1. Which of the following Vitamin is required for Normal Blood Circulation ?
[A] Vitamin A
[B] Vitamin K
[C] Vitamin D
[D] Vitamin E
Show Answer
Correct Answer: B [Vitamin K]
Notes:
Vitamin K is required for Normal Blood Circulation. Vitamin K is a fat-soluble vitamin which plays a key role in helping the blood clot, preventing excessive bleeding.
2. In which of the following diseases , nerve cells are affected?
[A] Tetanus
[B] Polio
[C] Whooping Cough
[D] Diphtheria
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Correct Answer: B [Polio]
Notes:
Nerve cells are affected in Polio. Polio also known as poliomyelitis, is a disabling and life-threatening disease caused by the poliovirus. The virus spreads from person to person and can infect a person’s spinal cord, causing paralysis.
3. Lacrimal apparatus, Lacrimal artery, Lacrimal bone, Lacrimal ducts, Lacrimal fossa, Lacrimal fluid & Lacrimal gland are parts of which organ of the body?
[A] Ear
[B] Nose
[C] Eye
[D] Throat
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Correct Answer: C [Eye]
Notes:
These are parts of lacrimal apparatus in eye which is responsible for tear production and drainage.
4. Meg-1 is an imprinted gene which finds expression only from maternal chromosomes which regulates the transfer of nutrients from the plant to the seed. This gene has been discovered in :
[A] Maize
[B] cotton
[C] jute
[D] Sugarcane
Show Answer
Correct Answer: A [Maize]
Notes:
Meg-1 gene was developed in Maize. It is an imprinted gene which finds expression only from maternal chromosomes which regulates the transfer of nutrients from the plant to the seed.
5. The relationship between algae and fungi is an example of _?
[A] Symbiotic
[B] Parasitism
[C] Mutualism
[D] Commensalism
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Correct Answer: A [ Symbiotic ]
Notes:
First option is the correct answer
Symbiotic relationships are a special type of interaction between species. Sometimes beneficial, sometimes harmful, these relationships are essential to many organisms and ecosystems. Mutualism is when both organisms involved are benefitted.
6. With reference to classification of the animals, which among the following groups represents Elasmobranchs?
[A] Shark, Skates and Rays
[B] Shark, Rays and Dolphins
[C] Shark, Skates and Dolphins
[D] Skates, Dolphins and Rays
Show Answer
Correct Answer: A [ Shark, Skates and Rays]
Notes:
The term Elasmobranches is a collective name for the sharks, skates and rays. Elasmobranches have a skeleton made of cartilage, no swim bladders and rough skin made up of small dermal dentils. Elasmobranches are renowned for their highly tuned senses.
7. Which of the following is not a feature of organisms in the class Mammalia ?
[A] milk producing mammary glands
[B] cells with a membrane-bounded nucleus
[C] dorsal hollow nerve chord
[D] chitin in the cell membrane
Show Answer
Correct Answer: D [ chitin in the cell membrane ]
Notes:
Organisms in the class Mammalia all have milk producing mammary glands; cells with a membrane-bounded nucleus and a dorsal hollow nerve cord. Chitin in Cell Walls is the feature of Kingdom fungi.
8. Which of the following is the largest cell in mammalian blood?
[A] Erythrocytes
[B] Monocytes
[C] Lymphocytes
[D] Basophils
Show Answer
Correct Answer: B [Monocytes]
Notes:
Monocytes are a type of white blood cell that fights off bacteria, viruses and fungi. Monocytes are the biggest type of white blood cell in the immune system. Originally formed in the bone marrow, they are released into our blood and tissues. When certain germs enter the body, they quickly rush to the site for attack.
9. How does the Hybridisation develop improved crops?
[A] Creating new and better genes
[B] Eliminating undesirable genes
[C] Producing favourable combination of genes
[D] By encouraging favourable genes and removing unfavourable ones
Show Answer
Correct Answer: C [Producing favourable combination of genes]
Notes:
Hybridization is beneficial for improvement in crop production as the Hybrid variety of crops have some special characteristics like good resistance to diseases, improved yield, etc. so they are often sought to have a high production.
10. Which of the following crops has the highest photosynthetic activity?
[A] Cotton
[B] Sugarcane
[C] Rice
[D] Wheat
Show Answer
Correct Answer: B [Sugarcane]
Notes:
Among the above all, the sugarcane has the highest photosynthetic activity. Photosynthesis is a chemical process that occurs in many forms of bacteria and virtually all plants, including aquatic plants and algae. The rate of photosynthesis in a plant is dependent on the environmental changes, as well as to intrinsic features of plant. The photosynthetic rate in sugarcane is directly related with the variation of solar radiation during the day.
