11. 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.
12. ‘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.
13. 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.
14. At which stage in its life-cycle does the silkworm yield the fibre of commerce?
[A] Egg
[B] Larva
[C] Pupa
[D] Imago
Show Answer
Correct Answer: C [Pupa]
Notes:
Silk worm yield the fibre from pupa stage, which is commercially used to produce clothes.
15. In a bisexual flower, if androecium and gynaecium mature at different times, what is the name given to the phenomenon?
[A] Dichogamy
[B] Herkogamy
[C] Heterogamy
[D] Monogamy
Show Answer
Correct Answer: A [Dichogamy]
Notes:
Dichogamy 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.
16.
Who among the following is considered to be the father of Comparative Anatomy?
[A] Georges Cuvier
[B] Stephen Hales
[C] Hugo de Vries
[D] Edwin John Butler
Show Answer
Correct Answer: A [Georges Cuvier]
Notes:
Georges Cuvier is considered to be the father of Comparative Anatomy.
17. In which group maximum nutritional diversity is found?
[A] Monera
[B] Plantae
[C] Fungi
[D] Animalia
Show Answer
Correct Answer: A [Monera]
Notes:
The state of Monera has the highest nutritional diversity. Photoautotrophic, chemoautotrophic and heterotrophic have all possible types of nutrition
18. Which of the following class of leucoplasts is responsible for fat storage?
[A] Amyloplast
[B] Proteinoplasts
[C] Aleuroplasts
[D] Elaioplasts
Show Answer
Correct Answer: D [Elaioplasts]
Notes:
Leucoplast is colorless or non-pigmented in nature. It is used for storage. Amyloplasts store starch, proteinoplasts and aleuroplasts as well as modify proteins.
19. 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.
20. Protein is made up of which of the following?
[A] Sugar
[B] Amino acid
[C] Carbohydrate
[D] Fatty acid
Show Answer
Correct Answer: B [Amino acid
]
Notes:
All proteins are linked by a peptide link and are polymers of amino acids. Amino acid is the building block of protein.
