1. Which of the following correctly defines “Mother-of-pearl”?
[A] An oyster which yields the pearl
[B] A special large sized pearl found in Japan
[C] A hard iridescent substance forming the inner layer of certain shells
[D] Female individuals of certain species of shelled mollusk
Show Answer
Correct Answer: C [ A hard iridescent substance forming the inner layer of certain shells ]
Notes:
Nacre also known as mother of pearl, is an organic-inorganic composite material produced by some mollusks as an inner shell layer; it is also what makes up the outer coating of pearls. It is strong, resilient, and iridescent.
2. Opium is obtained from the dry latex from which part of the Papaver somniferum Plant?
[A] Stem
[B] Leaves
[C] Poppy
[D] Stem joints
Show Answer
Correct Answer: C [Poppy]
Notes:
Opium is dried latex which is obtained from the seed capsules of the opium poppy Papaver somniferum.
3. The edible part of ‘cabbage’ is which of the following?
[A] Inflorescence
[B] Bud
[C] fruit
[D] none of the above
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Correct Answer: B [Bud]
Notes:
The edible part of ‘cabbage’ is the vegetative bud. Vegetative buds are the buds from which vegetative parts like stems and leaves arise, rather than flowers.
4. Where does the formation of Urea takes place in our body ?
[A] Pancreas
[B] Kidney
[C] Liver
[D] Lungs
Show Answer
Correct Answer: C [Liver]
Notes:
The formation of Urea takes place in Liver. Urea which is also known as carbamide, is a waste product of many living organisms. It is the major organic component of human urine.
5. Which of the following places are main centers of silicosis and silico-tuberculosis diseases affecting the workers in India?
[A] Glass Factories
[B] Stone quarries and stone crushing factories
[C] Fireworks Factories
[D] Brick Kilns
Show Answer
Correct Answer: B [Stone quarries and stone crushing factories]
Notes:
Chronic exposure to silica increases workers risk of tuberculosis infection and aggravates pre-existing pulmonary tuberculosis. Therefore the workers working in the places like Stone quarries and stone crushing factories are mainly prone to silicosis and silico-tuberculosis diseases.
6. Which of the following plant growth hormone was recognized by Japanese scientists?
[A] Auxin
[B] Gibberellins
[C] Abscisic acid
[D] Cytokinin
Show Answer
Correct Answer: B [Gibberellins]
Notes:
Gibberellins, first recognized in 1926 by a Japanese scientist, Eiichi Kurosawa. He was studying foolish seedling disease in Rice called as bakanae
7. The term “Gypsophils” is associated with the people who have liking for which among the following?
[A] Vultures
[B] Eagles
[C] Hawks
[D] Falcons
Show Answer
Correct Answer: A [Vultures]
Notes:
The term “Gypsophils” is associated with the people who have liking for vultures.
8. Which among the following is most distantly related to other three animals?
[A] Walrus
[B] Sea Lion
[C] Seals
[D] Sperm whale
Show Answer
Correct Answer: D [ Sperm whale]
Notes:
Seals, Walruses and Sea lions are Mammals belonging to a single taxonomic group ( a clade) called Pinnipedia, which means fin footed. All of them are semi-aquatic marine mammals. They belong to the order Carnivora and their closest living relatives are bears. They are characterized by modification of limbs to flippers. Pinnipeds are mammals with four flippers — one pair in front and one at the back. They are warm-blooded, nurse their young, breathe air and have hair. The sea lion has small, tiny external ear flaps. Seals have no flaps. The front flippers of sea lions are long, have no hair and nails. Seals’ front flippers are short, blunt, covered with hair with nails on the ends. Sea lions can turn their hind flippers forward to move on land but seals cannot do so.
9. Cereals are a rich source of which of the following?
[A] Starch
[B] Maltose
[C] Glucose
[D] Fructose
Show Answer
Correct Answer: A [Starch]
Notes:
Cereals which are made with puffed or powdered rice and refined wheat typically contain starch. Starch is the most common form of carbohydrate and typically found in staple grains like rice, wheat, and corn.
10. Photosynthesis takes place in the presence of chlorophyll and which other substance?
[A] Water
[B] Nutrients
[C] Sunlight
[D] Carbon-dioxide
Show Answer
Correct Answer: C [Sunlight]
Notes:
Photosynthesis, process by which green plants and certain other organisms use the chlorophyll and energy of sunlight to convert carbon dioxide and water into the simple sugar glucose.