11. Bile is secreted by which of the following organs?
[A] Liver
[B] Gall bladder
[C] Kidney
[D] Pancreas
Show Answer
Correct Answer: A [Liver]
Notes:
Bile or gall is a dark green to yellowish brown fluid, produced by the liver of most vertebrates that aids the digestion of lipids in the small intestine. In humans, bile is produced continuously by the liver and stored and concentrated in the gallbladder.
12. In which of the following diseases Sex chromosomes transmit?
[A] Myopia
[B] Colour blindness
[C] Longsightedness
[D] Night blindness
Show Answer
Correct Answer: B [Colour blindness]
Notes:
It is sex-linked that genetic red-green color blindness affects males much more often than females, because the genes for the red and green color receptors are located on the X chromosome, of which males have only one and females have two.
13. A man whose blood group is not known meets with a serious accident and needs blood transfusion immediately. Which one of the blood groups mentioned below and readily available in the hospital will be safe for transfusion?
[A] O, Rh-
[B] O, Rh+
[C] AB, Rh-
[D] AB, Rh+
Show Answer
Correct Answer: B [O, Rh+]
Notes:
There is no A and B antigen on RBC of “O– ”bloodgroup , So O, Rh– is known as universal blood donor.
14. The branch of biology dealing with the study of fungi is known as__?
[A] Phycology
[B] Mycology
[C] Cytology
[D] None of these
Show Answer
Correct Answer: B [Mycology]
Notes:
Mycology is the branch of biology that deals with the study of fungi, including their genetic and biochemical properties.
15. Leslie Orgel was known for discovering which of the following?
[A] life was based on RNA
[B] life was based on protien
[C] life was based on DNA
[D] None of these
Show Answer
Correct Answer: A [life was based on RNA]
Notes:
In the late 1960s, Orgel proposed that life was based on RNA before being based on DNA or proteins. His theory included genes based on RNA and RNA enzymes.
16. In which group maximum nutritional diversity is found?
[A] Monera
[B] Plantae
[C] Fungi
[D] Animalia
Show Answer
Correct Answer: A [Monera]
Notes:
The state of Monera has the highest nutritional diversity. Photoautotrophic, chemoautotrophic and heterotrophic have all possible types of nutrition
17. Which of the following protects the body from infectious disease?
[A] Leukocytes
[B] Red Blood Cells
[C] Endoplasmic Reticulum
[D] Golgi Bodies
Show Answer
Correct Answer: A [Leukocytes]
Notes:
White blood cells (WBC), also called leukocytes or leukocytes. Immune system cells that help protect our body from infectious diseases.
18. Protein is made up of which of the following?
[A] Sugar
[B] Amino acid
[C] Carbohydrate
[D] Fatty acid
Show Answer
Correct Answer: B [Amino acid
]
Notes:
All proteins are linked by a peptide link and are polymers of amino acids. Amino acid is the building block of protein.
19. Volvox is a common example of which of the following?
[A] Thallophyta
[B] Bryophyta
[C] Pteridophyta
[D] Angiosperms
Show Answer
Correct Answer: A [Thallophyta]
Notes:
Volvox is a common example of Thallophyta.
20. Which type of cocci bacteria forms a cluster and irregular pattern?
[A] Staphylococci
[B] Diplococci
[C] Tetracocci
[D] Streptococci
Show Answer
Correct Answer: A [Staphylococci]
Notes:
Staphylococci are the correct answer here. They are known for forming grape-like clusters and irregular patterns. These are gram-positive cocci, or spherical bacteria, that belong to the family Micrococcaceae. Members of the Micrococcaceae family such as Staphylococcus, Micrococcus, and Kocuria, are ubiquitous in nature and are typically harmless, often residing on the skin and mucous membranes of humans and other mammals.
