Understanding Rice Cultivation: From Seed to Harvest

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What is the main function of the endosperm in a rice seed?

To protect the embryo from external damage

To store nutrients necessary for growth (correct)

To regulate seed germination

To develop into roots and leaves

What is the purpose of seed disinfection in rice cultivation?

To enhance seed germination

To prevent the spread of diseases and ensure healthy plant growth (correct)

To increase seed yield

To reduce the cost of seed production

What is the primary role of the embryo in a rice seed?

To store nutrients for growth

To regulate seed germination

To develop into roots and leaves (correct)

To protect the seed from external damage

What is the causal agent of white tip disease of rice?

Rice white-tip nematode Signup and view all the answers

In which state can the rice white-tip nematode survive for several years on stored grain?

Anhydrobiosis Signup and view all the answers

What is the common disinfectant used for rice in Japan?

Potassium permanganate Signup and view all the answers

What is the primary response of an organism to extreme desiccation in anhydrobiosis?

Entering a state of suspended animation or dormancy Signup and view all the answers

How do rice seeds typically become infected with Bakanae disease?

As a result of fungal spores on the seed surface Signup and view all the answers

What is the primary characteristic of severely infected grain in Bakanae disease?

Discoloration Signup and view all the answers

What is the primary cause of rice bacterial grain rot?

Bacterial pathogens Signup and view all the answers

What is the typical appearance of symptoms in rice blight?

Water-soaked lesions with angular shapes Signup and view all the answers

What is the consequence of severe rice blight infection?

Premature withering and death of infected leaves Signup and view all the answers

What is the primary purpose of seed soaking?

To accelerate the initial stages of plant growth Signup and view all the answers

What is the recommended temperature range for soaking rice seeds?

10 to 15°C Signup and view all the answers

What is an indication of the soaking process?

100°C as accumulated temperature Signup and view all the answers

Understanding Rice Cultivation: From Seed to Harvest

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Questions and Answers

What is the main function of the endosperm in a rice seed?

What is the purpose of seed disinfection in rice cultivation?

What is the primary role of the embryo in a rice seed?

What is the causal agent of white tip disease of rice?

In which state can the rice white-tip nematode survive for several years on stored grain?

What is the common disinfectant used for rice in Japan?

What is the primary response of an organism to extreme desiccation in anhydrobiosis?

How do rice seeds typically become infected with Bakanae disease?

What is the primary characteristic of severely infected grain in Bakanae disease?

What is the primary cause of rice bacterial grain rot?

What is the typical appearance of symptoms in rice blight?

What is the consequence of severe rice blight infection?

What is the primary purpose of seed soaking?

What is the recommended temperature range for soaking rice seeds?

What is an indication of the soaking process?

What is a benefit of seed soaking for seeds with hard or impermeable seed coats?

What is a result of seed soaking on metabolic processes within the seed?

What is a benefit of seed soaking in terms of germination rate?

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