Find incorrect statements related to water relations in plants:
A. Water potential difference is the drawing force for osmosis.
B. The driving force of diffusion is the concentration gradient.
C. Pressure potential is negative.
Analyzing each statement.
Statement A is correct as osmosis is driven by a difference in water potential.
Statement B is also correct; diffusion indeed occurs due to a concentration gradient.
Statement C is generally incorrect as pressure potential in plant cells is typically positive due to turgor pressure, though it can become negative under severe water stress.
From the diagram answer the following:
Find the correct statements regarding the structure of xylem and phloem:
I. Xylem parenchyma store starch or fat or Tannins
II. Xylem parenchyma have highly thickened walls and obliterated central lumens
III. Companion cells are controlled by nucleus of sieve tubes
IV. Phloem parenchyma is absent in most of the monocots
Plants which perform photosynthesis by these parts:
a) Ribbon like roots
b) Fleshy cylindrical stem
c) Needle like stem
d) Flattened stem
Identify the correct statement with reference to the diagram given below:
What are X and Y respectively in the following set of reactions?
What are X and Y respectively in the following reactions?
Observe the following reactions:
The correct answer is: