126: Out of all the Biosphere Reserves in India, four have recognized on the World Network by UNESCO. Which one of the following is not one of them?
(a) Kanchejunga
(b) Gulf of Mannar
(c) Nanda Devi
(d) Sunderbans
127: Which of the following fish are bred exclusively in the cold regions of India ?
I. Catla.
II. Tinca.
III. Bhekti.
IV. Trout.
Choose the correct answer from the codes given below.
Codes:
(a) I and lV
(b) I and IV
(c) II and IV
(d) III and IV
128: Which one of the following statements is not correct ?
(a) All echinoderms are viviparous
(b) Round worm has no circulatory system
(c) In bony fishes, swim bladder is usually present
(d) In cartilaginous fishes, fertilisation is internal
129: Aluminium surfaces are often anodized. This means the deposition of a layer of
(a) chromium oxide
(b) aluminium oxide
(c) nickel oxide
(d) zinc oxide
130: Consider the following statements:
A digital signature is
1. an electronic record that identifies the certifying authority issuing it
2. used to serve as a proof of identity of an individual to access information or server on Internet
3. an electronic method of signing an electronic document and ensuring that the original content is unchanged
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3