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461.

Most common disease of poultry in India is
(a)Fowl pox
(b)Tick fever
(c)Ranikhet
(d)Coryza
Comment
Answer is: C

462.

Ptyalin is an enzyme produced in the
(a)Salivary glands
(b)Thyroid glands
(c)Pancreas
(d)Pituitary glands
Comment
Answer is: A

463.

Nitrogen is fixed in ecosystems in ways stated below.
Which statements is false?
(a)By electrical discharges in the atmosphere
(b)By industrially synthesised fertilizer
(c)By denitrification
(d)By cyanobacteria
Comment
Answer is: C

464.

The pollen grains in plants are produced in
(a)Flower
(b)Roots
(c)Stem
(d)Leaves
Comment
Answer is: A

465.

Pollination due to wind is called
(a)Hydrophily
(b)Anemophily
(c)Entomophily
(d)Zoophily
Comment
Answer is: B

466.

Mutation is
(a)A change which affects the offspring of F2 generation only
(b)A change that is inherited
(c)A change which affects the parents
(d)A factor responsible for plant growth
Comment
Answer is: B

467.

Oxyreductases, transferases, hydrolases, lyases, isomerases and ligases are all classes of
(a)Enzymes
(b)Hormones
(c)Vitamins
(d)Proteins
Comment
Answer is: A

468.

Radish is a
(a)Bulb B). conn C). modified root D). tuber
(b)Modified root
(c)Tuber
(d)Conn
Comment
Answer is: B

469.

Outer covering of virus produce of protein is
(a)Capsid
(b)Virion
(c)Coat
(d)Viriod
Comment
Answer is: A

470.

Movements due to light are shown by
(a)Flowering plants
(b)Lower plants
(c)All land plants
(d)All the plants
Comment
Answer is: A

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