Select the correct code. Primary root is
$1$ . Positively geotropic
$2$ . Positively hydrotropic
$3$ . Negatively geotropic
$4$ . Negatively hydrotropic.

1, 2, 3

correct

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1, 2

correct

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2, 4

correct

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1, 3

correct

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Solution

The correct option is A $1, 2$ correct
The primary root is positively geotropic and positively hydrotropic because the roots of the plant grow downwards towards gravity and also towards the water in the soil.

So, the correct option is B.

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Similar questions

The root of a plant is :

(i) positively phototropic but negatively geotropic

(ii) positively geotropic but negatively phototropic

(iii) negatively phototropic but positively hydrotropic

(iv) negatively hydrotropic but positively phototropic

Q. The root of a plant is :
(i) positively phototropic but negatively geotropic
(ii) positively geotropic but negatively phototropic
(iii) negatively phototropic but positively hydrotropic
(iv) negatively hydrotropic but positively phototropic
(a) (i) and (ii) (b) (ii) and (iii) (c) (iii) and (iv) (d) (i) and (iv)

Name the plant organs which are :
(a) positively phototropic
(b) positively geotropic
(c) negatively geotropic
(d) positively hydrotropic

Give one example of plant part. [2 MARKS]
A. Which is positively hydrotropic as well as geotropic.
B. Which is positively phototropic but negatively geotropic.

Q. Give one example each of a plant part :
(a) which is positively hydrotropic as well as positively geotropic.
(b) which is positively phototropic but negatively geotropic.

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Select the correct code. Primary root is1. Positively geotropic2. Positively hydrotropic3. Negatively geotropic4. Negatively hydrotropic.

The correct option is A 1,2 correctThe primary root is positively geotropic and positively hydrotropic because the roots of the plant grow downwards towards gravity and also towards the water in the soil. So, the correct option is B.

Select the correct code. Primary root is
$1$ . Positively geotropic
$2$ . Positively hydrotropic
$3$ . Negatively geotropic
$4$ . Negatively hydrotropic.

The correct option is A $1, 2$ correct
The primary root is positively geotropic and positively hydrotropic because the roots of the plant grow downwards towards gravity and also towards the water in the soil.

So, the correct option is B.