STD 12 - 9. biotechnology principlas and process — NEET STD 11 Science — Question

$\begin{array}{|l|l|} \hline Column\;-\;I & Column\;-\;II \\ \hline a.\;pinocytosis & 1.\;Animal\;cell \\ \hline b.\;Lysomes & 2.\;Cell\;wall \\ \hline c.\;ER & 3.\;Acidic\;pH \\ \hline d.\;Centriole & 4.\;Ribosomes \\ \hline  & 5.\;liquid\;food \\ \hline \end{array}$

$I$. It is a transgenic variety of rice

$II$. It contains a goods quality of $\beta$-carotene (provitamin-A)

$III$. $\beta$-carotene is a principal source of vitamin- $A$

$IV$. The grains of the rice are yellow in colour due to $\beta$-carotene. The rice is commonly called golden rice

Which of the statements given above are correct?

$(i)$. Membrane-bounded inclusion bodies are not found in prokaryotic cells.

$(ii)$. Ribosomes are the site of protein synthesis.

$(iii)$. Pili are the surface structure of the bacteria which may play a role in motility.

$(iv)$. The cell membrane of prokaryotes is structurally similar to the eukaryotes.

Choose the option with the correct statements.

$I.$ In liverworts sexual reproduction occurs by the fusion of antherozoids and egg, which are produced in anthridium and archegonium, respectively

$II$. Both male and female sex organs may be present on same thalli or different thalli

$III.$ Zygote give rise to sporophyte, which is differentiated into food, seta and capsule

$IV$. Some cells of capsule undergoes meiosis and give rise to haploid spores

Fill the blanks with respect to $A$ and $B$. choose the correct option

$(i)$ In chlorophyceae, the stored food material is starch and the major pigments are chlorophyll $-a$ and $d$.

$(ii)$ In phaeophyceae, laminarian is the stored food and major pigments are chlorophyll $-a$ and $b$.
$(iii)$ In rhodophyceae, floridean starch is the stored food and the major pigments are chlorophyll $-a, d$ and phycoerythrin