11. Which of the following is the name given to the complete conversion of glucose In the presence of oxygen into carbon dioxide and water with release of energy?
[A] aerobic respiration
[B] anaerobic respiration
[C] glycolysis
[D] hydrolysis
Show Answer
Correct Answer: A [aerobic respiration]
Notes:
In the cell, the food (glucose) is broken down into carbon dioxide and water using oxygen. When breakdown of glucose occurs with the use of oxygen it is called aerobic respiration. With the formula: (C6H12O6) + 6O2 = (6CO2) + 6H2O + E.
12. Haemophilia is a genetic disorder that leads to which of the following conditions?
[A] Decrease in haemoglobin level
[B] rheumatic heart disease
[C] decrease in WBC
[D] non-clotting of blood
Show Answer
Correct Answer: D [non-clotting of blood]
Notes:
Hemophilia is a mostly inherited genetic disorder that impairs the body’s ability to make blood clots, a process needed to stop bleeding. Rarely a new mutation may occur during early development or haemophilia may develop later in life due to antibodies forming against a clotting factor.
13. To which of the following kingdoms does the yeast belong to?
[A] Bacteria
[B] Virus
[C] Fungus
[D] None of the above.
Show Answer
Correct Answer: C [Fungus]
Notes:
Yeast is an unicellular eukaryotic micro organism belonging to the family of fungus.
14. Except which one is not useful in the treatment of viruses?
[A] acyclovir
[B] interferon
[C] penicillin
[D] antibodies
Show Answer
Correct Answer: C [penicillin]
Notes:
Acyclovir is a synthetic guanosine analog. It is used to treat herpes simplex virus (HSV) and varicella zoster virus (VZV) infections. Antibiotics are useless against viral infections.
15. Volvox is a common example of which of the following?
[A] Thallophyta
[B] Bryophyta
[C] Pteridophyta
[D] Angiosperms
Show Answer
Correct Answer: A [Thallophyta]
Notes:
Volvox is a common example of Thallophyta.
16. Which of the following does not have a complete cell wall?
[A] blue-green algae
[B] Saccharomyces
[C] sea fan
[D] cyanobacteria
Show Answer
Correct Answer: C [sea fan]
Notes:
Sea fan does not have a complete cell wall. The sea fan is an animal belonging to the phylum Coelenterata. Not all animals have a cell wall.
17. The sporophytic generation is represented only by the zygote__?
[A] Funaria
[B] Chlamydomonas
[C] Pinus
[D] Pinus
Show Answer
Correct Answer: B [Chlamydomonas]
Notes:
Important Features of Chlamydomonas: The plant body is unicellular, pear-shaped, and biflagellate, Each cell typically contains a cup-shaped chloroplast, an eye sac, and two contractile vacuoles, Pamela-stage appearance, Asexual reproduction occurs through biflagellate zoospore formation.
18. A bryophyte that has nitrogen-fixing blue-green algae in its thallus is__?
[A] Pogonatum
[B] Riccia
[C] Marchantia
[D] Anthoceros
Show Answer
Correct Answer: D [Anthoceros]
Notes:
A bryophyte that has nitrogen-fixing blue-green algae in its thallus is Anthoceros. Species of Anthoceros have a small to medium-sized green thallus.
19. Which plant tissue consists of phloem and xylem?
[A] Complex Permanent Tissue
[B] Simple Permanent Tissue
[C] Parenchyma Tissue
[D] Collenchyma Tissue
Show Answer
Correct Answer: A [Complex Permanent Tissue]
Notes:
Complex Permanent Tissue tissues include phloem and xylem. Xylem helps in the transport of water and soluble components.
Phloem helps in the transportation of food particles.
20. The process of development of fruit without any prior fertilization is called__.
[A] Asexual reproduction
[B] Parthenocarpy
[C] Apomixis
[D] Sexual reproduction
Show Answer
Correct Answer: B [Parthenocarpy]
Notes:
The process of development of fruit without any prior fertilization is called Parthenocarpy. Pineapple, banana, cucumber, grape, watermelon, orange, grapefruit, pear, fig are some examples of Parthenocarpy.
