Page 162 - Understanding NCERT Science 09

Q uestions

1. How are fish obtained?
2. What are the advantages of
composite fish culture?

Activity _____________12.5

(a) (b)
• Visit a fish farm in fish breeding
season and note the following:
(1) Varieties of fish in fish farm Fig. 12.7: (a) Arrangement of beehive in an apiary
(2) Types of ponds (b) honey extractor
(3) Feed ingredients used
(4) Production capacity of the farm This is the variety commonly used for
If there are no fish farms close to your commercial honey production.
locality, gather the above information from The Italian bees have high honey collection
Internet, by referring books or talking to capacity. They sting somewhat less. They stay
people who are engaged in fishery.
in a given beehive for long periods, and breed
very well. For commercial honey production,
12.2.4 BEE-KEEPING
bee farms or apiaries are established.
Honey is widely used and therefore bee- The value or quality of honey depends
keeping for making honey has become an upon the pasturage, or the flowers available
agricultural enterprise. Since bee-keeping to the bees for nectar and pollen collection.
needs low investments, farmers use it as an In addition to adequate quantity of pasturage,
additional income generating activity. In the kind of flowers available will determine
addition to honey, the beehives are a source the taste of the honey.
of wax which is used in various medicinal
preparations. uestions
The local varieties of bees used for
commercial honey production are Apis cerana 1. What are the desirable
indica, commonly known as the Indian bee, Q characters of bee varieties
A. dorsata, the rock bee and A. florae, the little suitable for honey production?
bee. An Italian bee variety, A. mellifera, has 2. What is pasturage and how is it
also been brought in to increase yield of honey. related to honey production?

What

you have

learnt

• There are several nutrients essential for crops. Of these,
some are required in large quantities and are known as
macro-nutrients whereas rest of the nutrients are required
in small quantities and are known as micro-nutrients.
• Manure and fertilizers are the main sources of nutrient
supply to crops.
• Organic farming is a farming system with minimal or no use
of chemicals as fertilizers, herbicides, pesticides etc. and

150 SCIENCE

Rationalised 2023-24