The girth of the stem or root increases due to
A) Apical meristems
B) Lateral meristems
C) Intercalary meristems
D) All
1 Answers
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name the meristems which appear later in life of dicotyledonous and gymnosperms plants and causes increase in the girth of the organ in which they are
Correct Answer - Lateral meristems (Vascular combium and cork cambium).
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Single maize root apical meristem can give rise to more than (A)___ new cells per hour whereas cells in a watermelon may increase in size o by upto (B
Correct Answer - A-17,500 B-3,50,000
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Write the following in exponential form and redical form. (i) Cube root of 729 (ii) Fifth root of 1990 (iii) Square root of 2001 (iv) Seventh root of
Correct Answer - (i) `(729)^(1/3), root(3)(729)` (ii) `(1990)^(1/5), root(5)(1990)` (iii) `(2001)^(1/2), sqrt(2001)` (iv) `(777)^(1/7), root(7)(777)`
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(i) Simplify `(2^(2/3)-2^((-2)/3))(2^(4/3)+1+2^((-4)/3))` (ii) `[(root(6)(7))^(2)+(root(6)(7))^(-2)][(root(6)(7))^(4)-1+(root(6)(7))^(-4)]`
Correct Answer - (i) `15/4` (ii) `50/7`
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Arrange the following surds in an ascending order of magnitude: `root(3)(9),root(9)(5),root(3)(7)`
Correct Answer - `root(9)(5),root(6)(9),root(3)(7)`
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Which tissue is responsible for increase in the length of the plant ? A) Epidermis B) Apical meristem
B) Apical meristem
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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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Apical dominance means……….
(B) Apical buds dominate the lateral buds
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If we cut the apical bud of a plant ………
(B) Lateral branches develop
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The growth of root is geotropism, and the growth of stem is ………
(A) Negative geotropism
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