The term 'genetically modified organism' (GMO) refers to: MCQ with Answer and Explanation

Question
The term 'genetically modified organism' (GMO) refers to:
A. An organism produced by selective breeding
B. A hybrid organism produced by cross-pollination
C. A cloned organism
D. An organism whose DNA has been altered using genetic engineering
Answer: Option D
Solution (By JKExamLibrary)
GMOs are organisms whose genetic material has been modified through recombinant DNA technology, introducing or deleting specific genes. Selective breeding and cross-pollination are traditional methods that do not directly manipulate DNA. Cloning produces genetically identical copies without necessarily altering the genome. Examples: Bt cotton, Golden rice.
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Question #1
The normal human body temperature is about:
A. 39°C
B. 40°C
C. 37°C
D. 35°C
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Correct Answer: Option C

Explanation:
The average normal oral temperature is around 37°C (98.6°F). It is maintained by the hypothalamus through thermoregulation.
This question belongs to: Science Biology
Question #2
Who was the first scientist to observe bacteria using a single-lens microscope?
A. Louis Pasteur
B. Joseph Lister
C. Robert Hooke
D. Antonie van Leeuwenhoek
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Correct Answer: Option D

Explanation:
Antonie van Leeuwenhoek (1670s) constructed high-quality single-lens microscopes and was the first to observe bacteria, protozoa, sperm cells, and red blood cells, describing them as 'animalcules'. Hooke observed cells in cork. Pasteur disproved spontaneous generation, Lister introduced antiseptic surgery. Leeuwenhoek's pioneering work laid the foundation for microbiology.
This question belongs to: Science Biology
Question #3
Which of the following is an example of a saprophytic angiosperm?
A. Drosera
B. Cuscuta
C. Pitcher plant
D. Monotropa
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Correct Answer: Option D

Explanation:
Monotropa (Indian pipe) is a saprophytic angiosperm that obtains nutrition from dead organic matter through mycorrhizal association. Cuscuta is a parasitic plant (dodder), Drosera (sundew) and pitcher plant are insectivorous plants. Saprophytes lack chlorophyll and are heterotrophic. Monotropa belongs to the family Ericaceae. Saprophytism is uncommon in angiosperms.
This question belongs to: Science Biology
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