MCQ
Leaves become modified into spines in
- Aonion
- Bsilk cotton
- ✓Opuntia
- Dpea.
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$A$. Microtubules - Structural components of cilia
$B$. Centrioles - Store hydrolytic enzymes
$C$. Amyloplasts - Store oil protein and starch in plants
| List $- I$ | List $- II$ |
| $(a)$ $S$ phase | $(i)$ Proteins are synthesized |
| $(b)$ $G_2$ phase | $(ii)$ Inactive phase |
| $(c)$ Quiescent stage | $(iii)$ Interval between mitosis and initiation of $DNA$ replication |
| $(d)$ $\mathrm{G}_{1}$ phase | $(iv)$ $DNA$ replication |
Choose the correct answer from the options given below.
$(a) -(b) -(c)- (d)$
$R$ : It is native configuration of protein molecules maintained by multiple covalent bonds only.
| Column$-I$ | Column$-II$ |
| $(a)$ Pituitary gland | $(i)$ Grave's disease |
| $(b)$ Thyroid gland | $(ii)$ Diabetes mellitus |
| $(c)$ Adrenal gland | $(iii)$ Diabetes insipidus |
| $Z(d)$ Pancreas | $(iv)$ Addision's disease |
$(a)\quad(b)\quad(c)\quad(d)$
