Available Answers

1. 1.

   Choose the correct word to fill in the blank.

   1. ____________ (Flacherie/Pebrine) disease is caused in silkworms by a protozoan Nosema bombycis.
   2. American foulbrood is a disease caused in ______________  (honeybees/poultry).
   3. Fishes are protected from diseases by their efficient _____________ (organ/immune) systems and scales.
   4. Avian ____________ (influenza/Aspergillosis) in birds is caused by the virus H5N1.
2. 2.

   Name the following:

   1. Crops that are cultivated for selling the products derived from them, or for other economic gains.
   2. Fungi used to produce alcoholic beverages.
   3. Bacteria used to produce curd from milk.
   4. Common silkworm used for producing silk.
3. 3.

   Give technical terms for the following.

   1. The large scale cultivation of flowers.
   2. Round or oval, white to yellowish white struetures from which silk fibres are produced.
   3. Young ones that hatch from the eggs of fishes.
   4. Chickens that are reared specifically for their meat.
   5. The fungus used in the industrial preparation of citric acid.
   6. A disease of livestock which causes high fever and the appearance of nodules on the skin.
4. 4.

   Write T for True and F for False Correct the False statements:

   1. Acetobacteraceti is a fungus that produces citric acid.
   2. Honey and beeswax are important products obtained from sericulture.
   3. Fishes that have grown into adults are transferred to the stocking tank.
   4. The acidic pH in fish tanks prevents the growth of parasites.
   5. Ammonia poisoning occurs in honeybees.
   6. Animals should be vaccinated to immunize them against disease.
5. 5.

   Choose the correct option to fill in the blank:

   1.  In grafting, the ___________ (stock/scion) is normally rooted and growing, while the ____________  (stock/scion) is attached to the top of the plant.
   2. Penicillin and ampicillin are _____________ (vaccines/antibiotics).
   3. _____________ (Bombyx/Bombycis) mori is the most common silk moth used for the production of silk.
   4. A man-made _____________ (beeswax/apiary) consists of wooden boxes stacked one on top of another.
   5. The waxy substance that makes up honeycombs is ____________ (royal jelly/ beeswax).
   6. An alkaline pH in fish ponds prevents ____________  (parasitic/vegetative) growth and speeds up organic decomposition.
6. 6.

   Cocoons are harvested within ten days of the pupal stage. Give reasons.