NCERT CLASS 11 | TOPIC : ANATOMY OF FLOWERING PLANTS - SECONDARY GROWTH | QB | NEET BIOLOGY ONLINE TEST

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NCERT CLASS 11 | TOPIC : ANATOMY OF FLOWERING PLANTS - SECONDARY GROWTH | QB | NEET BIOLOGY ONLINE TEST

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It contains 77 important questions. Choose the most correct answer. Then check your answer. Try again if there are errors. Regards : kalvisolai.net

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1 ➤ 106. The growth of the roots and stems in length with the help of apical meristem is called

(a) Secondary growth (b) Primary growth (c) Both (a) and (b) (d) None of these

2 ➤ 107. Dicot plant exhibits an increase in girth. It is an example of

(a) Secondary growth (b) Primary growth (c) Both (a) and (b) (d) None of these

3 ➤ 108. Cells of cambium present between primary xylem and primary phloem forms

(a) Interfascicular cambium (b) Intrafascicular cambium (fascicular cambium) (c) Cork cambium (d) None of these

4 ➤ 109. Vascular cambium is formed by

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I. Interfascicular cambium

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II. Intrafascicular cambium.

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III. Cork cambium

(a) I and III only (b) II and III only (c) I, II and III only (d) I and II only

5 ➤ 110. Cambium wing forms cells towards

(a) Inner side of ring (b) Outer side of ring (c) Both side of ring (d) They do not form cells

6 ➤ 111. The vascular cambium activity is

(a) More on inner side than outer (b) More on outer side than inner (c) Equal on outer and inner side (d) None of these

7 ➤ 112. The following will not happen during secondary growth by cambium ring:

(a) Secondary xylem produced is more than secondary phloem. (b) Primary and secondary phloem is crushed due to continued formation and accumulation of secondary xylem. (c) Primary xylem remains more or less intact in or around centre. (d) The cells cut off towards pith mature into secondary phloem and cells cut off towards periphery mature into secondary xylem.

8 ➤ 113. During secondary growth all occur except

(a) Secondary medullar rays forms (b) Phloem crushed (c) Primary phloem forms (d) Secondary xylem forms

9 ➤ 114. The activity of cambium is under control of

(a) Physiological factor (b) Environmental factor (c) Both (a) and (b) (d) None

10 ➤ 115. Select the total number of correct statements from the following:

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(1) In spring season cambium is active and produces a large number of xylary elements having vessels with wider lumen.

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(2) The spring wood is also known as early wood.

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(3) In winter, the cambium is less active and forms few xylary elements having narrow vessels this is called autumn wood or late wood.

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(4) The spring wood is lighter in colour and has lower density.

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(5) Autumn wood is darker and has higher density. (6) Annual ring (autumn wood and spring wood) used to estimate the age of plant.

(a) 3 (b) 4 (c) 5 (d) 6

11 ➤ 116. In older trees, the greater part of secondary xylem is dark brown due to the deposition of

(a) Tannins and resins (b) Oil and gums (c) Aromatic substance and essential oil (d) All of these

12 ➤ 117. The dark brown deposition of organic compound in heartwood will make it

(a) Hard (b) Durable (c) Resistant to microbes and pest (d) All of these

13 ➤ 118. Heartwood contains

(a) Live lignified element (b) Dead highly lignified element (c) Live non-lignified element (d) Dead non-lignified elements

14 ➤ 119. The function of heartwood is

(a) Conduction of water (b) Conduction of mineral (c) Conduction of food (d) Mechanical support

15 ➤ 120. Peripheral region of secondary xylem, which is light in color is known as

(a) Heartwood (duramen) (b) Sapwood (alburnum) (c) Spring wood (d) Autumn wood

16 ➤ 121. The cells of secondary cortex are

(a) Parenchymatous (b) Sclerenchymatous (c) Collenchymatous (d) Meristems

17 ➤ 122. Bark refers to

(a) Periderm (b) Secondary phloem (c) Both (a) and (b) (d) None of these

18 ➤ 123. At certain region, the phellogen cuts off closely arranged parenchymatous cells on the outer side instead of cork cells. These parenchymatous cells soon rupture epidermis, forming a lensshaped opening called

(a) Hydathodes (b) Stomata (c) Lenticels (d) None of these

19 ➤ 124. Which of the following is correct about lenticels?

(a) It is present in most of the woody trees (b) It helps in gaseous exchange (c) It is formed by the activity of phellogen (d) All of these

20 ➤ 125. In dicot root, the vascular cambium is

(a) Completely primary in origin (b) Partly primary and partly secondary (c) Completely secondary in origin (d) None of these

21 ➤ 126. Initially formed cambium in dicot root is

(a) Circular (b) Rectangular (c) Oval (d) Wavy

22 ➤ 127. Secondary growth occur in

(a) Dicot root (b) Dicot stem (c) Stem and root of gymnosperm (d) All of these

23 ➤ 128. Which of the following is incorrect?

(a) Wood is actually a secondary xylem. (b) Different type of woods are found on basis of their composition and time of production. (c) Monocot and dicot show marked variation in their internal structure. (d) Increase in girth of dicot stem by vascular cambium only.

24 ➤ 129. Main functions of plant tissues are

(a) Assimilation of food and its storage (b) Transportation of water, mineral and photosynthates (c) Mechanical support (d) All of these

25 ➤ 130. Cambium causes growth in

(a) Circumference (b) Width (diameter) (c) Leaves (d) Length

26 ➤ 131. The function of cork cambium (phellogen) is to produce

(a) Cork and secondary cortex (b) Secondary xylem and secondary phloem (c) Cork (d) Secondary cortex and phloem

27 ➤ 132. Other names of secondary cortex, cork cambium and cork are

(a) Phellem, phelloderm and phellogen (b) Phellogen, phellem and phelloderm (c) Phelloderm, phellogen and phellem (d) Phellogen, phelloderm and phellem

28 ➤ 133. In dicot roots, the vascular cambium is derived from

(a) Epidermis (b) Hypodermis (c) Cortex (d) Pericycle

29 ➤ 134. Periderm is made up of

(a) Phellem (b) Phellogen (c) Phelloderm (d) All of these

30 ➤ 135. Cork cells are

(a) Dead (b) Photosynthetic (c) Elongated and participates in movement (d) Meristematic

31 ➤ 136. Annual rings are distinct in plants growing in

(a) Tropical regions (b) Arctic region (c) Grasslands (d) Temperate region

32 ➤ 137. Xylem, which is functional in a dicot tree is

(a) Spring wood (b) Sap wood (c) Autumn wood (d) Heart wood

33 ➤ 138. External protective tissues of plants (of dicot stem are)

(a) Cork and pericycle (b) Cortex and epidermis (c) Pericycle and cortex (d) Epidermis and cork

34 ➤ 139. Cork cambium is a

(a) Secondary meristem (b) Apical meristem (c) Intercalary meristem (d) Primary meristem

35 ➤ 140. Cambium, which produces cork is known as

(a) Phelloderm (b) Phellogen (c) Periblem (d) Periderm

36 ➤ 141. Dendrochronology is the study of

(a) Height of a tree (b) Diameter of a tree (c) Age of a tree by counting the number of annual rings in the main stem (d) None of these

37 ➤ 142. The tissue made up of thin-walled rectangular cells responsible for the secondary growth is

(a) Cortex (b) Xylem (c) Cambium (d) Pith

38 ➤ 143. In old dicot stems, a major part of the wood is filled up with tannins, resins, gums, etc. This part of wood is called

(a) Hard wood (b) Heart wood (c) Sap wood (d) Soft wood

39 ➤ 144. Lenticel develops through the activity of

(a) Vascular cambium (b) Dermatogens (c) Phellogen (d) Intercalary meristem

40 ➤ 145. The waxy substance associated with cell walls of cork cells are impervious to water because of the presence of _________, which gets deposited on cork cells

(a) Cutin (b) Suberin (c) Lignin (d) Hemicellulose

41 ➤ 146. Growth rings determines the

(a) Age (b) Length (c) Breadth (d) Number of branches of a plant

42 ➤ 147. Lenticels are formed in bark, which are

(a) Aerating pores (b) Made up of phloem (c) Made up of xylem (d) Found in monocot plants

43 ➤ 148. Heart wood or duramen is the

(a) Outer region of secondary xylem (b) Inner region of secondary xylem (c) Outer region of secondary phloem (d) Inner region of secondary phloem

44 ➤ 149. The bark of tree comprises of

(a) All the tissues outside the vascular cambium (b) All the tissues outside the cork cambium (c) Only the cork (d) The cork and secondary cortex

45 ➤ 150. The layer of cells between endodermis and vascular bundles is called

(a) Epidermis (b) Pericycle (c) Hypodermis (d) Pith

46 ➤ 151. Bulliform or motor cells are present in

(a) Dicot stem (b) Upper epidermis of dicot leaves (c) Lower epidermis of monocot leaves (d) Upper epidermis of monocot leaves

47 ➤ 152. Exarch and polyarch vascular bundles occur in

(a) Monocot stem (b) Monocot root (c) Dicot stem (d) Dicot root

48 ➤ 153. In root, the xylem is

(a) Mesarch (b) Exarch (c) Placed at different places in different plants (d) Endarch

49 ➤ 154. In monocot leaf

(a) Bulliform cells are absent from the epidermis (b) Veins form a network (c) Mesophyll is well differentiated into these parts (d) Mesophyll is not differentiated into palisade and spongy parenchyma

50 ➤ 155. In dicot root

(a) Vascular bundles are scattered and with cambium (b) Vascular bundles are arranged in a ring and have cambium (c) Xylem and phloem are radially arranged (d) Xylem is always endarch

51 ➤ 156. Well-developed pith is found in

(a) Monocot stem and dicot root (b) Monocot and dicot stems (c) Dicot stem and dicot root (d) Dicot stem and monocot root

52 ➤ 157. The correct situation of mesophyll in isobilateral grass leaf is shown by

(a) Palisade towards adaxial surface (b) Palisade towards abaxial surface (c) Undifferentiated mesophyll (d) Palisade along both the surface

53 ➤ 158. Monocot root differs from dicot root in having

(a) Open vascular bundles (b) Scattered vascular bundles (c) Well-developed pith (d) Radially arranged vascular bundles

54 ➤ 159. Vascular bundles are scattered in

(a) Bryophytes (b) Dicot root (c) Dicot stem (d) Monocot stem

55 ➤ 160. Generally hypodermis in monocots is composed of

(a) Parenchyma (b) Sclerenchyma (c) Collenchymas (d) Chlorenchyma

56 ➤ 161. The polyarch condition is seen in

(a) Monocot stem (b) Monocot root (c) Dicot root (d) Dicot stem

57 ➤ 162. Which of the following is not a characteristic feature of the anatomy of dicotyledonous root?

(a) Radial vascular bundles (b) Secondary growth (c) Pith is little or absent (d) Conjoint collateral

58 ➤ 163. Endodermis of dicot stem is also called

(a) Bundle sheath (b) Starch sheath (c) Mesophyll (d) Pith

59 ➤ 164. The cell layer located at the periphery in the cross-section of the root is called

(a) Endodermis (b) Epiblema (c) Pericycle (d) Xylem

60 ➤ 165. Exarch xylem is found in

(a) Root (b) Stem (c) Leaf (d) Rachis

61 ➤ 166. Two to four xylem bundle are found in (

a) Monocot root (b) Monocot stem (c) Dicot stem (d) Dicot root

62 ➤ 167. Collenchymatous hypodermis is characteristics of

(a) Dicot stem (b) Monocot stem (c) Monocot as well as dicot stem (d) Hydrophytes

63 ➤ 168. Vascular bundles in dicot stem are

(a) Conjoint and collateral (b) Conjoint and closed (c) Conjoint, collateral and open (d) Collateral and open

64 ➤ 169. Cortex and pith are not distinguished in

(a) Dicot stem (b) Monocot stem (c) Dicot root (d) Monocot root

65 ➤ 170. In a dorsiventral leaf, the location of palisade tissue and phloem are known as

(a) Abaxial and abaxial (b) Adaxial and abaxial (c) Adaxial and adaxial (d) Abaxial and adaxial

66 ➤ 171. Which of the following is seen in a monocot root?

a) Large pith (b) Vascular cambium (c) Endarch xylem (d) Medullary ray

67 ➤ 172. With respect to which factor, the pericycle of a root differs from that of the stem?

(a) Sclerenchymatous in root and collenchymatous in stem. (b) Collenchymatous in root and parenchymatous in stem. (c) Parenchymatous in root and sclerenchymatous in stem. (d) Parenchymatous in root and collenchymatous in stem.

68 ➤ 173. Collenchyma generally occurs

(a) In scattered dicot roots (b) In a ring in monocot roots (c) In patches under epidermis in dicot stem (d) All the above

69 ➤ 174. Phloem parenchyma is absent in

(a) Dicot root (b) Dicot leaf (c) Monocot stem (d) Dicot stem

70 ➤ 175. Collenchyma tissue is present in

(a) Dicot stem (b) Monocot stem (c) Dicot root (d) Flowers

71 ➤ 176. The vascular bundles in the stem of monocots are typically

(a) Collateral (b) Bicollateral (c) Concentric (d) Radial

72 ➤ 177. Sclerenchymatous sheath is present in vascular bundles of

(a) Monocot root (b) Dicot root (c) Dicot stem (d) Monocot stem

73 ➤ 178. In monocot roots which types of vascular bundles are found?

(a) Collateral, conjoint and closed (b) Radial vascular bundle with exarch xylem (c) Bicollateral, conjoint and closed (d) Radial vascular bundle with endarch xylem

74 ➤ 179. Lateral roots arise from

(a) Pericycle (b) Pith (c) Stem (d) Root

75 ➤ 180. In dicot roots, the cells of which region show casparian strips?

(a) Cambium (b) Endodermis (c) Pericycle (d) Hypodermis

76 ➤ 181. In the diagram of T.S. of Stele of Dicot Root, the different parts have been indicated by alphabets. Choose the answer in which these alphabets correctly match with the parts they indicate.

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(a) A – Endodermis, B – Conjunctive tissue, C – Metaxylem, D – Protoxylem, E – Phloem, F – Pith (b) A – Endodermis, B – Pith, C – Protoxylem, D – Metaxylem, E – Protoxylem, F – Conjuctive tissue (c) A – Pericycle, B – Conjuctive tissue, C – Metaxylem, D – Protoxylem, F – Endodermis (d) A – Endodermis, B – Conjuctive tissue, C – Protoxylem, D – Metaxylem, E – Phloem, F – Pith

77 ➤ 182. In grasses,

(a) Certain adaxial epidermal cells along the veins modify themselves into large, empty, colourless cells. These are called bulliform cells. (b) When the bulliform cells in the leaves absorb water and are turgid, the leaf surface is exposed. (c) When bulliform cells are flaccid due to water stress, they make the leaves curl inwards to minimize the water loss. (d) All are correct

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