A student has taken a twig from a plant. She/ | vedclass

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Question

(B) When a twig is freshly cut from a plant,the fluid that exudes from the cut surface is primarily phloem sap.Phloem sap consists of water,sugars (ma

Vedclass · Accepted Answer

Phloem sap

Vedclass · Answer

(B) When a twig is freshly cut from a plant,the fluid that exudes from the cut surface is primarily phloem sap.Phloem sap consists of water,sugars (mainly sucrose),amino acids,and other organic nutrients being transported from the source (leaves) to the sink (other plant parts).Since the phloem is under positive pressure (pressure flow hypothesis),cutting the stem causes the sap to exude from the phloem tubes.Therefore,the correct answer is $B$.

Column-$I$	Column-$II$
$P$. Aerobic respiration	$I$. Yeast
$Q$. Lactic acid fermentation	$II$. Some bacteria and animal muscles
$R$. Alcoholic fermentation	$III$. Human leukocytes

$A$ student has taken a twig from a plant. She/he observes a droplet of fluid exuding from the cut surface of the twig. What is this fluid?

Similar Questions

The following is a simplified scheme showing the fate of glucose during aerobic and anaerobic respiration. Identify the end products that are formed at stages indicated as $A, B, C$ and $D$. Identify the correct option from those given below.

Match the following columns:

Column-$I$ Column-$II$

$P$. Aerobic respiration $I$. Yeast

$Q$. Lactic acid fermentation $II$. Some bacteria and animal muscles

$R$. Alcoholic fermentation $III$. Human leukocytes

Which of these statements is incorrect?

Out of $95\%$ of surplus water lost by plants in atmosphere through aerial parts, the water lost in liquid form constitutes . . . . . . .

Choose the incorrect sentence.

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