(d) Compost
Ans: (d)
470. Milk fever in cows occurs due to lack of
      (a) Phosphates
      (b) Calcium
      (c) Iron
      (d) Iodine
Ans: (a)
471. Which among the following is a Cast growing tree?
      (a) Teak
      (b) Eucalyptus
      (c) Banyan
      (d) Coconut
Ans: (b)
472. Mouth and foot diseases in cattle are caused by
      (a) Bacteria
      (b) Virus
      (c) Fungi
      (d) Pennicilium
Ans: (b)
473. The age of a tree can be determined by
      (a) counting the number of annual rings
      (b) thickness of the bark
      (c) the bulk of the tree
      (d) the number of leaves
Ans: (a)
474. Which one of the following animals stores water in the intestine?
      (a) Moloch
      (b) Camel
      (c) Zebra
      (d) Uromastix
Ans: (b)
475. Bats can fly in the dark because
      (a) they have a better vision in the dark
      (b) the light startles them
      (c) they produce high pitched sounds called ultrasonics
      (d) None of the above
Ans: (c)
476. Bovine Spongiform Encephalopathy refers to
      (a) Brain Fever
      (b) Mad Cow Disease
      (c) Enteric Fever
      (d) Poultry Diarrhoea
Ans: (b)
477. The heart of the human embryo starts beating in the _____ week of its development.
      (a) second
      (b) third
      (c) fourth
      (d) first
Ans: (b)
478. The two minerals required to keep teeth and bones intact and in good condition are
      (a) lead and zinc
      (b) calcium and phosphorus
      (c) copper and sulphur
      (d) iron and iodine
Ans: (b)
479. Vitamins A and C are predominantly present in
      (a) brinjal
      (b) lady"s finger
      (c) potato
      (d) tomato