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

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

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-$II$
$(A)$ $RQ$ of fats	$(I)$ Less than $7$ percent
$(B)$ Energy released in fermentation	$(II)$ Less than $1$
$(C)$ $RQ$ of glucose	$(III)$ $1$
$(D)$ Net $\text{ATP}$ produced in fermentation	$(IV)$ $2$

$A$ 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

Which of the following is an essential substance required for the conversion of pyruvic acid into acetyl $CoA$?

Match the following columns:
Column-$I$ Column-$II$
$(A)$ $RQ$ of fats $(I)$ Less than $7$ percent
$(B)$ Energy released in fermentation $(II)$ Less than $1$
$(C)$ $RQ$ of glucose $(III)$ $1$
$(D)$ Net $\text{ATP}$ produced in fermentation $(IV)$ $2$

The rate of respiration can be checked (inhibited) by:

The three boxes in this diagram represent the three major biosynthetic pathways in aerobic respiration. Arrows represent net reactants or products. Arrows numbered $4, 8$ and $12$ can all be

Steps of respiration are controlled by

Vedclass Test Series

Exam Paper Generator

Online Exam Module