Anatomy of flowering plants practice · Mixed difficulty

On the basis of their structure and location, tissue system is of …… in plants

A nail is driven into the trunk of a 30 years old tree at a point 1 m above the soil level. The tree grows in height at the rate of 0.5m a years. After three years, nail will be

Most primitive type of simple tissue is

Assertion : In angiosperms, the conduction of
water is more efficient because their xylem has
vessels.

Reason : Conduction of water by vessel elements
is an active process with energy supplied by
xylem parenchyma rich in mitochondria.

Assertion : Open vascular bundles are found
in dicot stem & gymnosperm.

Reason : Cambium is absent in between xylem
& phloem.

Which of the following structure constitute stele :

I. The 1° and 2° phloem get gradually crushed due to the continued formation and accumulation of 2° xylem
II. 1° xylem remains more or less intact in or near the centre
III. Secondary growth results in an increase in the length of the axis
Select the correct statements

In barley stem vascular bundles are?

Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by

Cotton fibres which are obtained from Gossypium are:

Which of the characters are found in cells producing primary tissues ?

(I) Rich in protoplasm, conspicuous nucleus

(II) Thick cell wall, few plasmodesmatal connections

(III) Thin cell wall, many plasmodesmatal connections

(IV) Lignin in cell wall, inconspicuous nucleus

Meristematic tissue are

I. It is resistant to microorganisms II. It comprises dead elements III. It comprises highly lignified cell wall IV. It is the peripheral part V. It is dark and tough Which of the above property doesn’t belongs to heart wood?

Which of the following is not a function of parenchyma tissue?

Companion cells in plans are associated with :

In woody trees, the exchange of gases between the outer atmosphere and the internal tissue of the stem takes place through

Statement-(I): Anatomically, all the tissues present on the inner side of endodermis such as pericycle, vascular bundles and pith constitute the stele.

Statement-(II): Eustele is the stele in which vascular bundles are arranged in the form of a ring as present in dicot stems.

Assertion (A) Phloem fibres or bast fibres are made up of
collenchymatous cells.
Reason (R) Phloem fibres are generally found in secondary
pholem.

Which of the following is the region of cell division?

As compared to the dicot root, monocotyledon root have

Aerenchyma is present in which of the following plants ?
(1) Neptunia
(2) potamogeton
(3) Bryophyllum
(4) Vallisneria

All of the given characteristics are related to parenchyma tissue except

A tree grows at the rate of 0.5 m per year. What will be the height of the board fixed at 1.5 m above the base five years ago?

Various functions like photosynthesis, storage, excretion performed by _______.

In monocotyledonous stem, the vascular bundles are

Vascular bundle in the laves of dicots are surrounded by

A plant tissue when stained showed the presence of hemicellulose and pectin in cells wall of its cells. The tissue is called

Sclerenchyma mainly provides

Lateral roots develop from primordia originated by the division of

Early wood is formed in dicot plant during