Tools Techniques - Questions & Answers | Exam2Win

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176. Large plant cells are

A. Xylem vessel cells

B. Parenchyma cells

C. Sieve tube cells

D. Sclerenchyma fibres

Explanation:

177. Dedifferentiated cells are formed in the region of

A. Injury

B. Regeneration

C. Secondary growth

D. All the above

Explanation:

178. Cell theory was put forward by

A. Schleiden and Schwann

B. Sutton and Boveri

C. Watson and Crick

D. Darwin and Wallace

Explanation:

179. As compared to light microscope, the resolving power of electron microscope is

A. 10 times

B. 50 times

C. 1000 times

D. 5000 times

Explanation:

180. Rapidly dividing unorganized mass of cells in tissue culture is

A. Callose

B. Callus

C. Embryoid

D. Plantlet

Explanation: