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Chapters
2: Motion
3: Fluids
4: Electric charge and Electric current
5: Magnetism and Electromagnetism
6: Light
7: Heat
8: Sound
9: Universe
10: Matter Around Us
11: Atomic Structure
12: Periodic Classification of Elements
13: Chemical Bonding
14: Acids, Bases and Salts
15: Carbon and its Compounds
16: Applied Chemistry
17: Animal Kingdom
18: Organisation of Tissues
19: Plant Physiology
20: Organ Systems in Animals
21: Nutrition and Health
22: World of Microbes
▶ 23: Economic Biology
24: Environmental Science
25: Computer – LibreOffice Impress
![Samacheer Kalvi solutions for Science [English] Class 9 TN Board chapter 23 - Economic Biology - Shaalaa.com](/images/science-english-class-9-tn-board_6:5f2b1b2038084cf381bfa42c826a928c.jpg "Samacheer Kalvi solutions for Science [English] Class 9 TN Board chapter 23 - Economic Biology")
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Solutions for Chapter 23: Economic Biology
Below listed, you can find solutions for Chapter 23 of Tamil Nadu Board of Secondary Education Samacheer Kalvi for Science [English] Class 9 TN Board.
Samacheer Kalvi solutions for Science [English] Class 9 TN Board 23 Economic Biology Exercise [Pages 287 - 288]
Which one of the following is not an exotic breed of cow?
Jersey
Holstein-Friesan
Sahiwal
Brown Swiss
Which one of the following is an Italian species of honey bee?
Apis mellifera
Apis dorsata
Apis florae
Apis cerana
Which one of the following is not an Indian major carp?
Rohu
Catla
Mrigal
Singhara
Drones in the honey bee colony are formed from ______.
unfertilized egg
fertilized egg
parthenogenesis
both b and c
Which Indian variety of honey bee is commonly used for apiculture?
Apis dorsata
Apis florea
Apis mellifera
Apis indica
______ is the method of growing plants without soil.
Horticulture
Hydroponics
Pomology
None of these.
The symbiotic association of fungi and vascular plants is ______.
Lichen
Rhizobium
Mycorhizae
Azotobacter
Choose the correct answer.
The production and management of fish is called ______.
Pisciculture
Sericulture
Aquaculture
Monoculture
The plant body of mushroom is ______.
Spawn
Mycelium
Leaf
All of these
Which of the following is an high milk yielding variety of cow?
Holstein- Friesan
Dorset
Sahiwal
Red Sindhi
Fill in the blanks.
Quinine drug is obtained from ______.
Carica papaya leaf can cure ______ disease.
Vermicompost is a type of soil made by ______ and microorganisms.
______ refers to the culture of prawns, pearl and edible oysters.
The largest member in a honey bee hive is is the ______.
______ is a preservative in honey.
______ is the method of culturing different variety of fish in a water body.
Say true or false. If false, correct the statement.
Mycorrhiza is an algae.
True
False
Say true or false. If false, correct the statement.
Milch animals are used in agriculture and transport.
True
False
Say true or false. If false, correct the statement.
Apis florea is a rock bee.
True
False
Say true or false. If false, correct the statement.
Ongole is an exotic breed of cattle.
True
False
Say true or false. If false, correct the statement.
Sheep manure contains high nutrients than farm yard manure.
True
False
Differentiate the following.
Exotic breed and Indigenous breed
Differentiate the following.
Pollen and Nectar
Differentiate the following.
Shrimp and Prawn
Differentiate the following.
Farmyard manure and Sheep manure
Match the following.
| Column A | Column B |
| Lobsters | Marine fish |
| Catla | Pearl |
| Sea bass | Shell fish |
| Oysters | Paddy |
| Pokkali | Fin fish |
| Pleurotus sps | Psoriosis |
| Sarpagandha | Oyster mushroom |
| Olericulture | Reserpine |
| Wrighta tinctoria | Vegetable farming |
Answer briefly.
What are secondary metabolites?
What are the types of vegetable garden?
Mention any two mushroom preservation methods.
Enumerate the advantages of vermicompost over chemical fertiliser.
What are the species of earthworm used for vermiculture?
List the medicinal importance of honey.
Answer in detail.
Enumerate the advantage of hydroponics.
Define Mushroom culture. Explain the mushroom cultivation methods.
What are the sources of organic resources for vermicomposting?
Give an account of different types of fish ponds used for rearing fishes.
Classify the different breeds of the cattle with suitable examples.
Higher Order Thinking Skill.
Biomanuring plays an important role in agriculture. Justify
Higher Order Thinking Skill.
Each bee hive consists of hexagonal cells. Name the material in which the cell is formed and mention the significance of the hexagonal cells.
Solutions for 23: Economic Biology
Samacheer Kalvi solutions for Science [English] Class 9 TN Board chapter 23 - Economic Biology
Shaalaa.com has the Tamil Nadu Board of Secondary Education Mathematics Science [English] Class 9 TN Board Tamil Nadu Board of Secondary Education solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. Samacheer Kalvi solutions for Mathematics Science [English] Class 9 TN Board Tamil Nadu Board of Secondary Education 23 (Economic Biology) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.
Further, we at Shaalaa.com provide such solutions so students can prepare for written exams. Samacheer Kalvi textbook solutions can be a core help for self-study and provide excellent self-help guidance for students.
Concepts covered in Science [English] Class 9 TN Board chapter 23 Economic Biology are Horticulture, Manuring (Biomanuring), Biofertilizers, Medicinal Plant, Mushroom Cultivation, Hydroponics, Aquaponics, Dairy Farming, Aeroponics, Aquaculture, Pisciculture (Fish Farming), Prawn Culture, Vermicomposting, Apiculture (Bee Farming).
Using Samacheer Kalvi Science [English] Class 9 TN Board solutions Economic Biology exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in Samacheer Kalvi Solutions are essential questions that can be asked in the final exam. Maximum Tamil Nadu Board of Secondary Education Science [English] Class 9 TN Board students prefer Samacheer Kalvi Textbook Solutions to score more in exams.
Get the free view of Chapter 23, Economic Biology Science [English] Class 9 TN Board additional questions for Mathematics Science [English] Class 9 TN Board Tamil Nadu Board of Secondary Education, and you can use Shaalaa.com to keep it handy for your exam preparation.
