MCQ
Plant tissues can be separated into single cells by using:
- ACellulase and pectinase
- BCellulase and auxins
- CCellulase and peg
- DAuxins and cytokinins
Explanation:
Plant cells are surrounded with a cellulosic cell wall. Between adjacent plant cells is present middle lamella. The middle lamella is made up of calcium and pectin. Hence, plant cells of a tissue are separated from each other with the help of cellulase and pectinase enzymes. These enzymes are commercially used in clearing of fruit juices to dissolve plant fibres.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Assertion $(A):$
Polymerase chain reaction is used in DNA amplification
Reason $(R):$
The ampicillin resistant gene is used as a selectable marker to check transformation
In the light of the above statements, choose the correct answer from the options given below :
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 $\mathrm{pH}$ of the insect gut.
In the light of the above statements, choose the correct answer from the options given below: