31. GM rice is enriched with which of the following vitamin?
[A] K
[B] E
[C] A
[D] D
Show Answer
Correct Answer: C [A]
Notes:
GM rice is enriched with vitamins A. Genetically modified rice are strains of rice that have been genetically modified.
32. Who among the following invented Bt cotton?
[A] Ernst Berliner
[B] James Black
[C] Erwin Chargaff
[D] Rachel Carson
Show Answer
Correct Answer: A [Ernst Berliner]
Notes:
Ernst Berliner invented Bt cotton. Genetically modified by the insertion of one or more genes from a common soil bacterium, Bacillus thuringiensis, known as Bt cotton.
33. In winter, at the time of hibernation, Toads maintain breathing through ____:
[A] Lungs
[B] Skin
[C] Both by Skin and Lungs
[D] Buccal cavity
Show Answer
Correct Answer: B [Skin]
Notes:
During hibernation in winter, toads or frogs spend the time tucked away deep in the soil, in the mud underwater or hidden amidst foliage or rotting plants. Outside of times of hibernation, they usually take in oxygen via the air, employing their lungs. However, during hibernation, they receive their necessary oxygen through their permeable skin. This is referred to as cutaneous gas exchange.
34. In females, the uterus is ____:
[A] Single
[B] Double
[C] Triple
[D] Quadruple
Show Answer
Correct Answer: A [Single]
Notes:
Females have single uterus. Also known as womb, it is a major female hormone-responsive reproductive sex organ of humans and most other mammals. It is within the uterus that the fetus develops during gestation.
35. The development of a fruit without fertilization is called ____:
[A] Apomixis
[B] Parthenocarpy
[C] Hybridogenesis
[D] Gametogamy
Show Answer
Correct Answer: B [Parthenocarpy]
Notes:
Parthenocarpy is the development of fruit without fertilization of seeds. In nature, parthenocarpy occurs as a mutation. Another biological mechanism stenospermacarpy also produces seedless fruits, but here the seeds are aborted while they are still small. In nature, parthenocarpy occurs as a mutation. Some plants require pollination or stimulation for parthenocarpy. This is known as stimulative parthenocarpy.
36. Haemoglobin has highest affinity for ____:
[A] Carbon monoxide
[B] Nitrogen
[C] Oxygen
[D] Carbon dioxide
Show Answer
Correct Answer: C [Oxygen]
Notes:
Haemoglobin is the iron-containing oxygen-transport metaloprotein in the red blood cells. It is responsible for binding oxygen in the lung and transporting the oxygen throughout the body to be used up in aerobic metabolic pathways.
37. Which of the following pairs is correctly matched?
[A] Vitamin-B : Rickets
[B] Vitamin-A : Scurvy
[C] Vitamin-E : Reproduction
[D] Vitamin-C: Night-blindness
Show Answer
Correct Answer: C [Vitamin-E : Reproduction]
Notes:
Vitamin E is a fat soluble vitamin that is essential in many physiological processes. It plays an important role in the health and maintenance of proper reproductive system function. Without vitamin E the body cannot reproduce. It is also essential during pregnancy and is needed for the proper health and development of the fetus.
38. An enzyme produced by HIV that allows the integration of HIV DNA into the host cells DNA is ____:
[A] Ligase
[B] Integrase
[C] Helicase
[D] DNA gyrase
Show Answer
Correct Answer: B [Integrase]
Notes:
HIV’s enzyme for inserting the DNA version of its genome into the host cell DNA is called its “integrase”. HIV-1 integrase catalyzes the “cut-and-paste” action of clipping the host DNA and joining the proviral genome to the clipped ends. It is also produced by viruses containing double-stranded DNAs for the same purpose.
39. The chicory powder which is mixed with coffee powder is obtained from which of the following part of plant?
[A] Root
[B] Fruit
[C] Stem
[D] Flower
Show Answer
Correct Answer: A [Root]
Notes:
Chicory powder is made from the root of the chicory plant, Dithorium intybus. The root is dried, roasted, and ground up, to produce a naturally decaffeinated dark brown powder. Chicory’s flavour is similar to that of coffee, although it tastes a bit more roasted and has a sweeter aroma.
40. Conglobate gland is a leaf like structure found in ____:
[A] Male Ascaris
[B] Male Cockroach
[C] Female Cockroach
[D] Female Ascaris
Show Answer
Correct Answer: B [Male Cockroach]
Notes:
Conglobate gland is a leaf like, median, unbranched gland of male cockroach. It lies below the ejaculatory duct and open into the genital pouch close to the male genital aperture.
