Chapter 6

The branch of biology deals with internal structure of plants is called (a) Morphology (b) Physiology (c) Anatomy (d) Biochemistry

Find out the incorrect statement: (a) Monocot and dicot are anatomically different. (b) Internal structures also show adaptations to diverse environment. (c) The basic unit of plant is made up of cells. (d) Different organs of plants are similar in their internal structure.

A tissue is a group of cells having a (a) Common origin and always a common function. (b) Common origin and always a different function. (c) Common origin and usually a common function. (d) Different origin and a different function.

Depending on whether the cells being formed are capable of dividing or not, the plant tissues are classified into how many types? (a) 1 (b) 2 (c) 3 (d) 4

Find the example of primary meristem. (a) Apical meristem (b) Intercalary meristem (c) Lateral meristem (d) Both (a) and (b)

Apical meristem is present at (a) Root and shoot apex (b) Place between mature tissue (c) Vascular cambium (d) Cork cambium

Axillary bud is (a) Present in axil of leaf (b) Capable of forming branch (c) Capable of forming flower (d) All of these

Which tissue occurs in grasses and regenerate parts removed by the grazing herbivores? (a) Apical meristem (b) Lateral meristem (c) Intercalary meristem (d) All of these

The meristem that occurs in the mature regions of roots and shoots of many plants, particularly those that produce woody axis and appear later than primary meristem, is called (a) Intercalary meristem (b) Apical meristem (c) Secondary or lateral meristem (d) All the above

Find the example of lateral meristem. (a) Fascicular cambium (b) Interfascicular cambium (c) Cork-cambium (d) All of these

The newly-formed cells from primary and secondary meristem, which becomes structurally and functionally specialized and lose the ability to divide are known as (a) Permanent cells (b) Mature cells (c) Both (a) and (b) (d) None of these

During the formation of the primary plant body, the specific regions of the apical meristem produces (a) Dermal tissues (b) Ground tissues (c) Vascular tissues (d) All of these

Permanent tissues, which have all cell similar in structure and function are called (a) Complex tissues (b) Simple tissues (c) Meristematic tissues (d) All of these

Permanent tissues, which have many different types of cells are called (a) Complex tissues (b) Simple tissues (c) Meristematic tissues (d) All of these

Which tissue is the most abundant in plant organ? (a) Parenchyma (b) Collenchyma (c) Sclerenchyma (d) Sclereids

The following features belong to I. Cells are generally isodiametric. They may be spherical, oval, round, polygonal, or elongated in shape. II. Cells have thin wall and are made up of cellulose. III. Cells may be closely packed or may have intercellular spaces. IV. Tissue perform various kind of functions like photosynthesis, storage and secretion. (a) Collenchyma (b) Parenchyma (c) Xylem (d) Sclerenchyma

The following features belong to I. Cells are thick at corner due to the deposition of cellulose, hemicelluloses and pectin. II. Cells may contain chloroplast and gets assimilated. III. Intercellular spaces are absent. IV. Provide mechanical support to growing parts of the plant such as young stem and petiole of leaf. (a) Collenchyma (b) Parenchyma (c) Xylem (d) Sclerenchyma

Which simple tissue is characterized by pits? (a) Collenchyma (b) Parenchyma (c) Sclerenchyma (d) All of these

are spherical, oval, cylindrical, highly thickened dead cell with very narrow cavities. (a) Sieve tube (b) Companion cell (c) Fibres (d) Sclereids

Secondary thickening in collenchyma is of (a) Cellulose (b) Hemicellulose (c) Pectin (d) All of these

On what basis we classify sclerenchyma into fibres or sclereids? (a) Structure (b) Origin (c) Development (d) All of these

Sclereids are present in the pulp of (a) Guava (b) Pear (c) Sapodilla (d) All of these

Sclereids are present in (a) Fruit wall of nuts (b) Seed coat of legumes (c) Leaves of tea (d) All of these

Which tissue is usually dead and without protoplast? (a) Parenchyma (b) Collenchyma (c) Sclerenchyma (d) All of these

The collenchyma tissue is characterized by (a) Elongated cells with thickness at the corners. (b) Isodiametric cells with deposits of cellulose and pectin at the corners. (c) Elongated cells with deposits of cellulose and pectin all over the wall. (d) Isodiametric cells with thickness all over the cell wall.

In which way collenchyma differs from sclerenchyma? (a) Retaining protoplasm at maturity (b) Having thick walls (c) Having wide lumen (d) Being meristematic

Walls of sclerenchyma are (a) Rigid (b) Lignified (c) Pectinized (d) Suberized

Collenchyma differs from parenchyma in having (a) Living protoplasm (b) Cellulose walls (c) Vacuoles (d) Pectin deposits at corners

Which of the following are simple tissues? (a) Parenchyma, xylem and phloem (b) Parenchyma, collenchyma and sclerenchyma (c) Parenchyma, xylem and collenchymas (d) Parenchyma, xylem and sclerenchyma

What is the most common type of permanent tissue found in almost all plants? (a) Sclerenchyma (b) Collenchyma (c) Parenchyma (d) Xylem

Which of the following tissues gives tensile strength against bending and swaying? (a) Parenchyma (b) Collenchyma (c) Sclereids (d) All of these

A simple mechanical tissue devoid of lignin is (a) Parenchyma (b) Collenchymas (c) Sclerenchyma (d) Chlorenchyma

The primary plant body is made up of (a) Meristematic tissues (b) Simple tissues (c) Complex tissues (d) All the above

Hard lignified thick-walled long and pointed cells of a plant are (a) Parenchyma (b) Sclerenchyma fibers (c) Collenchymas (d) Sclereids

A thick-walled lignified simple mechanical tissue is (a) Parenchyma (b) Collenchymas (c) Sclerenchyma (d) Chlorenchyma

How many types of cells are present in complex tissue? (a) More than one (b) More than three (c) One type (d) Three type

The functions of xylem are (a) Conduct water from root to stem and leaves (b) Conduct mineral from root to stem and leaves (c) Provide mechanical strength to plant (d) All of these

Xylem is composed of how many different elements? (a) 1 (b) 2 (c) 3 (d) 4

Gymnosperm lacks in their xylem. (a) Tracheids (b) Vessels (c) Xylem fibres (d) Xylem parenchyma

Select the correct matching: Column I Column II A. Tracheids -4. 1 . Elongated and tube like cells with thick and lignified wall and tapering ends. B. Vessels \- 2. Tube like structure made up of many cells, each cell with lignified wall and large central cavity. C. Xylem fibre \(-\quad\) 3. Highly thickened walls and obliterated central humans. D. Xylem parenchyma 4\. Living cell with thin cell wall made up of cellulose. (a) A-2, B-1, C-3, D-4 (b) A-3, B-1, C-2, D-4 (c) \(\mathrm{A}-1, \mathrm{~B}-2, \mathrm{C}-3, \mathrm{D}-4\) (d) \(\mathrm{A}-3, \mathrm{~B}-2, \mathrm{C}-1, \mathrm{D}-4\)

Xylem parenchyma stores (a) Starch (b) Fat (c) Tannins (d) All of these

Phloem parenchyma stores (a) Resins (b) Latex (c) Mucilage (d) All of these

Select the incorrect statement from the following: (a) Vessel members are interconnected through perforations in their common walls. (b) Presence of vessel is a characteristic feature of angiosperms. (c) Radial conduction of water takes place by the ray parenchymatous cells. (d) Tracheids, vessel, xylem sclerenchyma and parenchyma are without protoplast.

Protoplast is absent in all except (a) Tracheids (b) Vessels (c) Xylem sclerenchyma (d) Xylem parenchyma

The primary xylem elements formed are called is called (a) protoxylem, protoxylem (b) metaxylem, metaxylem (c) protoxylem, metaxylem (d) metaxylem, protoxylem

In stem (a) Protoxylem lies towards pith (centre) (b) Metaxylem lies towards periphery of the organs (c) Endarch arrangement is present (d) All the above

In root (a) Endarch arrangement is present (b) Exarch arrangement is present (c) Protoxylem lies towards the centre (d) Metaxylem lies towards the periphery

Phloem transports (a) Water (b) Mineral (c) Food materials (d) All of these

How many elements are composed in phloem in angiosperm? (a) 1 (b) 2 (c) 3 (d) 4

Phloem is composed of all except (a) Sieve tube elements (b) Companion cells (c) Phloem parenchyma and sclerenchyma (d) Vessels