MCQ
Which is wrong about mitochondria?
- ASite of aerobic respiration
- BSupported by double unit membrane
- CInfolding of inner membrane forms cristae
- ✓Many circular $DNA$ and few ribosomes are found in matrix.
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$(i)$ These muscle fibres taper at both ends and do not show striations.
$(ii)$ The wall of internal organs such as the blood vessels, stomach and intestine contain this type of muscle tissue.
$(iii)$ They are 'involuntary' as their function cannot be directly controlled.
Bone Number
$(1)$ Skull $1. 24$
$(2)$ Vertebrae $2. 60$
$(3)$ Ribs $3. 22$
$(4)$ Sternum $4.1$
$(5) $ Pectoral girdles $ 5. 2$
$(6)$ Arms $6. 4$
$(7)$ Ear ossicles $7. 6$
$(8)$ Pelvic girdles $8. 33$
The correct pairing sequence is
| 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.
$(a) -(b) -(c)- (d)$
| List $I$ | List $II$ |
| $A$ The structures used for storing of food | $I$ Gizzard |
| $B$ Ring of $6-8$ blind tubules at junction of foregut and midgut. | $II$ Gastric Caeca |
| $C$ Ring of $100-150$ yellow coloured thin filaments at junction of midgut and hindgut. | $III$ Malpighian tubules |
| $D$ The structures used for grinding the food. | $IV$ Crop |
Choose the correct answer from the options given below:
Here, $A$ and $B$ refers to