31. Our sense of smell also helps us to recognize which of the following?
[A] tastes
[B] temperature
[C] environment
[D] time
Show Answer
Correct Answer: A [tastes]
Notes:
Our sense of smell also helps us to recognize tastes.
32. Why is excretion a vital process in the human body?
- It helps to remove waste products from the body.
- It helps in maintaining the body’s internal environment by regulating chemical composition.
- It aids in the synthesis of crucial biomolecules.
- It generates energy by breaking down food substances.
Select the correct option from the codes given below:
[A] Only 1 & 2
[B] Only 2 & 3
[C] Only 1, 2 & 3
[D] 1, 2, 3 & 4
Show Answer
Correct Answer: A [Only 1 & 2]
Notes:
Excretion is a vital process as it removes waste products from the body and helps in maintaining the body’s internal environment by regulating the chemical composition of blood and other bodily fluids. It does not aid in the synthesis of crucial biomolecules or generate energy by breaking down food substances, which are processes associated with metabolism and digestion, respectively.
33. What is the largest part of the alimentary canal?
[A] Large Intestine
[B] Small Intestine
[C] Liver
[D] Stomach
Show Answer
Correct Answer: B [Small Intestine]
Notes:
The Small Intestine is the largest part of the alimentary canal. The small intestine has divided into three parts: the duodenum, jejunum, and ileum
34. What is the shape of the stomach?
[A] J – shaped
[B] S – shaped
[C] O – shaped
[D] None of these
Show Answer
Correct Answer: A [J – shaped]
Notes:
The stomach is a J-shaped organ and is present on the left side of the abdomen.
35. Colour blindness is an __ linked recessive trait.
[A] Z chromosome
[B] Y chromosome
[C] X chromosome
[D] None of these
Show Answer
Correct Answer: C [X chromosome]
Notes:
Usually, color blindness is inherited as a recessive trait on the X chromosome. This is known in genetics as X-linked recessive inheritance.
36. Which of the following is VAM?
[A] Bioinsecticide
[B] Bioherbicide
[C] Endomycorrhiza
[D] Ectomycorrhiza
Show Answer
Correct Answer: C [Endomycorrhiza]
Notes:
VAM is Vesicular Arbuscular Mycorrhizal. It is formed by the symbiotic association between certain phycomycetous fungi and angiosperm roots.
37. Which of the following nonpathogenic products is used in various crops as well as horticulture and ornamental plants?
[A] Azotobacter
[B] Fungi
[C] Tricho-Card
[D] None of these
Show Answer
Correct Answer: C [Tricho-Card]
Notes:
Tricho-Card is a nonpathogenic product that is used in various crops as well as horticulture and ornamental plants.
38. Who was the father of the green revolution?
[A] Verghese Kurien
[B] Herbert Boyer
[C] Har Gobind Korana
[D] Norman Borlaug
Show Answer
Correct Answer: D [Norman Borlaug]
Notes:
Norman Borlaug was the father of the green revolution.
39. Which of the following is the first GM crop in India?
[A] mustard
[B] brinjal
[C] potato
[D] None of these
Show Answer
Correct Answer: B [brinjal]
Notes:
Brinjal is the first GM crop in India. Genetically modified crops are plants used in agriculture and the DNA of which has been modified using genetic engineering methods.
40. 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.
