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Chapter: 9th Science : Biology : Economic Biology

One Mark Questions Answers

Science : Biology : Economic Biology : Book Back Important Questions, Answers, Solutions : I. Choose the correct answer, II. Fill in the blanks, III. State whether true or false. If false, correct the statement, IV. Match the following, V. Assertion and reason type questions

ECONOMIC BIOLOGY

TEXT BOOK EXERCISES

 

1. Choose the correct answer :

 

1. The production and management of fish is called

(a) Pisciculture

(b) Sericulture

(c) Aquaculture

(d) Monoculture

[Answer: (a) Pisciculture]

 

2. Which one of the following is not an exotic breed of cow?

(a) Jersey

(b) Holstein-Friesan

(c) Sahiwal

(d) Brown Swiss

[Answer: (c) Sahiwal]

 

3. Which one of the following is an Italian species of honey bee?

(a) Apis mellifera

(b) Apis dorsata

(c) Apis florae

(d) Apis cerana

[Answer: (a) Apis mellifera]

 

4. Which one of the following is not an Indian major carp?

(a) Rohu

(b) Catla

(c) Mrigal

(d) Singhara

[Answer: (d) Singhara]

 

5. Drones in the honey bee colony are formed from

(a) unfertilized egg

(b) fertilized egg

(c) parthenogenesis

(d) both b and c

[Answer: (a) unfertilized egg]

 

6. Which of the following is an high milk yielding variety of cow?

(a) Holstein-Friesan

(b) Dorset

(c) Sahiwal

(d) Red Sindhi

[Answer: (a) Holstein-Friesan]

 

7. Which Indian variety of honey bee is commonly used for apiculture?

(a) Apis dorsata

(b) Apis florea

(c) Apis mellifera

(d) Apis indica

[Answer: (d) Apis indica]

 

8. ――― is the method of growing plants without soil.

(a) Horticulture

(b) Hydroponics

(c) Pomology

(d) None of these

[Answer: (b) Hydroponics]

 

9. The symbiotic association of fungi and vascular plants is

(a) Lichen

(b) Rhizobium

(c) Mycorrhizae

(d) Azotobacter

[Answer: (c) Mycorrhizae]

 

10. The plant body of mushroom is

(a) Spawn

(b) Mycelium

(c) Leaf

(d) All of these

[Answer: (b) Mycelium]

 

II. Fill in the blanks :

 

1. Quinine drug is obtained from Cinchona (cinjona maram).

2. Carica papaya leaf can cure Dengue disease.

3. Vermicompost is a type of soil made by Earthworm and microorganisms.

4. Aquaculture refers to the culture of prawns, pearl and edible oysters.

5. The largest member in a honey bee hive is the Queen Bee.

6. Formic acid is a preservative in honey.

7. Polyculture is the method of culturing different variety of fish in a water body.

 

III. Say true or false. If false, correct the statement :

 

1. Mycorrhiza is an algae.

Answer: False.

Correct statement: Mycorrhiza is a fungi.

2. Milch animals are used in agriculture and transport.

Answer: False.

Correct statement: Milch animals are used in milk production.

3. Apis florea is a rock bee.

Answer: False.

Correct statement: Apis dorsata is a rock bee.

4. Ongole is an exotic breed of cattle.

Answer: False.

Correct statement: Ongole is an Indian breed of cattle.

5. Sheep manure contains high nutrients than farm yard manure.

Answer: True.

 

V. 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:

Lobsters - Shell fish

Catla - Fin fish

Sea bass - Marine fish

Oysters - Pearl

Pokkali - Paddy

Pleurotus sps - Oyster mushroom

Sarpagandha - Reserpine

Olericulture - Vegetable farming

Wrighta tinctoria - Psoriosis


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