1. Plasmodium falciparum, which causes malaria in humans is kept in which among the following groups?
[A] Bacteria
[B] Viruses
[C] Protozoans
[D] Fungi
Show Answer
Correct Answer: C [Protozoans]
Notes:
Plasmodium, a tiny protozoan is responsible for malarial disease. Different species of Plasmodium (P. vivax, P. malaria and P. falciparum) are responsible for different types of malaria. Of these, malignant malaria caused by Plasmodium falciparum is the most serious one and can even be fatal.
2. In which organ RBC are selectively destroyed/ recycled by macrophages?
[A] Spleen
[B] Kidney
[C] Liver
[D] Pancreas
Show Answer
Correct Answer: A [Spleen]
Notes:
The spleen, which is located under the ribcage and above the stomach in the left upper quadrant of the abdomen is the largest organ in the lymphatic system. It is that organ where RBC are selectively destroyed/ recycled by macrophages.
3. Sugar , Amino Acids, & Nucleotides are constituents of respectively ___________ ?
[A] Polysaccharides, Proteins. Nucleic Acids,
[B] Proteins, Carbohydrates , Fats
[C] Nucleic Acids. Proteins, Polysaccharides
[D] Polysaccharides, Nucleic Acids. Proteins,
Show Answer
Correct Answer: A [Polysaccharides, Proteins. Nucleic Acids,]
Notes:
Sugar, Amino Acids, & Nucleotides are constituents of respectively Polysaccharides, Proteins and Nucleic Acids. Nucleotides are organic molecules which are the building blocks of nucleic acids.
4. The correct group of animals that suffer from the “Foot & Mouth ” disease is as follows:
[A] Only Cattle
[B] Cattle & Sheeps
[C] Cattle and Pigs
[D] Cattle, Sheeps and Pigs
Show Answer
Correct Answer: D [Cattle, Sheeps and Pigs]
Notes:
Foot and mouth disease (FMD) or hoof and mouth disease (HMD) is an infectious and sometimes fatal viral disease that affects cloven-hoofed animals. Cattle, Sheeps and Pigs are affected by the Foot & Mouth disease.
5. Which of the following is the correct definition of the Primary Productivity?
[A] Rate of photosynthesis in plants and photosynthetic bacteria as compared to the rate of plant consumption by herbivores
[B] Total amount of light energy converted to organic compounds in a given area per unit time.
[C] Rate of decomposition by the detritivores.
[D] Total biomass of the photosynthetic organisms in the ecosystem.
Show Answer
Correct Answer: B [ Total amount of light energy converted to organic compounds in a given area per unit time.]
Notes:
B is the correct answer.
6. In humans, fertilization normally occurs in __?
[A] Ovary
[B] Fallopian Tube
[C] Uterus
[D] Placenta
Show Answer
Correct Answer: B [ Fallopian Tube]
Notes:
In humans, fertilization normally occurs in the fallopian tube. The ovary is the female gonad that contains the eggs. The uterus is the organ that houses the developing embryo. The placenta is the structure that nourishes the embryo.
7. Which of the following diseases is caused by consumption of a wheat bread contaminated with a fungus called Claviceps purpurea?
[A] Lathyrism
[B] Ergotism
[C] Cinchonism
[D] Mushroom Poisoning
Show Answer
Correct Answer: B [ Ergotism]
Notes:
Cleviceps purpurea is an important ascomycete that grows on the grains of rye grass cereals. It produces the drug ergot, which is both a severe poison and a useful medicinal drug. It affects the central nervous system as well as causes the contraction of involuntary muscle. Ergotism, caused by eating infected rye bread, was common in the Middle Ages, when it was known as “St. Anthony’s Fire.
8. Consider the following pairs:
- Nyctalopia – It is caused due to deficiency of Vitamin A
- Pellagra – It is caused due to deficiency of Vitamin B3
- Rickets – It is caused due to deficiency of Vitamin D
Which of the above is/are correct?
[A] 1 & 2 Only
[B] 2 Only
[C] 2 & 3 Only
[D] 1, 2 & 3
Show Answer
Correct Answer: D [1, 2 & 3]
Notes:
All of the above are correct
9. Which of the following is a fibrous protein?
[A] Enzymes
[B] Keratin
[C] Haemoglobin
[D] Albumin
Show Answer
Correct Answer: B [Keratin]
Notes:
Keratin is a group of fibrous proteins occurring in hair, feathers, hooves, and horns. Keratins have coiled polypeptide chains that combine to form supercoils of several polypeptides linked by disulphide bonds between adjacent cysteine amino acids.
10. Which of the following is the largest invertebrate?
[A] Arthropod
[B] Echinoderm
[C] Mollusc
[D] Sponge
Show Answer
Correct Answer: C [Mollusc]
Notes:
Molluscs, such as squid, cuttlefish and octopus, are among the most neurologically advanced of all invertebrates—and either the giant squid or the colossal squid is the largest known invertebrate species.
