31. Which gland is helpful in increasing blood calcium levels?
[A] Thymus gland
[B] Thyroid gland
[C] Pineal gland
[D] Parathyroid gland
Show Answer
Correct Answer: D [Parathyroid gland]
Notes:
The parathyroid gland is helpful in increasing blood calcium levels. These glands consist of four small glands that are located behind the thyroid in the neck.
32. Which of the following is called Mendel’s first law of inheritance?
[A] Law of Dominance
[B] Law of Segregation
[C] Law of Independent Assortment
[D] All of the above
Show Answer
Correct Answer: A [Law of Dominance]
Notes:
The law of dominance is also called Mendel’s first law of inheritance. According to this, the hybrid offspring will only inherit the dominant trait in the phenotype.
33. Which of the following section of DNA provides information for one protein?
[A] Nucleus
[B] Chromosomes
[C] Trait
[D] Gene
Show Answer
Correct Answer: D [Gene]
Notes:
The Gene of DNA provides information for one protein. This is the basic physical and functional unit of heredity.
34. The smallest unit of genetic material that produces a phenotypic effect on mutation is called?
[A] Muton
[B] Gene
[C] Recon
[D] Nucleic acid
Show Answer
Correct Answer: A [Muton]
Notes:
The smallest unit of genetic material that produces a phenotypic effect on mutation is called Muton.
35. Some strains of Bacillus thuringiensis can kill certain insects such as __.
[A] Lepidoptera
[B] scorpion
[C] fruit fly
[D] dragonfly
Show Answer
Correct Answer: A [Lepidoptera]
Notes:
Some strains of Bacillus thuringiensis can kill certain insects such as Lepidoptera. They are an order of insects consisting of moths and butterflies.
36. The part of brain which controls emotional reactions in our body is ____:
[A] Hypothalamus
[B] Meninges
[C] Cerebrum
[D] Thalamus
Show Answer
Correct Answer: A [Hypothalamus]
Notes:
The brain’s limbic system controls emotional expression through the hypothalamus, which has control over the body’s emotional responses systems. The hypothalamus is responsible for regulating hunger, thirst, response to pain, levels of pleasure, sexual satisfaction, anger and aggressive behavior, etc. It also regulates pulse, blood pressure, breathing, and arousal in response to emotional circumstances.
37. The vitamin which is very labile and easily destroyed during cooking as well as storage is vitamin ____:
[A] Vitamin D
[B] Vitamin C
[C] Vitamin K
[D] Vitamin B6
Show Answer
Correct Answer: B [Vitamin C]
Notes:
Vitamin C is quite unstable when cooked or stored improperly. It is very liable and easily destroyed during cooking as well as storage. It is a water-soluble and temperature-sensitive vitamin, so is easily degraded during cooking, and elevated temperatures and long cooking times have been found to cause particularly severe losses of vitamin C.
38. Jaws are absent in ____:
[A] Birds
[B] Fishes
[C] Reptiles
[D] Protochordata
Show Answer
Correct Answer: D [Protochordata]
Notes:
Jaws are absent in protochordata and cyclostomata (Agantho stoma). Protochordata refers to invertabrate subphylum of phylum chordata. It includes animals such as tunicates.
39. Which of the following vitamins are water soluble?
[A] Vitamin A and Vitamin B
[B] Vitamin B and Vitamin C
[C] Vitamin C and Vitamin D
[D] Vitamin A and Vitamin D
Show Answer
Correct Answer: B [Vitamin B and Vitamin C]
Notes:
Vitamins are classified as either fat soluble (vitamins A, D, E and K) or water soluble (vitamins B and C).The fat soluble vitamins are soluble in lipids (fats); water-soluble vitamins are those that dissolve in water upon entering the body. Because of this, our body cannot store excess amounts of water-soluble vitamins for later use.
40. Which of these bones is not a part of the human ear?
[A] Incus
[B] Stapes
[C] Femur
[D] Malleus
Show Answer
Correct Answer: C [Femur]
Notes:
There are three tiny bones in the middle ear of human. These are the malleus or hammer the incus or anvil and the stapes or stirrup. The femur is the only bone located within the human thigh. It is both the longest and the strongest bone in the human body.
