1. Which type of acid is predominantly found in fruits like Grapes, Bananas, and Tamarind?
[A] Lactic Acid
[B] Oxalic Acid
[C] Salicylic Acid
[D] Tartaric Acid
Show Answer
Correct Answer: D [Tartaric Acid]
Notes:
Tartaric acid is a white, crystalline organic acid that occurs naturally in many fruits, most notably in grapes, bananas, and tamarind. Tartaric acid is used in several food products for its sour taste and antioxidant properties. It has a very sour taste and is a key raw material for making wine, where it plays a vital role in maintaining the color, taste, and texture of the product.
2. Which among the following contributes to the replenishment of soil?
[A] Bacteria
[B] Fungi
[C] Algae
[D] Earthworm
Show Answer
Correct Answer: D [Earthworm]
Notes:
Earthworm contributes to the replenishment of soil. As the earthworm moves through the soil, it creates burrows. This allows air and water to move more readily through the soil. The worms also feed on the decaying organic matter, which helps to improve soil fertility.
3. Lipoproteins which are the large molecules and which transport the cholesterol in the bloodstream are ______-?
[A] protein molecules
[B] fat molecules
[C] protein and fat molecules
[D] Lipids
Show Answer
Correct Answer: C [protein and fat molecules]
Notes:
A lipoprotein is a biochemical assembly consisting of protein and fat molecules whose primary purpose is to transport hydrophobic lipid molecules in water, as in blood plasma or other extracellular fluids.
4. Who among the following is best known for his discovery and development of the first safe and effective polio vaccine.?
[A] Jonas Salk
[B] David Bodian
[C] Almroth Wright
[D] Albert Sabin
Show Answer
Correct Answer: A [Jonas Salk]
Notes:
Jonas Edward Salk was an American virologist and medical researcher who developed one of the first successful polio vaccines. He announced on a national radio show that he has successfully tested a vaccine against polio.
5. With which of the following animals Galton’s whistle is most commonly associated?
[A] Horses
[B] Dogs
[C] whales
[D] Shark
Show Answer
Correct Answer: B [Dogs]
Notes:
Human can listen only the frequencies below 20 kHz. However animals like dogs, cats, dolphins, bats, and mice can listen above this limit. This principle was used by Galton who produced the ultrasonic waves by blowing a whistle. For human these whistle appears silent, while dogs and cats can listen it. It is used in training of dogs and cats
6. Which of the following part of the body stores Vitamin A, Vitamin D as well as Vitamin B12?
[A] Brain
[B] Liver
[C] Pancreas
[D] Red Blood Cells
Show Answer
Correct Answer: B [Liver]
Notes:
Liver stores Vitamin A, Vitamin D as well as Vitamin B12. The bile juice secreted during digestion is essential for absorbing them so that the body can use them.
7. 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.
8. The useful part of Zingiber officinale is ____?
[A] Roots
[B] Rhizome
[C] Leaves
[D] fruits
Show Answer
Correct Answer: B [Rhizome]
Notes:
The useful part of Zingiber officinale is rhizome. It is a flowering plant whose rhizome, ginger root or ginger, is widely used as a spice and also as a medicine. It is a herbaceous perennial plant.
9. Which among the following nitrogenous wastes requires the least water for its excretion?
[A] Ammonia
[B] Urea
[C] Nitrites
[D] Uric Acid
Show Answer
Correct Answer: D [ Uric Acid]
Notes:
Uric acid is not soluble in water and is excreted as a dry crystal by the animal’s digestive system. Ammonia is the most toxic nitrogenous waste and must be excreted in large volumes of water.
10. Which of the following statements is incorrect about large intestine?
[A] It secretes a number of hormones
[B] Villi is absent in large intestine
[C] It takes part in the absorption of water from the indigestible residue
[D] The colon is also called the large intestine
Show Answer
Correct Answer: A [ It secretes a number of hormones]
Notes:
First statement is incorrect because secretion of hormones is absent in large intestine. Small intestine secretes hormones. Other three statements are correct.
