Anatomy of Stem

Which of the following tissues are present in dicot stem but absent in monocot stem?

A student observed transverse sections of $2$ plant parts under microscope. In that T.S of '$\mathrm{A}$' has many vascular bundles arranged in a ring, while T.S of '$\mathrm{B}$' has many scattered vascular bundles. Identify the materials '$\mathrm{A}$' and '$\mathrm{B}$' in the same order.

Assertion: Endodermis is also considered a starch sheath in the dicot stem. 
Reason: The endodermis cells are rich in grains of starch.

Endodermis of dicot stem is called as:

Pith is well-developed in the dicotyledonous stem and .....(I).......

The cross section of a specimen showed more than six vascular bundles distributed throughout the ground tissue under microscope. The specimen belongs to

Identify the cells/parts based on the characters given below respectively.
- Highly thickened dead cells with narrow lumen
- Lysigenous cavities with water
- Radially placed parenchymatous cells between vascular bundles
- Polyarch xylem bundles
A: Monocot stem
B: Leaves of tea
C: Medullary rays
D: Monocot root

Conjoint, open and endarch type of vascular bundles are common in which of the following?

The innermost layer of the cortex is called

Epidermal hairs of shoot system
(I) Unicellular or Multicellular
(II) Multicellular, branched or unbranched
(III) Secretary in function
(IV) Absorbs water
(V) Prevent transpiratory water loss

Starch sheath is

Pericycle of dicot root does not take part in the formation of

The water cavity present in the xylem of maize stem vascular bundles is

Which of the following types of stele is found in monocots?

Which of the following has vascular bundles enclosed within a well-developed sclerenchymatous sheath?

Read the following statements (i-iv) having 1-2 blanks in each one of them. Select the option that correctly fills these blanks.

(i) In monocot root, a large number of vascular bundles are arranged in the form of a                  around the central                        .
(ii) Due to the presence of                       , the endodermal cells do not allow apoplast pathway movement of substances between cortex and pericycle, in a primary dicot root.
(iii) The epidermis of stem of sunflower bears several unbranched                      hair.
(iv) The central                     portion of a dicot stem is usually occupied by parenchymatous cells.

How many statement is/are incorrect regarding anatomy of dicot stem?

The Sequence of different components of woody dicot stem from outside to inside is:
(i) Secondary cortex
(ii) Wood
(iii) Secondary phloem
(iv) Phellem

Quercus have:

Read the following statements (i-iv) and select the option that correctly represents them.

(I) Aerial hairs are unicellular appendages that enclose stationary hair and protect plant parts against sudden temperature changes.
(ii) Glandular trichomes secrete oil and impart a characteristic odour to the plants.
(iii) Prickles are multicellular emergences devoid of vascular supply.
(iv) The digestive glands of insectivorous plants are also trichome in nature.