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Chapters
1: Reproduction in Organisms
2: Sexual Reproduction in Flowering Plants
3: Human Reproduction
4: Reproductive Health-Problems and Strategies
Unit 2 – Genetics and Evolution
5: Principles of Inheritance and Variation
6: Chromosomes, Sex-Linked Inheritance and Human Genetic Disorders
7: Molecular Basis of Inheritance
8: Evolution-Origin of Life
9: Theory of Evolution and Evolution of Man
Unit 3 – Biology and Human Welfare
10: Human Health and Diseases
11: Adolescent Issues: Alcoholism and Drugs
▶ 12: Animal Breeding for Improvement in Food Production
13: Plant Breeding to Enhance Food Production
14: Microbes in Human Welfare
Unit 4 – Biotechnology
15: Biotechnology: Principles and Processes
16: Biotechnology and Its Applications
Unit 5 – Ecology and Environment
Chapter 17: Organisms and Populations
Chapter 18: Ecosystem
Chapter 19: Biodiversity and Conservation
Chapter 20: Environmental Issues
![Sarita Aggarwal solutions for Biology [English] Class 12 ISC chapter 12 - Animal Breeding for Improvement in Food Production - Shaalaa.com](/images/biology-english-class-12-isc_6:65d11b7ee3eb4277bbdac77874c6c42a.jpg "Sarita Aggarwal solutions for Biology [English] Class 12 ISC chapter 12 - Animal Breeding for Improvement in Food Production")
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Solutions for Chapter 12: Animal Breeding for Improvement in Food Production
Below listed, you can find solutions for Chapter 12 of CISCE Sarita Aggarwal for Biology [English] Class 12 ISC.
Sarita Aggarwal solutions for Biology [English] Class 12 ISC 12 Animal Breeding for Improvement in Food Production EXERCISES [Pages 675 - 682]
Choose the correct answer: I. Multiple choice questions Choose the correct answer:
Which of the following breeds of cows are strong and sturdy but yield less milk?
draught breeds
dairy breeds
dual-purpose breeds
exotic breeds
Holstein-Friesian is a ______.
cross-breed
indigenous breed
exotic breed
dual-purpose breed
Which of the following is an important cross-breed of cow?
Sahiwal
Karan Fries
Gir
Mehasana
What is true of the concentrates given in animal feed, they are ______.
high in fibres and high in protein
high in fibres and low in protein
low in fibres and high in protein
low in fibres and high in antibiotics
Which one of the following is a bacterial disease?
foot and mouth
anthrax
cowpox
amoebiasis
The workers of honey bee ______.
lay unfertilised eggs
lay fertilised eggs
do not lay any eggs
are male members of colony
Which of the following is an exotic breed of fowls?
Aseel
Yakub
Kajal
White Leghorn
The poultry birds that are grown for meat are called ______.
growers
broilers
layers
commercial layers
Levels of following vitamins are kept high in broilers:
Vitamin A and B
Vitamin A and C
Vitamin A and K
Vitamin B and K
The exotic edible variety of freshwater fish is ______.
catla
grass carp
rohu
mrigal
A well known infectious disease of fish is ______.
rinderpest
anthrax
black quarter
VHS
The following technique increases homozygosity and reduces fertility.
Out-crossing
Inbreeding
Cross-breeding
Artificial insemination
Fill in the blanks
Jersey is an ______ breed of cow.
Karan Fries is a cross breed between ______ and ______.
A cross breed between Brown Swiss and Sahiwal is ______.
Murrah is an original breed of buffalo from ______ and ______.
Milk yield of Surti breed is ______ to ______ litres.
Additives in animal feed contain ______, ______ and ______.
Aseel breed gives high yield of ______ but poor yield of ______.
The levels of vitamins ______ and ______ are kept high in poultry feed.
______ is the fastest growing carp.
______ and ______ are highly infectious diseases of the fish.
State whether the following is true or false.
Milk of buffaloes contains more fat than cow's milk.
State whether the following is true or false.
Jersey is an Indian breed of cow.
State whether the following is true or false.
Mehsana is a breed of buffalow.
State whether the following is true or false.
Mule is produced by inbreeding technique.
State whether the following is true or false.
Karan Swiss is produced by crossbreeding Jersey and Red Sindhi.
State whether the following is true or false.
Rhode Island Red is a good egg layer and also meat yielding.
State whether the following is true or false.
Indigenous breeds of cows give a very high yield of milk.
State whether the following is true or false.
Inbreeding refers to mating of closely related animals of the same breed.
State whether the following is true or false.
Out-crossing technique of breeding gives rise to interspecific hybrid.
State whether the following is true or false.
Frozen embryos are used in artificial insemination.
Match the following.
| Column A | Column B |
|---|---|
| 1. MOET | (a) Mating of crossly related animals of same breed |
| 2. Exotic breeds | (b) Super ovulation |
| 3. Inbreeding | (c) Mating of male and female animals from two different species or breeds |
| 4. Hybrid | (d) Breeds from foreign countries |
| 5. Artificial insemination | (e) Number of cows can be impregnated by frozen semen. |
Answer the following in one or two words.
A dual purpose breed.
Answer the following in one or two words.
A cross-breed between Holstein-Friesian and Sahiwal.
Answer the following in one or two words.
Process of impregnation of number of cows (upto 3000) by the semen collected from one bull.
Answer the following in one or two words.
Poultry that is reared for obtaining meat.
Answer the following in one or two words.
Process of rearing of fishes.
Answer the following in one or two words.
The fastest growing carp in freshwaters.
Answer the following in one or two words.
Dairy development programme that increased the production ofmilk in India.
Answer the following in one or two words.
Animal feed that is high in fibres and low in proteins.
Answer the following in one or two words.
Period of milk production between birth of a young one and the next pregnancy in cows.
Answer the following in one or two words.
Exotic variety of honeybee.
In the questions given below, there are two statements marked as Assertion (A) and Reason (R). Read the statements and choose the correct option.
Assertion (A): Cattle breeds can be improved by superovulation and embryo transplantation at 8-32 cell stage into a surrogate mother.
Reason (R): Superovulation in high milk-yielding cows is induced by injecting with hormones.
Both assertion (A) and reason (R) are true, and reason is the correct explanation of assertion.
Both assertion (A) and reason (R) are true, but reason is not the correct explanation of assertion.
Assertion (A) is true but reason (R) is false.
Both assertion (A) and reason (R) are false.
Assertion (A): In multiple ovulation embryos transfer—MOЕТ technology, hormones with progesterone like activity are given to the cow to induce superovulation.
Reason (R): After mating, the embryos at 4-6 celled stage are recovered and transferred to surrogate mothers.
Both assertion (A) and reason (R) are true, and reason is the correct explanation of assertion.
Both assertion (A) and reason (R) are true, but reason is not the correct explanation of assertion.
Assertion (A) is true but reason (R) is false.
Both assertion (A) and reason (R) are false.
Assertion (A): Drones are haploid members of honey bee that develop from unfertilised egg.
Reason (R): They are referred as male members of the colony.
Both assertion (A) and reason (R) are true, and reason is the correct explanation of assertion.
Both assertion (A) and reason (R) are true, but reason is not the correct explanation of assertion.
Assertion (A) is true but reason (R) is false.
Both assertion (A) and reason (R) are false.
Assertion (A): Out crossing practice involves mating of animals with no common ancestor on either side for 4-5 generations.
Reason (R): A single outcross often helps to overcome inbreeding depression.
Both assertion (A) and reason (R) are true, and reason is the correct explanation of assertion.
Both assertion (A) and reason (R) are true, but reason is not the correct explanation of assertion.
Assertion (A) is true but reason (R) is false.
Both assertion (A) and reason (R) are false.
Assertion (A): A good apiary should have abundance of flora within 1-2 km radius.
Reason (R): Honey bees help in cross-pollination of flowers.
Both assertion (A) and reason (R) are true, and reason is the correct explanation of assertion.
Both assertion (A) and reason (R) are true, but reason is not the correct explanation of assertion.
Assertion (A) is true but reason (R) is false.
Both assertion (A) and reason (R) are false.
Read the sources given and answer any four from the questions given below:
|
Honeybees are social insects and provide large amounts of honey. Apiary or beekeeping is maintenance of beehives for the production of honey. A colony of honeybees is a highly complex cluster of individuals. It usually consists of a queen bee-a diploid, fertilised female capable of laying thousands of eggs per day, number of sterile diploid females-the worker bees, and some haploid male bees called drones. Bees secrete beeswax in tiny flakes by the glands present on the underside of the abdomen and mould it into honeycomb, thin-walled, back-to-back, six-sided cells. The use of the cell varies depending on the needs of the colony. Honey or pollens may be stored in some cells, while the queen lays eggs, normally one per cell. The area where the bees develop from the eggs is called the brood nest. Generally, honey is stored toward the top of the combs and pollen in the cells around the brood nest below the honey. The bees maintain a uniform temperature of about 93°F (34°C) in the brood nest regardless of the outside temperature. |
- A beehive contains a group of honeybees consisting of
- queen bee and workers
- workers and drones
- queen bee and drones
- queen bee, workers and drones
- Which of the following individuals is haploid in honeybee?
- queen bee
- workers
- drones
- both workers and drones
- Area where the bees undergo development from the eggs is called
- brood nest
- bees chamber
- queen nest
- honeycomb
- Where is honey stored in a honeycomb?
- in all cells of honeycomb
- towards the top cells of honey comb
- below the brood nest
- along with pollen grains in honeycomb cells
- Which of the following statements is not correct about honeycomb?
- generally there is one queen bee in a hive
- workers are sterile females
- beeswax is secreted by glands present on underside of bees abdomen
- temperature of brood nest changes with the outside temperature
B. SUBJECTIVE QUESTIONS I. Very short answer type questions (1 mark)
What is the term used for the practice of dealing with management of breeding and raising of domestic animals?
Name 3 main indigenous breeds of cows.
Name 3 cross breeds.
What are the main components of animal feed?
What are concentrates that form part of animal feed?
Name a common disease in cattle in which lesions appear and there is excessive salivation and difficulty in swallowing.
Name 2 exotic breeds of foul.
What is the meaning of laying period in poultry?
What technology is used to accumulate superior genes from same breed?
What is cross-breeding?
What is ‘Hybrid’?
What is the process called whereby semen of superior quality males (bulls) is injected into reproductive tract of selected females?
What are the advantages of artificial insemination?
What is full form of MOET?
Which type of hormone is used in MOET technology?
Give the scientific name of the most common species of honeybee reared in India.
What is the percentage of sugar in honey?
What is the role of workers in honey bee?
Which types of individuals are formed from diploid fertilised eggs in honey bee?
Which factors contribute to the quality and taste of honey?
Name 2 exotic varieties of fishes.
Name 2 marine fishes.
Name 2 diseases that can lead to death of fishes.
What is 'Inland fisheries'?
Name two edible freshwater fishes.
Short answer type questions (2 marks)
Name four milk-producing animals of India.
Name three major categories of cow breeds.
Why do farmers sometimes prefer dual purpose breeds than other breeds?
Name three indigenous breeds of dairy cows.
Name three indigenous breeds of buffaloes.
Name the exotic breeds of cows used for cross-breeding in India.
How are cross-breeds different from indigenous breeds?
Name three successful cross-breeds of cows.
What are the main components of an animal feed (cow or buffalo)?
What should be the amount of various components in the 'ration' of a cow?
Name four infectious diseases of cattle.
What can be done to prevent and control the infectious diseases?
Mention the advantages of artificial insemination.
Name two exotic poultry breeds.
Why are the nutritional requirements of broilers different?
What do you understand by fish farming?
Name two freshwater fish.
Name two important diseases of fish.
What is Animal husbandry?
Define the following.
Pisciculture
Define the following.
Apiculture
Define artificial insemination.
Define the term multiple ovulation embryo transfer techniques.
Give one advantage of artificial insemination.
Give one significance of multiple ovulation embryo transfer techniques.
What is the meaning of the term inbreeding?
What is outbreeding?
Give one significance of inbreeding.
Give one significance of out breeding.
Differentiate between the following:
Draught and Dairy breeds
Differentiate the following.
Exotic breed and Indigenous breed
Differentiate between the following:
Sahilwal and Brown Swiss
Differentiate between the following:
Roughage and Concentrates
What are the differences between broilers and layers and in their management?
Differentiate between the following:
Indigenous and Cross-breeds
Differentiate between outbreeding and inbreeding.
What are the important categories of cows? Give significant features of each one of them.
Explain the main varieties of indigenous cows.
How are cross-breeds of cows obtained?
Name the successful cross-breeds.
Name and explain some important breeds of buffaloes.
What type of food requirement is necessary for milk producing cattle?
Which are the common diseases of dairy animals? What preventive measures can be taken to control them?
What is artificial insemination?
What are the advantages of artificial insemination?
What is poultry farming?
What kind of poultry care is required for better yield?
What is fish farming?
How can the fish production be increased?
What are the causes of death of fishes?
What is the significance of goat and sheep rearing?
Name the indigenous and exotic breeds of goat and sheep.
Which common diseases infect goat and sheep? How can these be prevented?
E. BOARD QUESTIONS 1 mark
What is cryopreservation?
Give a reason for the following:
Cattle avoid browsing on Calotropis plant.
2 marks
What is outbreeding?
How is outbreeding useful in animal breeding?
Enumerate any four essential features of good and effective poultry farm management practices.
Solutions for 12: Animal Breeding for Improvement in Food Production
Sarita Aggarwal solutions for Biology [English] Class 12 ISC chapter 12 - Animal Breeding for Improvement in Food Production
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