This Page Score: 0/40
Given below are two statements:
Statement I: Bt toxins are insect group specific and coded by a gene cry IAc.
Statement II: Bt toxin exists as inactive protoxin in B. thuringiensis. However, after ingestion by the insect the inactive protoxin gets converted into active form due to acidic pH of the insect gut.
In the light of the above statements, choose the correct answer from the options given below:
Given below are two statements:
Statement I: Parenchyma is living but collenchyma is dead tissue.
Statement II: Gymnosperms lack xylem vessels but presence of xylem vessels is the characteristic of
angiosperms.
In the light of the above statements, choose the correct answer from the options given below:
List of endangered species was released by:
The DNA present in chloroplast is:
Which of the following are fused in somatic hybridization involving two varieties of plants?
Spraying sugarcane crop with which of the following plant growth regulators, increases the length of stem, thus, increasing the yield?
Match List I with List II:
| List-I | List-II | ||
|---|---|---|---|
| A. | Frederick Griffith | I. | Genetic code |
| B. | Francois Jacob & Jacque Monod | II. | Semi-conservative mode of DNA replication |
| C. | Har Gobind Khorana | III. | Transformation |
| D. | Meselson & Stahl | IV. | Lac operon |
This Page Score: 0/40