Answer: B [Monocyte]
Notes:
Monocytes are the largest white blood cell about 20m in diameter. When they leave the blood they’re called macrophages. Macrophages work with lymphocytes as antigen presenting cells.
39. Barr body is found in ____:
[A] Female somatic cells
[B] Male somatic cells
[C] Sertoli cells
[D] Sperm
Show Answer
Correct Answer: A [Female somatic cells]
Notes:
A Barr body is the inactive X chromosome in a female somatic cell in those species in which sex is determined by the presence of the Y or W chromosome rather than the diploidy of the X or Z. A typical human female has only one Barr body per somatic cell, while a typical human male has none.
40. Which of the following microorganisms is used in milk curdling?
[A] Bacillus
[B] Lactobacillus
[C] Leuconostoc
[D] Acetobacter
Show Answer
Correct Answer: B [Lactobacillus]
Notes:
Lactobacillus acidiphilous is used in milk curdling by producing lactic acid and reducing the pH of the milk. These bacteria convert the lactose into lactic acid, which imparts the sour taste to curd. It is a genus of Gram positive facultative anaerobic or microaerophilic rod-shaped bacteria.
