ZOO510 Midterm Solved Paper

MUHAMMAD IMRAN · ZOO510-Economic-Zoology · MID TERM SOLVED PAST PAPER · 1. Economic zoology

Economic Zoology is a sort of applied zoology, which involves the study of animals / living organisms that are of benefit or those that cause harm to humans.

1. Tip's for the safety of bee keepers

Bees can be dangerous; a beekeeper must take several safety precautions when working around a honey bee colony. ✓ A hat or veil is commonly used to keep the face and neck protected from stings. ✓ Gloves are another popular form of beekeeping protection, although many beekeepers complain that gloves restrict their movement. ✓ A hooded suit, typically made from a light colored fabric to help distinguish the beekeeper from the honey bee’s natural predators, may also be used. While working with a honey bee colony, a beekeeper uses a smoker to help calm the bees ✓ Smoke is useful in beekeeping because it masks the guard bee’s alarm pheromones and encourages the other bees to feed by tricking them into thinking they’ll soon need to abandon their hive. ✓ The smoke gives the beekeeper enough time to inspect the colony and perform any needed maintenance. ✓ I use Pine needles for fuel in my bee smoker.

2. Type of fish Feeds

✓ Finely ground meals ✓ Crumbles ✓ Flakes ✓ Pellets of various size & density

• Sinking
• Floating
• Slow sinking

✓ Microdiet

3. Define fungus?2

Fungus are multi-cellular, spore producing organisms that live off other organisms, and dead matter, some are parasitic. Fungal spores are commonly found in aquarium water

4. Define pullet? 2 “Young, immature female chicken less than 5-6 months of

age”

5. Bombyx mori Characteristics

✓ It cannot fly ✓ Caterpillars with no real locomotion ✓ Female larger than male ✓ Male has big plumose antennae

6. Commonly cultured fish name? 5.

7. Technique of lac culture? 3

Lac is a natural resin of animal origin. It is secreted by an insect, known as lac-insect in order to obtain lac, these insects are cultured and the technique is called lac-culture.

8. Protein requirements for fish? 3

✓ Fish contain 60-93% crude protein, thus, fish diets are higher in protein than birds & animals. ✓ Fish appear to be relatively efficient utilizer of protein to energy with 84%. ✓ Fish can not synthesize their amino acids & obtain chiefly from the diet & absence affects growth of fish

9.

Composition of lac.

Lac is a mixture of several substances, of which resin is the main constituent. The approximate

percentage of different constituents of lac is given below:

✓ Resin – 68 to 90% ✓ Dye – 2 to 10% ✓ Wax – 5 to 6% ✓ Mineral matter – 3 to 7% ✓ Albuminous matter – 5 to 10% ✓ Water – 2 to 3%

10. Spring viremia crops.

Cause

✓ A viral infection caused by Rhabdovirus carpio. Symptoms

✓ Darkening of skin, pale gills, pop eye, protruding vent, bleeding in gills skin and eyes. ✓ Lethargy, abnormal swimming positions, sitting on bottom of the tank.

Treatment ✓ No known treatment .

11. Guard bees and soldier bees.

Guard Bees - protect the entrance of the hive from enemies.

Soldier bees - Soldiers hang around near the entrance and attack invaders. They work in concert with entrance guards.

12. Plumage.

Plumage: Feathers of a bird.

Q13. What is virus?

A virus is a microscopic organism that can only reproduce by inhabiting host cells and using the genetic material in the cells of a host. 14.

What is hatchery?

The eggs are incubated at the hatchery. They are kept warm, until the chicks start to hatch out of their shells. Chickens hatch at around 20 days and turkeys hatch at around 27 days. Baby chickens are called chicks. Baby turkeys are called poults. 15. Oligotrophic & eutrophic.

Oligotrophic

✓ Excellent water quality ✓ Very Clear ✓ Used in display aquaria ✓ Most frequently used for breeding purposes ✓ Some species are kept in these conditions all of their lives, while others for a period of time

Eutrophic

Exist for the grow out of the most tolerant species that show vigorous growth under moderately deteriorated water quality conditions ✓ Dissolved oxygen levelseconomic optimum level ✓ Ammonia & Nitrite – less than 2mg-N/L ✓ Water quality – marginal

Species evolved under similar natural conditions prosper in these conditions 16. What is difference between intensive and extensive aquaculture.

Extensive Aquaculture: Minimal control, lower density • E.g., ponds, prevalent

in third world countries

Intensive Aquaculture: Highly controlled, high density, RAS, raceways, confined

• E.g. industrialized .

17.

What is fish health.

➢ Health or well being important for ➢ feeding ➢ Growth ➢ Reproduction ➢ Diseased fish results in poor growth and ends up in losses

• Further when diseased fish is sent to consumer, it changes
• Texture
• Appearance
• Taste

18. Abdominal capacity of a hen is measured and expressed

Abdominal capacity of a hen is measured and expressed by ones fingers width.

Normal3 fingers width by 4 fingers width

19. Stages of insects The Life cycle of lac insect takes about six months and consists of stages:

1. EGG
2. NYMPH
3. INSTARS
4. PUPA