Production Of Food From Animals Class 8th Biology AP Board Solution

Class 8th Biology AP Board Solution

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Question 1.

One honey bee hive consists of different types of bees. What are they? How they differ from each other?


Answer:

Honey bee hive consist of three types of bees. These are queen, drones and workers. One queen, hundreds of male drones and thousands of workers. The main function of a queen is to lay eggs. She lays 800-1200 eggs per day. Drones function is to fertilize queen through mating. Worker bees collect nectar (sweet juice of the flower) from flowers for food to the colony members




Question 2.

Make a list of characters of local variety of buffaloes which give good quantity of milk in your village?


Answer:

Murrah is the well-known local variety of Buffalo.The characters of the murrah are:


● Body is strong built, heavy and wedge shaped.


● Head is comparatively small with long face.


● Neck is long and body colour is jet –black.


● Murrah has ability to adopt in any kind of climate in India.


● Daily milk production is about 8-16 liters.


● It is more disease resistant as compared to hybrid cows.




Question 3.

Explain the process of hatching eggs under broody hen in rural areas?


Answer:

● Local chicken breeders rear eggs using incubators.


● Incubator is a device used to maintain required temperature.


● Chicken breeders produce chicken in large scale using incubator.


● But hatching of eggs in traditionally in rural area an interesting job.


● Our rural practioners hatch eggs by placing eggs under the hen.


● Hatchability of eggs is generally influenced by 37 to 38C temperature.


● In about 21 days chicks come out of the egg.




Question 4.

Write about the accessory products produced in animal husbandry.


Answer:

The accessory products animal husbandry are:


● Bones of dead animals which are used making fertilisers.


● Leather which is used in the leather industry. Bones are used in fertilizer industries.


● Meat processing from animals is another side of animal wealth.


● Beef is from bulls and buffaloes, pork is from pigs, mutton is from sheep and goats are prominent meat varieties.


● Cow/buffalo dung is used as compost or used to produce bio gas.



Question 5.

What is estuaries, how they are suitable for both marine and river fish to live?


Answer:

● Estuaries are the place where seawater and fresh water mix together.


● It is resource of brackish water.


● Both local and imported fish species are used in such systems.


● In such a system, a combination of five or six fish species are used in a single fishpond.


● The species are selected I such as way that they do not compete for food and space among themselves.


● They have different types of food habits so that the all the food available in the different parts of the pond is used.


● For example, Catlas are surface feeders. Rohus feed in the middle zone of the pond. Mrigals and common carps are bottom feeders.



Question 6.

If you have a chance to visit milk chilling center, what doubts would you like to clarify? Please list out them.


Answer:

● How the collection of the milk is done?


● Whether the all the milk mix together or kept separately.


● What is pasteurization?


● How Pasteurization is done?


● What are the products made in milk chilling center?


● Why the milk packets are cool enough?


● How rate of milk is fixed for dairy framers?



Question 7.

Collect news from newspapers about milk production and impurities in milk. Prepare a note and display it on wall magazine.


Answer:

i. Milk Production is main product of dairy Farm. With the advancement of new technologies, new breeds of milch (milk giving) animals such as cows and buffalos India is one of the largest producer of milk in the world.


ii. After operation flood, economic condition of milk producers have gone up. With the help of government and support form dairy department this industry is blooming year by year and people are taking it is as serious profitable business.


iii. To get more profit, some people adulterate milk by adding harmful things in the mil. These substance or things affect the quality of milk. The main impurities in the milk are:


● Water in milk, one of basic impurity.


● Adding urea in milk: Increase the whiteness in milk.


● Synthetic milk: almost a kind of fake milk. Dangerous to health.


● Starch is added in milk.



Question 8.

Collect information about sea weeds, sea kelp from your school library and write a note with examples.


Answer:

i. Sea kelp is seaweed or brown algae. Kelp form large forests beneath the shallow waters of the ocean. Sea weeds are the marine resources.


ii. Seaweed doesn’t have xylem and phloem (vascular tissue) like other plants, but all parts of the kelp absorb the nutrients and gases that it needs to grow from the water in which it is grown.


iii. Kelp is harvested for food such as soups and other dishes. Kelp is also used in the production of soaps and glass.


iv. A kelp-derived product is also used as a thickener in ice cream, jelly, toothpaste, breads, beer, pudding, salad dressing and other items.




Question 9.

Observe nearby poultry form and find out how do they export eggs to market? What material is used for transportation?


Answer:

● The most important component in the poultry farms is to collect and handling the eggs.


● Utmost care is to be taken at the time of collection and transportation of eggs.


● Special design are planned in the poultry farms to avoid breakage of eggs.


● For export eggs are packed in egg trays made from recycled paper and molded pulp by means of a mechanized process.


● These trays protects the eggs from vertical and horizontal friction and avoid breakage during transportation.




Question 10.

Observe a dry honey bee hive and how the bees built it. Draw a picture. How does it look like?


Answer:

Honey beehive looks like mosquito net that is fixed in the windows and door to prevent entry of mosquitoes.