1. What is the main function of Lymphocytes?
[A] Production of Antibodies
[B] Production of Antigens
[C] Production of White Blood Cells
[D] All of the above
Show Answer
Correct Answer: A [Production of Antibodies]
Notes:
Lymphocytes are a type of white blood cell that are part of the immune system. Their main function is to produce antibodies that protect the body from foreign invaders, such as viruses, bacteria, and toxins. These antibodies help the body respond to and eliminate foreign invaders, which provides protection against infectious diseases.
Lymphocytes also help the body’s immune system remember every antigen it comes in contact with. After an encounter, some lymphocytes turn into memory cells.
There are two main types of lymphocytes: B cells and T cells. B cells produce antibodies that attack invading bacteria, viruses, and toxins. T cells destroy the body’s own cells that have been taken over.
If you have low numbers of lymphocytes (lymphopenia), you are at higher risk of infection. Symptoms can range from mild to serious and are correlated to the severity of the lymphopenia as well as its duration. Some people have no symptoms.
2. Which among the following is the correct location of Adrenal Glands in Human Body?
[A] Above kidneys
[B] Below kidneys
[C] Above Medulla Oblongata
[D] Near Pancreases
Show Answer
Correct Answer: A [Above kidneys]
Notes:
Each adrenal gland is located on the top of each kidney (forming a hat-like structure on the top of the kidneys). Each adrenal gland has two parts viz. outer cortical portion and inner adrenal cortex. Further, there is a central part called adrenal medulla.
3. Which of the following disease is found in ground nut?
[A] Downy mildew
[B] Bunt
[C] Ikki
[D] None of the above
Show Answer
Correct Answer: C [Ikki]
Notes:
Ikki disease is found in ground nut. Groundnut is taxonomically classified as Arachis hypogaea, is a legume crop grown mainly for its edible seeds. It is widely grown in the tropics and subtropics.
4. The pitcher plant is characterized by which of the following plants ?
[A] Autotrophes
[B] Insectivorous
[C] Allergen
[D] None of the above
Show Answer
Correct Answer: B [Insectivorous]
Notes:
The pitcher plant is characterized as insectivorous. Pitcher plants are several different carnivorous plants. They have modified leaves known as pitfall traps which is a prey-trapping mechanism featuring a deep cavity filled with digestive liquid.
5. From which part of the plant Glycyrrhiza glabra , Liquorice or Mulethi is obtained?
[A] Leaves
[B] Roots
[C] Fruits
[D] Stem
Show Answer
Correct Answer: B [Roots]
Notes:
Mulethi is powdered liquorice root and is an effective expectorant used since ancient times in Ayurvedic medicines. Its is also used in Jastimadhu which is a tooth powder. many cough syrups today contain Liquorice as an ingredient. It is also used in mouth ulcers and peptic ulcers.
6. Which among the following is found in a Bacteriophage?
[A] only RNA
[B] only DNA
[C] Both RNA & DNA
[D] Either RNA or DNA
Show Answer
Correct Answer: D [Either RNA or DNA]
Notes:
Either RNA or DNA is found in a Bacteriophage. A bacteriophage which is also informally known as a phage, is a virus that infects and replicates within bacteria and archaea.
7. The Gram Positive Bacteria can be identified by the Gram staining because of the following reasons?
[A] The cell walls have more lipids compared to peptidoglycan
[B] The Cells walls have more Peptidoglycan compared to Lipids
[C] The Cells membrane has more fatty acids
[D] The plasma has Peptidoglycans
Show Answer
Correct Answer: B [The Cells walls have more Peptidoglycan compared to Lipids]
Notes:
The cell wall which is made up of Peptidoglycan as well as lipids gets violet due to the reaction of the CV+. After the decolorization with alcohol, the lipids gets dissolved and the bacteria with higher Peptidoglycan remain violet. These are called Gram Positive bacteria.
8. What is the average life of the Red Blood corpuscles?
[A] 100-120 days
[B] 120-140 days
[C] 80-95 days
[D] 70-85 days
Show Answer
Correct Answer: A [100-120 days]
Notes:
The average life of the Red Blood corpuscles is 100-120 days. Red blood cells are also known as red cells, red blood corpuscles, haematids, erythroid cells or erythrocytes.
9. Which among the following have a ‘mixed heart’ ,that is the heart in which the oxygenated and the deoxygenated blood is mixed?
[A] Birds
[B] Fishes
[C] Reptiles
[D] Nematodes
Show Answer
Correct Answer: C [Reptiles]
Notes:
Reptiles and Amphibians have a mixed heart.
10. The greatest degree of genetic variability would be expected among organisms that reproduce via__?
[A] Budding
[B] Sporulation
[C] Sexual Recombination
[D] Vegetative Propagation
Show Answer
Correct Answer: C [ Sexual Recombination]
Notes:
Genetic variability is usually due to a mutation during meiosis (sexual reproduction). In the above question, the answer choices (B) and (D) are examples of asexual reproduction. They create identical offspring.
