MCQ
Which hormone was first isolated from human urine?
- ✓Auxin
- B$ABA$
- CEthylene
- DGibberellic acid
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Assertion $(A)$:All vertebrates are chordates but all chordates are not vertebrates.
Reason $(R)$:Notochord is replaced by vertebral column in the adult vertebrates.
In the light of the above statements, choose the most appropriate answer from the options given below:
|
Column $I$ (Terms) |
Column $II$ (Features) |
| $A.$ Exocrine gland | $I.$ They help to stop substances fromleaking across a tissue |
| $B.$ Endocrine gland | $II.$ Hormones are secreted directlyinto the fluid bathing the gland |
| $C.$ Tight junctions | $III.$ They perform cementing to keepneighbouring cells together. |
| $D.$ Adhering junctions | $IV.$ Secretes mucus, saliva, earwax,oil, milk, digestive enzymes andother cell products |
(1)Assimilatory roots — Photosynthesis
(2)Fasciculated roots — Food storage
(3)Stilt root — Mechanical support
(4)Sucking root — Absorption of moisture from the air
Select the correct answer -