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
Match the following:

Choose the correct pair from the following:

Identify A, B, C plants in a series based on these characters of roots:
A. Roots at lower nodes of stem
B. Roots absorb water and food from host plant
C. Root forming nodules
Plants which perform photosynthesis by these parts:
a) Ribbon like roots
b) Fleshy cylindrical stem
c) Needle like stem
d) Flattened stem
From the diagram answer the following:


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.
Assertion (A): Buds present in the axils of leaves are capable of forming a branch or a flower.
Reason (R): Axillary buds are constituted by the shoot apical meristems.