1. Amino acids join together to make polypeptides. What polypeptides make by joining together?
[A] Carbohydrates
[B] proteins
[C] vitamins
[D] All the above
Show Answer
Correct Answer: B [proteins]
Notes:
Proteins are made up of chains of amino acids bound by bonds called peptide bond. There are some 22 different known amino acids which can compose proteins. There may be many more unknown to us.
2. “Karnal bunt” is a disease found in which if the following cereals?
[A] Rice
[B] Wheat
[C] Maize
[D] Pulses
Show Answer
Correct Answer: B [Wheat]
Notes:
Karnal bunt is a fungal disease of wheat, durum wheat, and triticale. T. indica is the fungal pathogen causing Karnal bunt of wheat seeds. Its distribution is mainly limited to northwest India and adjoining countries.
3. Japanese encephalitis is a disease caused by __ ?
[A] Virus
[B] Protozoa
[C] Bacteria
[D] Fungi
Show Answer
Correct Answer: A [Virus]
Notes:
Japanese encephalitis is caused by virus from the family Flaviviridae. It’s a Mosquito Borne Disease
4. Which among the following is true attribute to Polar bear?
[A] Herbivore
[B] Omnivore
[C] Carnivore
[D] Marsupial
Show Answer
Correct Answer: C [Carnivore]
Notes:
Please note that Polar Bear is the largest land carnivore animal, weighing about 350 to 700 kgs.
Kodiak bear which is also of same size is a Omnivore
5. The foramen of Monro is associated with _?
[A] Central nervous system
[B] Digestive system
[C] Respiratory system
[D] Excretory system
Show Answer
Correct Answer: A [ Central nervous system]
Notes:
The interventricular foramen is also known as foramen of Monro. It is a part of the ventricular system and the connection between the third ventricle and the lateral ventricles.
6. Which of the following ecosystems showcases the highest biodiversity?
[A] Mangroves
[B] Deserts
[C] Coral Reefs
[D] Alpine Meadows
Show Answer
Correct Answer: C [Coral Reefs]
Notes:
The Coral Reef ecosystem showcases the highest biodiversity among the options provided. This is due to the ideal tropical environment in which they exist, offering a wide range of habitats, shelter, and nourishment for an astonishing array of marine life. In terms of biodiversity, they are second only to tropical rainforests. Interestingly, despite covering less than 1% of the ocean floor, coral reefs support about 25% of all known marine species.
7. Which process enables the Peepal tree to release oxygen at night?
[A] Crassulacean Acid Metabolism
[B] C3 Photosynthesis
[C] C4 Photosynthesis
[D] Carbon cycle re-balancing
Show Answer
Correct Answer: A [Crassulacean Acid Metabolism]
Notes:
The Peepal tree uses Crassulacean Acid Metabolism (CAM) photosynthesis, allowing CO₂ uptake at night and oxygen release, a trait seen in some succulents and epiphytes to minimize water loss. CAM enables the Peepal to continue gas exchange during the night, unlike typical C3 or C4 plants.
8. Which among the following are found in all viruses?
[A] DNA and proteins
[B] Nucleic acid and capsid
[C] DNA and cell membrane
[D] RNA and cell wall
Show Answer
Correct Answer: B [ Nucleic acid and capsid]
Notes:
Viruses are made up of nucleic acid (either DNA or RNA; but not both) surrounded by a protein coat called a capsid. They do not contain a cell wall, proteins, or cell membrane
9. With reference to classification of the flora and fauna, the meaning of term “Taxon” is __?
[A] A group of same species
[B] A group of organisms with same chromosome number
[C] A group of category of organisms
[D] A group of same genera
Show Answer
Correct Answer: C [ A group of category of organisms]
Notes:
In biology, a taxon (plural taxa; back-formation from taxonomy) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit.
10. Which of the following drug is an antihistamine?
[A] Dimetapp
[B] Seldane
[C] Cetrizine
[D] All of the above
Show Answer
Correct Answer: D [ All of the above]
Notes:
All of the above belongs to a class of drugs known as antihistamines. They interfere with the natural action of histamine by competing with histamine for binding sites of receptor where histamine exerts its effect.
