Anatomy of Flowering Plants

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The main function of bulliform cells in grasses is :

In the seeds of cereals, the outer covering of endosperm separates the embryo by a protein-rich layer called:

Find the statement that is NOT correct with regard to the structure of monocot stem.

Which of the following helps in maintenance of the pressure gradient in sieve tubes?

Which of the following simple tissues are commonly found in the fruit walls of nuts and pulp of pear?

Given below are two statements:
Statement I: In a dicotyledonous leaf, the adaxial epidermis generally bears more stomata than the abaxial
epidermis.
Statement II: In a dicotyledonous leaf, the adaxially placed palisade parenchyma is made ...

In the given figure, which component has thin outer walls and highly thickened inner walls?

Given below are two statements:
Statement I : Parenchyma is living but collenchyma is dead tissue.
Statement II : Gymnosperms lack xylem vessels but presence of xylem vessels is the characteristic of angiosperms.
In the light of the above s...

Consider the following plant tissues :
(A) Axillary buds
(B) Fascicular vascular cambium
(C) Interfascicular cambium
(D) Cork cambium
(E) Intercalary meristem
Identify the lateral meristems among the above.

Consider the following tissues in the stelar region of a stem showing secondary growth.
(A) Primary xylem
(B) Secondary xylem
(C) Primary phloem
(D) Secondary phloem
Arrange these in the correct sequence of their position from pith towards ...

The transverse section of a plant part showed polyarch, radial and exarch xylem, with endodermis and pericycle. The plant part is identified as :

Given below are two statements :
Statement I : Endarch and exarch are the terms often used for describing the position of secondary xylem
in the plant body.
Statement II : Exarch condition is the most common feature of the root system.
In ...

Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R :
Assertion A : Late wood has fewer xylary elements with narrow vessels.
Reason R : Cambium is less active in winters.
In the light of the...

Initiation of lateral roots and vascular cambium during secondary growth takes place in cells of

Interfascicular cambium is present between

The anatomy of springwood shows some peculiar features. Identify the correct set of statements about springwood.
(a) It is also called as the earlywood
(b) In spring season cambium produces xylem elements with narrow vessels
(c) It is light...

what is the role of large bundle sheath cells found around the vascular bundles in C4 plants?

In old trees the greater part of secondary xylem is dark brown and resistant to insect attack due to :
(a) secretion of secondary metabolities and their deposition in the lumen of vessels.
(b) deposition of organic compounds like tannins an...

Read the following statements about the vascular bundles:
(a) In roots, xylem and phloem in a vascular bundle are arranged in an alternate manner along the different radii.
(b) Conjoint closed vascular bundles do not possess cambium
(c) In ...

"Girdling Experiment" was performed by Plant Physiologists to identify the plant tissue through which:

Select the correct pair.

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Identify the incorrect statement.

The transverse section of a plant shows following anatomical features :
(i) Large number of scattered vascular bundles surrounded by bundle sheath (ii) Large conspicuous parenchymatous ground tissue (iii) Vascular bundles conjoint and clos...

The roots that originate from the base of the stem are

Phloem in gymnosperms lacks :

Which of the statements given below is not true about formation of Annual Rings in trees?

What is the direction of movement of sugars in phloem?

Casparian strips occur in

Stomata in grass leaf are

Plants having little or no secondary growth are

Secondary xylem and phloem in dicot stem are produced by

Which of the following is made up of dead cells ?

Identify the wrong statement in context of heartwood :

Root hairs develop from the region of :

The vascular cambium normally gives rise to :

Cortex is the region found between -

The balloon-shaped structures called tyloses

Specialised epidermal cells surrounding the guard cells are called -

Vascular bundles in monocotyledons are considered closed because

A major characteristic of the monocot root is the presence of :

Read the different components from (1) to
(4) in the list given below and tell the
correct order of the components with
reference to their arrangement from outer
side to inner side in a woody dicot stem :
(1) Secondary cortex
(2) Wood
(3...

Tracheids differ from other tracheary elements in :

You are given a fairly old piece of dicot stem and a dicot root. Which of the following
anatomical structures will you use to distinguish between the two?

Meristematic tissue responsible for increase in girth
of tree trunk is :

Which of the following statements is not true for
stomatal apparatus ?

Bundle sheath cells :

Interfascicular cambium develops from the cells of :