HSST – Botany

1. The rice variety PTB—10 was raised by
(A) Pure line method                 (B) Clonal selection
(C) Mass selection                      (D) Hybridisation

2. Foolish seedling disease is caused by
(A) Pythium                              (B) Phytophthora
(C) Cereospora                         (D) Fusarium

3. One nanometer is equal to
(A) 1W4 mm                            (B) 10 mm
(C) 100A                                   (D) 1A

4. The linkage between two glucose molecules in cellobiose is
(A) aL-4bond                            (B) a 1—6 bond
• (C) /3 1—4 linkage                 (D) /3 1—6 linkage

5. The credit for developing wheat rhye goes to
(A) Muller                                (B) Prof. MS. Swaminathan
(C) Prof. Muntzing                  (D) Dr. Norman Borlong

6. Cholera is a disease caused by
(A) Virus                                  (B) Protozoa
(C) Bacteria                             (D) Fungus

7. Steroids have the same core structure
(A) One 5 carbon ring and 2 six carbon rings
(B) One 5 carbon ring and 3 six carbon rings
(C) Two 5 carbon rings and 2 six carbon rings
(D) Three 5 carbon rings and 1 six carbon ring

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