11. Who among the following devised the Technique IVF(In vitro Fertilization)?
[A] Robert Edwards
[B] Dr. Martin Cooper
[C] Edward Jenner
[D] Sir Frank Whittle
Show Answer
Correct Answer: A [Robert Edwards]
Notes:
The early influences on Robert Edwards’ approach to the scientific research that led to human IVF are described. He founded the first IVF programme for infertile patients and trained other scientists in their techniques.
12. Which among the following is more required by the Growing children?
[A] Proteins
[B] Carbohydrates
[C] Vitamins
[D] All of these
Show Answer
Correct Answer: A [Proteins]
Notes:
Growing kids need protein to help them build and repair cells, enzymes, and hormones, and, as a last resort, to provide energy. Protein foods also help form new blood cells and body tissues, and they help the nervous system function properly.
13. A person walking barefooted in a field feels a sharp sting and on examination two puncture marks are found on his leg. He is most probably bitten by which of the following ages?
[A] Poisonous snake
[B] Non-poisonous snake
[C] Scorpion
[D] Rat
Show Answer
Correct Answer: A [Poisonous snake]
Notes:
Snakebite is an injury caused by the bite of a snake, especially a venomous snake. A common sign of a bite from a venomous snake is the presence of two puncture wounds from the animal’s fangs. Those bitten may also describe a “sharp”, “rubbery”, “minty”, or “metallic” taste if bitten.
14. ‘Lathyrism’ is a crippling disease caused by eating which of the following?
[A] Tinned fish
[B] Chick pea and pulses
[C] Meat
[D] Adulterated oil
Show Answer
Correct Answer: B [Chick pea and pulses]
Notes:
The lathyrism resulting from the ingestion of Lathyrus odoratus seeds (Chick pea and pulses) is often referred to as odoratism or osteolathyrism, which is caused by a different toxin (beta-aminopropionitrile) that affects the linking of collagen, a protein of connective tissues.
15. The sensation of fatigue in the muscles after prolonged strenuous physical work is caused by?
[A] a decrease in the supply of oxygen
[B] minor wear and tear of muscle fibres
[C] the depletion of glucose
[D] the accumulation of lactic acid
Show Answer
Correct Answer: D [the accumulation of lactic acid]
Notes:
The sensation of fatigue which the muscles feel after a prolonged and a strenuous physical workout is caused by the accumulation of lactic acid.
This is so because lactic acid buildup tends to cause fatigue and soreness in the muscles.
There is a burning sensation felt up in the muscles when buildup of acid happens in muscles during exercise. This is also known as acidosis.
16. In a bisexual flower, if androecium and gynaecium mature at different times, which of the following is the name given to the phenomenon?
[A] Dichogamy
[B] Herkogamy
[C] Heterogamy
[D] Monogamy
Show Answer
Correct Answer: A [Dichogamy]
Notes:
Dichogamy is the condition in which the male and female reproductive organs of a flower mature at different times, thereby ensuring that self-fertilization does not occur.
17. Which one among the following is not a good source of nutritional calcium?
[A] Rice
[B] Ragi
[C] Skimmed milk
[D] Egg
Show Answer
Correct Answer: B [Ragi]
Notes:
Ragi contains only 344 mg of calcium and in 100 gm of ragi protein is 7.3 gm., fat 1.3 gm, fibre 3.6 gms, carbohydrates 72 gms, moisture 13.1 gm.
18. Chromosome Theory of Inheritance was proposed by __?
[A] Pier Antonio Micheli
[B] Louis Pasteur
[C] Stephen Hales
[D] Thomas Hunt Morgan
Show Answer
Correct Answer: D [Thomas Hunt Morgan]
Notes:
The chromosomal theory of inheritance, or the idea that genes are located on chromosomes, was proposed based on the experiments of Thomas Hunt Morgan.
19. Which of the following is not a part of the three kingdom Classification by Ernest Haeckel?
[A] Plantae
[B] Protista
[C] Animalia
[D] Monera
Show Answer
Correct Answer: D [Monera]
Notes:
The Three Kingdom of Classification includes Plantae, Protista and Animalia. It was proposed by Ernest Haeckel.
20. What is the process in which material is ingested by the cells through the plasma membrane?
[A] Egestion
[B] Diffusion
[C] Osmosis
[D] Endocytosis
Show Answer
Correct Answer: D [Endocytosis]
Notes:
Endocytosis is the process in which the ingestion of material by the cells is carried out through the plasma membrane.
