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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

Monjur Alahi

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)____ times.


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Salim Ahmed Kawsar

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Correct Answer - A-17,500
B-3,50,000

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Identify the two correct statements from the following : (i) Apiculture means apical meristem culture. (ii) Spinach is uron-enriched. (iii) Green revo

(i) spinach is iron-enriched. (ii) green revolution has resulted in improved pulse-yields.

2 Answers 1 views
Plasma cells are derived from (A) Memory B-cells  (B) Helper T-cells  (C) Memory T-cells  (D) Cytotoxic T-cells

Correct option is: (C) Memory T-cells

2 Answers 1 views
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)`

2 Answers 1 views
(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`

2 Answers 1 views
Shiva can type `x` words per hour while Sreevias can type `y` words per hour. Shiva works for 5 hours per day and Sreenvias works for 7 hours per day.

Correct Answer - `5x + 7y ge 700`

2 Answers 1 views
Machine A can produce 6 items per hour and machine B can produce 11 items per hours. If machine A works for x hours and B works for y hours in a day a

Correct Answer - `6x + 11y le 200`

2 Answers 1 views
The length of a cuboid is 2 cm more than its height, whereas its breadth is 2 cm less than the height. Its height is equal to the side of a square hav

Correct Answer - 960 `cm^(3)`

2 Answers 3 views
Fill in the blanks : (iii)The fastest known enzyme is ____ found in red blood cells. It hydrates 36 millions molecules of `CO_2` to ___ and ___ in jus

Correct Answer - Carbonic anhydrase, bicarbonate ions `(HCO_(3)^(-)), H^(+)`

2 Answers 1 views
The coefficient of cubical expansion of a solid is the increase in volume per unit original volume at 0 °C per degree rise in _________. 

Correct option is: (C) temperature

2 Answers 2 views
Which tissue is responsible for increase in the length of the plant ?  A) Epidermis  B) Apical meristem 

B) Apical meristem

2 Answers 1 views

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