11. Which Vitamin is obtained from Sun rays?
[A] Vitamin C
[B] Vitamin D
[C] Vitamin K
[D] Vitamin A
Show Answer
Correct Answer: B [Vitamin D]
Notes:
Human skin can make large amounts of vitamin D when lots of skin is exposed and the sun is high in the sky. Your body is designed to get the vitamin D it needs by producing it when your bare skin is exposed to sunlight.
12. Which of the following is not an element of the bone?
[A] Calcium
[B] Phosphorus
[C] Carbon
[D] Oxygen
Show Answer
Correct Answer: C [Carbon]
Notes:
Bones consist of living cells embedded in a mineralized organic matrix. This matrix consists of organic components, mainly type I collagen – “organic” referring to materials produced as a result of the human body – and inorganic components, primarily hydroxyapatite and other salts of calcium and phosphate.
13. Which among the following branches of science deals with the scientific study of interaction of soils with vegetative matter?
[A] Pedology
[B] Petrology
[C] Hydrology
[D] Edaphology
Show Answer
Correct Answer: D [Edaphology]
Notes:
Edaphology is one of the two branches of soil sciences which deals with the scientific study of influence of soils on the vegetative matter such as plants.
14. Which among the following are female sex harmones?
[A] Estrogen
[B] Progesterone
[C] Testosterone
[D] Both a and b
Show Answer
Correct Answer: D [Both a and b]
Notes:
Estrogen and progesterone are the female sex harmones. Estrogen is responsible for the development of secondary sexual characteristics. Progesterone supports during pregnancy and controls the menstrual cycles in women.
15. 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.
16. In which of the following organisms is the nuclear membrane absent?
[A] Nostoc
[B] Volvox
[C] Agaricus
[D] Penicillium
Show Answer
Correct Answer: A [Nostoc]
Notes:
Nostoc, also known as star jelly, troll’s butter, witch’s butter, and witch’s jelly, is a genus of cyanobacteria. Nostoc does not have a nuclear membrane. This is a characteristic of prokaryotic cells, which lack a nucleus. The genetic material in these cells is found in the cytoplasm, not enclosed within a nuclear membrane. On the contrary, Volvox, Agaricus, and Penicillium are all eukaryotic organisms, hence possess a nuclear membrane.
17. Which disinfectant is effective against viruses?
[A] Hydrogen peroxide
[B] Hypochlorite
[C] Formaldehyde
[D] All of these
Show Answer
Correct Answer: D [All of these]
Notes:
Hydrogen peroxide, Hypochlorite and Formaldehyde are disinfectants is effective against viruses.
18. Viral DNA is removed from the host’s chromosomes and the lytic cycle is called which of the following process?
[A] spontaneous induction
[B] inductive infection
[C] resultant induction
[D] spontaneous infection
Show Answer
Correct Answer: A [spontaneous induction]
Notes:
Viral DNA is removed from the host’s chromosomes and the lytic cycle is called spontaneous induction.
19. Angiosperms are the main plant because__?
[A] Domestication by man
[B] Power of adapting in diverse habitats
[C] Self-pollination property
[D] Property of producing a large number of seeds
Show Answer
Correct Answer: B [Power of adapting in diverse habitats]
Notes:
Angiosperms are plants that produce flowers. They hold their seeds in the fruits. They are the largest and most diverse group within the Plantae kingdom, with approximately 300,000 species.
20. Which of the following is not caused by bacteria?
[A] Typhoid
[B] Tetanus
[C] Plague
[D] Chicken pox
Show Answer
Correct Answer: D [Chicken pox]
Notes:
Chickenpox is a contagious disease caused by the varicella-zoster virus (VZV).
