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Question 255

Question MCQ▾

Which of the statement/statements given below is/are incorrect about Domesticated Silkworm Cocoons? (November)

(i) Silk, the queen of fibres is obtained or reeled from cocoons of the silk moth (Bombay mori) .

(ii) The non-genetic factors have been revealed by the researchers behind the cocoon colours and adaptations of silk-producing insects including the way they have transformed the silk industry.

(iii) Bombyx mori was derived from the wild silk moth (Bombyx mandarina) in China more than 5,000 years ago.

(iv) In regions like China, Korea, Japan, and far-eastern Russia, the ancestral moth still roams.

Choices

Choice (4)Response

a.

(ii) only

b.

(i) , (ii) and (iii) only

c.

(i) only

d.

(iv) only

Edit

Question 256

Question MCQ▾

Consider the following statements about Deep Ocean Mining:

(i) India would embark on a journey to a depth of 6,000 metres in the ocean using an indigenously developed submersible with a three-member crew.

(ii) This mission would also require technologies for accessing and transporting tonnes of valuable minerals in an environmentally safe manner from the ocean bed.

(iii) This mission is implemented by the MoES and was approved by the Union Cabinet in 2018.

(iv) For deep-sea mining and a manned submersible, technology development for carrying three people to a depth of 6,000 metres in the ocean. This submersible would be equipped with a suite of scientific sensors, tools, and an integrated system for polymetallic nodules mining from the central Indian Ocean.

Which of the statement/statements given above is/are incorrect? (November)

Choices

Choice (4)Response

a.

(ii) , (iii) and (iv) only

b.

(iv) only

c.

(iii) only

d.

(i) and (ii) only

Edit