11. In which among the following plants, seeds germinate and seedlings grow while still attached to their mother plant?
[A] Onion
[B] Rhizophora
[C] Sheesham
[D] Cycas
Show Answer
Correct Answer: B [ Rhizophora]
Notes:
The phenomenon is found in Mangrove Plants and is known as Vivipary and Rhizophora belongs to that category.
12. In which of the following class can we put Adrenaline?
[A] Fat
[B] Hormone
[C] Enzyme
[D] Protein
Show Answer
Correct Answer: B [Hormone]
Notes:
Adrenaline, also known as epinephrine, is a hormone, neurotransmitter, and medication. Adrenaline is normally produced by both the adrenal glands and certain neurons.
13. Which of the following causes Dysentery and Influenza?
[A] Bacteria
[B] Viruses
[C] Bacteria and Viruses respectively
[D] Viruses and Bacteria respectively
Show Answer
Correct Answer: C [Bacteria and Viruses respectively]
Notes:
Causes range from bacteria, viruses, and parasites to food reactions and unclean water. The flu comes with symptoms like fever, congestion, muscle aches, and fatigue. The cause is the influenza virus. More severe cases can lead to life-threatening illnesses like pneumonia.
14. Mitochondrial DNA in an individual comes from which of the following sources? (UPSC Prelims 1991)
[A] Male parent
[B] Female parent
[C] Both parents
[D] Neither of the parents
Show Answer
Correct Answer: C [Both parents]
Notes:
Mitochondrial DNA is the small circular chromosome found inside mitochondria. The mitochondria, and thus mitochondrial DNA, are passed almost exclusively from mother to offspring through the egg cell. Electron microscopy reveals mitochondrial DNA in discrete foci.
15. Which among the following is not a part of Vitamin B complex?
[A] Vitamin B2
[B] Vitamin B4
[C] Vitamin B6
[D] Vitamin B12
Show Answer
Correct Answer: B [Vitamin B4]
Notes:
Vitamin B complex consists of 8 vitamins namely B1(Thiamine), B2(Riboflavin), B3(Niacin), B5(Pantothenic acid), B6(Pyridoxine), B7(Biotin), B9(Folate/Folic acid) and B12(Cobalamin).
16. To which of the following kingdoms does the yeast belong to?
[A] Bacteria
[B] Virus
[C] Fungus
[D] None of the above.
Show Answer
Correct Answer: C [Fungus]
Notes:
Yeast is an unicellular eukaryotic micro organism belonging to the family of fungus.
17. Bacteria used in making of chocolate__?
[A] Lactobacillus bucheri
[B] Lactobacillus cacaonum
[C] monosodium glutamate
[D] Lactobacillus casei
Show Answer
Correct Answer: B [Lactobacillus cacaonum]
Notes:
Lactobacillus cacaonum is a bacteria used in the food packaging industry for making chocolates. Lactobacillus bucheri is helpful in making wine. Lactobacillus casei is used in making cheese. Monosodium glutamate is used in Chinese food to enhance taste.
18. Algae cell wall is made up of which of the following?
[A] Chitin
[B] Cutin
[C] Cellulose
[D] Suberin
Show Answer
Correct Answer: C [Cellulose]
Notes:
The Algae cell wall is made up of Cellulose.
19. Pollination is the process in which pollen grains are transferred from anther to ___.
[A] Stigma
[B] Anther
[C] Pistil
[D] Sepals
Show Answer
Correct Answer: A [Stigma]
Notes:
Pollination is the process in which pollen grains are transferred from anther to Stigma.
20. Downy mildew disease is caused by which of the following?
[A] Fungus
[B] Bacteria
[C] Virus
[D] None of these
Show Answer
Correct Answer: A [Fungus]
Notes:
Downy mildew disease is caused by Fungus (Pseudoperonospora cubensis). Downy mildew can infect all cucumbers, including cucumbers, melons, pumpkins, and squash.
