_______ is a non-green runner like branch of stem, which develops from underground base of roots and found in Chrysanthemum.
(A) Corn
(B) Sucker
(C) Offset
(D) Tendril
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Let a, be the roots of the equation `x^2+x+1=0`. The equation whose roots are `alpha^19` and `beta^7` are:
correct answer is D
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In the following, determine whether the given quadratic equations have real roots and if so, find the roots: `2x^2-2sqrt(6)x+3=0` (ii) `3a^2x^2+8a b x
Correct Answer - `x=(-2b)/(3a)" or "x=(-2b)/(a)35.x=(4b^(2))/(a^(2))" or "x=(-3a^(2))/(b^(2))`
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Distinguish between anatomy of dicot stem and monocot stem.
Anatomy of Dicot stem Anatomy of Monocot stem 1. Epidermis shows presence of multicellular trichomes. Epidermis is without trichomes. 2. Hypodermis is made up of collenchymatous cells. Hypodermis is made up of sclerenchymatous cells. 3. Medullary rays are...
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What is underground stem? When does it produce aerial shoots?
In some herbaceous plants the stem which develops below soil surface is called underground stem. The underground stem remains dormant during unfavourable condition and on the advent of favourable condition...
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Potato which we eat is an underground part of a plant, however it can not be considered as root. Justify the given statement.
1. Potato is a stem tuber. 2. It is an underground stem, modified for storage of food material. 3. Special underground branches of stem at their tips becomes swollen due to storage...
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In xerophytic plant like Opuntia, the stem becomes photosynthetic. Give reason.
1. Xerophytes are the plants which grow in regions with scanty or no rainfall like desert. 2. In Xerophytes, leaves get modified into spines or get reduced in size to check...
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The mode of arrangement of leaves on the stem and the branch is known as _______ .
The correct answer is (D) phyllotaxy
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42) If \( \alpha \) and \( \beta \) are the roots of the equation \( x^{2}+x-4=0 \) form the quadratic equation whose roots are \( \alpha^{2} \) and \( \beta^{2} \).
given-: a+b=-1............ eqn ¹ ab=-4. ............. eqn ² on squaring eqn ¹ a²+b²+2ab=1 a²+b²=9 on squaring eqn ² a²b²=16 hence the eqn is x²+9x+16=0 ♥
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Roots which store food materials are called ………………… roots.
Roots which store food materials are called Taproot roots.
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One weak acid (like `CH_(3)COOH`) and its strong base together with salt (like `CH_(3)COONa`) is a buffer solution. In which pair this type of charact
Correct Answer - D `NH_(4)OH` is a weak acid and `NH_(4)Cl` is a strong base salt.
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