CBSE Class 11 Biology Anatomy of Flowering Plants Worksheet

Objective Type Questions

Question. The vascular cambium normally gives rise to
(a) primary phloem
(b) secondary xylem
(c) periderm
(d) phelloderm.
Answer.B

Question. Root hair develop from the region of
(a) elongation
(b) root cap
(c) meristematic activity
(d) maturation. 
Answer.D

Question. Which of the following is made up of dead cells?
(a) Collenchyma
(b) Phellem
(c) Phloem
(d) Xylem parenchyma
Answer.B

Question. Identify the wrong statement in context of heartwood.
(a) It is highly durable.
(b) It conducts water and minerals efficiently.
(c) It comprises dead elements with highly lignified walls.
(d) Organic compounds are deposited in it.
Answer.B

Question. Cortex is the region found between
(a) epidermis and stele
(b) pericycle and endodermis
(c) endodermis and pith
(d) endodermis and vascular bundle.
Answer.A


Question. The balloonshaped structures called tyloses
(a) originate in the lumen of vessels
(b) characterise the sapwood
(c) are extensions of xylem parenchyma cells into vessels
(d) are linked to the ascent of sap through xylem vessels. 
Answer.C

Question. Specialised epidermal cells surrounding the guard cells are called
(a) bulliform cells
(b) lenticels
(c) complementary cells
(d) subsidiary cells. 
Answer.D

Question. Read the different components from (i) to (iv) 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.
(i) Secondary cortex (ii) Wood
(iii) Secondary phloem (iv) Phellem
The correct order is
(a) (iv), (i), (iii), (ii)
(b) (iv), (iii), (i), (ii)
(c) (iii), (iv), (ii), (i)
(d) (i), (ii), (iv), (iii)
Answer.A

Question. A major characteristic of monocot root is the  presence of
(a) vasculature without cambium
(b) cambium sandwiched between phloem and xylem along the radius
(c) open vascular bundles
(d) scattered vascular bundles.
Answer.A

Question. Vascular bundles in monocotyledons are considered closed because
(a) there are no vessels with perforations
(b) xylem is surrounded all around by phloem
(c) a bundle sheath surrounds each bundle
(d) cambium is absent.
Answer.D

Question. 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?
(a) Secondary xylem
(b) Secondary phloem
(c) Protoxylem
(d) Cortical cells
Answer.C

Question. Tracheids differ from other tracheary elements in
(a) having casparian strips
(b) being imperforate
(c) lacking nucleus
(d) being lignified.
Answer.B

Question. Lenticels are involved in
(a) food transport
(b) photosynthesis
(c) transpiration
(d) gaseous exchange.
Answer.D

Question. Age of a tree can be estimated by
(a) number of annual rings
(b) diameter of its heartwood
(c) its height and girth
(d) biomass. 
Answer.A

Question. Interfascicular cambium develops from the cells of
(a) endodermis
(b) pericycle
(c) medullary rays
(d) xylem parenchyma. 
Answer.C

Question. Meristematic tissue responsible for increase in girth of tree trunk is
(a) intercalary meristem
(b) lateral meristem
(c) phellogen
(d) apical meristem.
Answer.B

Question. Bundle sheath cells
(a) are rich in PEP carboxylase
(b) lack RuBisCO
(c) lack both RuBisCO and PEP carboxylase
(d) are rich in RuBisCO.
Answer.D

Question. Which of the following statements is not true for stomatal apparatus?
(a) Guard cells invariably possess chloroplasts and mitochondria.
(b) Guard cells are always surrounded by subsidiary cells.
(c) Stomata are involved in gaseous exchange.
(d) Inner wall of guard cells are thick.
Answer.B

Question. Gymnosperms are also called soft wood spermatophytes because they lack
(a) cambium
(b) phloem fibres
(c) thickwalled tracheids
(d) xylem fibres. 
Answer.D

Question. Water containing cavities in vascular bundles are found in
(a) sunflower
(b) maize
(c) Cycas
(d) Pinus. 
Answer.B

Question. Closed vascular bundles lack
(a) ground tissue
(b) conjunctive tissue
(c) cambium
(d) pith. 
Answer.C

Question. Companion cells are closely associated with
(a) sieve elements
(b) vessel elements
(c) trichomes
(d) guard cells.
Answer.A

Question. The common bottle cork is a product of
(a) dermatogen
(b) phellogen
(c) xylem
(d) vascular cambium. 
Answer.B

Question. As compared to a dicot root, a monocot root has
(a) more abundant secondary xylem
(b) many xylem bundles
(c) inconspicuous annual rings
(d) relatively thicker periderm.
Answer.B

Question. The cork cambium, cork and secondary cortex are collectively called
(a) phelloderm
(b) phellogen
(c) periderm
(d) phellem.
Answer.C

Question. Ground tissue includes
(a) all tissues external to endodermis
(b) all tissues except epidermis and vascular bundles
(c) epidermis and cortex
(d) all tissues internal to endodermis.
Answer.B

Question. Some vascular bundles are described as open because these
(a) are surrounded by pericycle but no endodermis
(b) are capable of producing secondary xylem and phloem
(c) possess conjunctive tissue between xylem and phloem
(d) are not surrounded by pericycle.
Answer.B

Question. Function of companion cells is
(a) providing energy to sieve elements for active transport
(b) providing water to phloem
(c) loading of sucrose into sieve elements by passive transport
(d) loading of sucrose into sieve elements.
Answer.D

Question. Heartwood differs from sapwood in
(a) presence of rays and fibres
(b) absence of vessels and parenchyma
(c) having dead and nonconducting elements
(d) being susceptible to pests and pathogens.
Answer.C

Question. Which one of the following is not a lateral meristem?
(a) Intrafascicular cambium
(b) Interfascicular cambium
(c) Phellogen
(d) Intercalary meristem 
Answer.D

Question. The chief water conducting elements of xylem in gymnosperms are
(a) vessels
(b) fibres
(c) transfusion tissue
(d) tracheids. 
Answer.D

Question. Transport of food material in higher plants takes place through
(a) companion cells
(b) transfusion tissue
(c) tracheids
(d) sieve elements.
Answer.D

Question. In barley stem vascular bundles are
(a) closed and scattered
(b) open and in a ring
(c) closed and radial
(d) open and scattered. 
Answer.A

Question. Palisade parenchyma is absent in leaves of
(a) mustard
(b) soybean
(c) gram
(d) Sorghum.
Answer.D

Question. The annular and spirally thickened conducting elements generally develop in the protoxylem when the root or stem is
(a) elongating
(b) widening
(c) differentiating
(d) maturing.
Answer.C

Question. Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by
(a) absence of secondary phloem
(b) presence of cortex
(c) position of protoxylem
(d) absence of secondary xylem.
Answer.C

Question. Vascular tissues in flowering plants develop from
(a) periblem
(b) dermatogen
(c) phellogen
(d) plerome.
Answer.D

Question. The length of different internodes in a culm of sugarcane is variable because of
(a) size of leaf lamina at the node below each internode
(b) intercalary meristem
(c) shoot apical meristem
(d) position of axillary buds. 
Answer.B

Question. Passage cells are thin walled cells found in
(a) phloem elements that serve as entry points for substance for transport to other plant parts
(b) testa of seeds to enable emergence of growing embryonic axis during seed germination
(c) central region of style through which the pollen tube grows towards the ovary
(d) endodermis of roots facilitating rapid transport of water from cortex to pericycle.
Answer.D

Question. For a critical study of secondary growth in plants,which one of the following pairs is suitable?
(a) Teak and pine
(b) Deodar and fern
(c) Wheat and maiden hair fern
(d) Sugarcane and sunflower 
Answer.A

Question. A common structural feature of vessel elements and sieve tube elements is
(a) enucleate condition
(b) thick secondary walls
(c) pores on lateral walls
(d) presence of Pprotein.
Answer.A

Question. In a woody dicotyledonous tree, which of the following parts will mainly consist of primary tissues?
(a) All parts
(b) Stem and root
(c) Flowers, fruits and leaves
(d) Shoot tips and root tips
Answer.C

Question. In a longitudinal section of a root, starting from the tip upward, the four zones occur in the following order:
(a) root cap, cell division, cell enlargement, cell maturation
(b) root cap, cell division, cell maturation, cell enlargement
(c) cell division, cell enlargement, cell maturation, root cap
(d) cell division, cell maturation, cell enlargement, root cap 
Answer.A

Question. The apical meristem of the root is present
(a) only in radicals
(b) only in tap roots
(c) only in adventitious roots
(d) in all the roots. 
Answer.D

Question. In which one of the following is nitrogen not a constituent ?
(a) Idioblast
(b) Bacteriochlorophyll
(c) Invertase
(d) Pepsin 
Answer.A

Question. Collenchyma occurs is
(a) herbaceous climbers
(b) woody climbers
(c) climbing stems
(d) water plants. 
Answer.C

Question. Collenchyma occurs in the stem and petioles of
(a) xerophytes
(b) monocots
(c) dicot herbs
(d) hydrophytes.
Answer.C

Question. Monocot leaves possess
(a) intercalary meristem
(b) lateral meristem
(c) apical meristem
(d) mass meristem. 
Answer.A

Question. Cork cambium and vascular cambium are
(a) parts of secondary xylem and phloem
(b) parts of pericycle
(c) lateral meristem
(d) apical meristem.
Answer.C

Question. Out of diffuse porous and ring porous woods, which is correct?
(a) Ring porous wood carries more water for short period.
(b) Diffuse porous wood carries more water.
(c) Ring porous wood carries more water when need is higher.
(d) Diffuse porous wood is less specialised but conducts water rapidly throughout.
Answer.C

Question. Sieve tubes are suited for translocation of food because they possess
(a) bordered pits
(b) no ends walls
(c) broader lumen and perforated cross walls
(d) no protoplasm. 
Answer.C

Question. Death of protoplasm is a prerequisite for a vital function like
(a) transport of sap
(b) transport of food
(c) absorption of water
(d) gaseous exchange. 
Answer.A

Question. Organisation of stem apex into corpus and tunica is determined mainly by
(a) planes of cell division
(b) regions of meristematic activity
(c) rate of cell growth
(d) rate of shoot tip growth. 
Answer.A

Question. Pith and cortex do not differentiate in
(a) monocot stem
(b) dicot stem
(c) monocot root
(d) dicot root.
Answer.A

Question. Cork is formed from
(a) cork cambium (phellogen)
(b) vascular cambium
(c) phloem
(d) xylem. 
Answer.A

Question. Which meristem helps in increasing girth?
(a) Lateral meristem
(b) Intercalary meristem
(c) Primary meristem
(d) Apical meristem 
Answer.A

Question. Tunica corpus theory is connected with
(a) root apex
(b) root cap
(c) shoot apex
(d) secondary growth.
Answer.C

Morfe Questions

1 Name the two types of sclerenchyma.

2 What are trichomes? Write their function.

3 List the three tissue systems in plants.

4 What are bulliform cells? Write their function.

5 Differentiate between
a) Exarch and endarch
b) Protoxylem and metaxylem

6 Differentiate the following:
1. Spring wood and autumn wood
2. Heartwood and sapwood.

7 Give two differences between gymnosperms and angiosperms with respect to complex tissues.

8 What are lenticels? Write their function.

9 Point out the differences between the structure of a monocot and dicot leaf.

10 Design a flow chart showing different types of plant tissues.

11 Name the complex tissues and mention their component elements and their function.

12 Explain the anatomy of dicot root.

13 Describe the structure of a dicot stem.

14 What is periderm? How does the periderm formation take place in the dicot stem?

15 Make a table showing occurrence, structure and function of different types of simple tissues.

16 List the anatomical differences between dicot stem and monocot stem.

17 With the help of schematic diagrams,explain the process of secondary growth in the stems of woody angiosperms. write its significance?

18 Describe the secondary growth in roots.