One Mark Questions Answers

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