Answer
Verified
386.7k+ views
Hint: Some chemicals which are spread in the field for getting rid of several weeds is called weedicide. It affects the dicots mostly.
Complete Answer:
1) The full form of 2,4-D is 2,4-dichlorophenoxyacetic acid. It is auxin which is produced synthetically. It affects mostly the leaf of a plant and used extensively in treating weeds. It is affected in killing dicot plant tissues. Though it is effective in leaves but it does not work in case of monocot plants such as rice, corn,grasses etc.
2) The full form of NAA is Naphthalene acetic acid that is a synthesized plant hormone used in the growth of plantlets in plants like sugarcane and others. It bears a carboxymethyl group in its first position. It is used in the plant growth horticulture section.
3) The full form of IBA is indole-3-butyric acid (IBA) that is also a synthetically produced hormone used in the plant growth system. It is used as auxin hormone precursor. It is light yellow in colour and is crystalline solid in nature.
4) The full form of IAA is Indole-3-Acetic Acid which is the another name of the plant hormone Auxin. It is produced in the apical portion of plants i.e. apical buds and used for inducing cell division or elongation.
Hence Option A: 2,4-D is the correct answer.
Note: Excluding 2,4-D others are synthetically produced hormones which are effective in plants. 2,4-D is also extensively used as herbicide.
Complete Answer:
1) The full form of 2,4-D is 2,4-dichlorophenoxyacetic acid. It is auxin which is produced synthetically. It affects mostly the leaf of a plant and used extensively in treating weeds. It is affected in killing dicot plant tissues. Though it is effective in leaves but it does not work in case of monocot plants such as rice, corn,grasses etc.
2) The full form of NAA is Naphthalene acetic acid that is a synthesized plant hormone used in the growth of plantlets in plants like sugarcane and others. It bears a carboxymethyl group in its first position. It is used in the plant growth horticulture section.
3) The full form of IBA is indole-3-butyric acid (IBA) that is also a synthetically produced hormone used in the plant growth system. It is used as auxin hormone precursor. It is light yellow in colour and is crystalline solid in nature.
4) The full form of IAA is Indole-3-Acetic Acid which is the another name of the plant hormone Auxin. It is produced in the apical portion of plants i.e. apical buds and used for inducing cell division or elongation.
Hence Option A: 2,4-D is the correct answer.
Note: Excluding 2,4-D others are synthetically produced hormones which are effective in plants. 2,4-D is also extensively used as herbicide.
Recently Updated Pages
How do you arrange NH4 + BF3 H2O C2H2 in increasing class 11 chemistry CBSE
Is H mCT and q mCT the same thing If so which is more class 11 chemistry CBSE
What are the possible quantum number for the last outermost class 11 chemistry CBSE
Is C2 paramagnetic or diamagnetic class 11 chemistry CBSE
What happens when entropy reaches maximum class 11 chemistry JEE_Main
Calculate the volume occupied by 88 gram of CO2 at class 11 chemistry CBSE
Trending doubts
Difference Between Plant Cell and Animal Cell
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
How do you solve x2 11x + 28 0 using the quadratic class 10 maths CBSE
Select the correct plural noun from the given singular class 10 english CBSE
What organs are located on the left side of your body class 11 biology CBSE
The sum of three consecutive multiples of 11 is 363 class 7 maths CBSE
What is the z value for a 90 95 and 99 percent confidence class 11 maths CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
How many squares are there in a chess board A 1296 class 11 maths CBSE