The mating of unrelated individual animals within the same breed is called
Out breeding
In-breeding
Line breeding
Cross breeding
Correct answer is A
Out breeding is the mating of unrelated individual animals within the same breed.
Out breeding is the opposite of in-breeding. It produces offspring with greater vigour and productivity.
Which of the followings is not an advantage of Introduction?
It enhances greater productivity
It leads to the absence of pests and diseases
It may not perform maximally
Breeds may perform better in terms of quality and quantity
Correct answer is C
Disadvantages of introduction is that it may not perform maximally while others are advantages of introduction.
One of the followings is not a type of pond
Metallic pond
Earthen pond
Concrete pond
Plastic pond
Correct answer is A
It is a confined body of water where fishes are raised under controlled conditions. Fish can also be raised in plastics, fiber stars and wooden rafts.
There are three types of pond: Earthen pond, Concrete pond and Plastic pond.
In ponds, fish is usually caught with the following except
Pollution
Hook and line
Fish trap
Cast net
Correct answer is A
Pollution is the contamination of the environment by releasing harmful substance into it.
The following steps are necessary when establishing a fish pond except
Moisture
Site selection
General survey
Clearing and stumping of site
Correct answer is A
STEPS IN ESTABLISHING FISH POND
-Site selection: This involves the choice of best site based on necessary conditions like, a piece of land through which a perennial stream flows.
-General survey: Detailed survey of the chosen site should be carried out, especially by extension workers.
-Clearing and stumping of site: This involves removal of trash, cutting of trees and removal of stumps.
-Construction of dam: This is usually constructed across the stream. Clay soil should be used for dam construction because of its ability to hold water.
Moisture is not needed.