Question 4-Match the following- array 1 - WlineA- IAA - 1- Herring sperm DNA lIYhlineB- ABA - 2- Bolting WlhlineC- Ethylene - 3- Stomatal closure llthlineD- GA - 4- Weed-free lawns IIVlineE- cytokinins - 5- Ripening of fruits llthline lendarray CodesWeginmatrix - Ea 4 - 3 - 5 - 2 - 1b 5 - 3 - 4 - 2 - 1c 4 - 1 - 4 - 3 - 2 d - 3 - 2 - 1 - 4 1end matrix

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Byju's Answer

Standard XII

Biology

Role of Auxin

Question 4:Ma...

Question

Question 4:

Match the following.
$\begin{matrix} Column~I & Column~II A . I A A & 1. H e r r i n g s p e r m D N A B . A B A & 2. B o l t i n g C . E t h y l e n e & 3. S t o m a t a l c l o s u r e D . G A & 4. W e e d - f r e e l a w n s E . c y t o k i n i n s & 5. R i p e n i n g o f f r u i t s \end{matrix}$
Codes
$\begin{matrix} A & B & C & D & E (a) 4 & 3 & 5 & 2 & 1 (b) 5 & 3 & 4 & 2 & 1 (c) 4 & 1 & 4 & 3 & 2 (d) 5 & 3 & 2 & 1 & 4 \end{matrix}$

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Solution

A. IAA-Weed free lawn 2-4 D and synthetic indole acetic acid kill the broad leaf weeds. Thus, used as weedicides.
B. ABA-Stomatal closure ABA is a stress hormone. Under water stressed conditions, it shuts down stomata to reduce the rate of transpiration.
C. Ethylene, a gaseous hormone is responsible for ripening of fruits.
D. GA Gibberellic acid does the phenomenon of bolting, i.e., when sprayed on the plant, it increases the internodal region of stem, thus making a plant extremely tall.
E. Cytokinin was isolated from herring sperm DNA, for the first time.
Other option are incorrect.

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Match the following columns
$\begin{matrix} C o l u m n I & C o l u m n I I A . & H u m a n u r i n e & 1. & C y t o k i n i n B . & G i b b e r e l l a f u j i k u r o i & 2. & A u x i n C . & H e r r i n g f i s h D N A & 3. & E t h y l e n e D . & R i p e n i n g o f f r u i t s & 4. & A b s c i s i c a c i d E . & A g e d l e a v e s o f p l a n t s & 5. & G i b b e r e l l i n s \end{matrix}$

Q. Match the following.

\begin{matrix} Column A & Column B (a) Maitri and Dakshin Gangotri & (1) Antarctica (b) The Andes & (2) South America (c) Isthmus of Panama & (3) Link between South and North America (d) Eurasia & (4) Combined landmass of Europe and Asia (5) Asia \end{matrix}

Match the following:-

	A		B
1	Cell elongation and apical dominance	a	Ethylene
2	Cell division	b	Gibberellins
3	Wilting of leaves	c	Auxin
4	Fruit ripening	d	Cytokinin
5	Breaking seed dormancy	e	Abscisic acid

Q. Match the following and choose the correct option

\begin{matrix} a . F a m i l y & 1. T u b e r o s u m b . K i n g d o m & 2. P o l y m o n i a l s c . O r d e r & 3. S o l a n u m d . S p e c i e s & 4. P l a n t a e e . G e n u s & 5. S o l a n a c e a e \end{matrix}

Q. Match the items in Column I with Column II and choose the correct option.

	List I		List II
A	Human urine	1	Cytokinin
B	Gibberella fujikuroi	2	Auxin
C	Herring fish DNA	3	Ethylene
D	Ripening fruits	4	Abscisic acid
E	Aged leaves of plants	5	Gibberellins

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Question 4: Match the following. Column~I Column~IIA. IAA1. Herring sperm DNAB. ABA2. BoltingC. Ethylene3. Stomatal closureD. GA4. Weed−free lawnsE. cytokinins5. Ripening of fruits Codes ABCDE(a) 43521(b) 53421(c) 41432(d) 53214