NCERT CLASS 11 | TOPIC : ANATOMY OF FLOWERING PLANTS | ARQB | NEET BIOLOGY ONLINE TEST

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NCERT CLASS 11 | TOPIC : ANATOMY OF FLOWERING PLANTS | ARQB | NEET BIOLOGY ONLINE TEST

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It contains 35 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 ➤ 183. Assertion: All tissues lying inside vascular cambium are called as bark.

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Reason: Bark is made up of phellogen, phellem and phelloderm lying inside secondary phloem.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

2 ➤ 184. Assertion: Stomata are absent in submerged hydrophytes.

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Reason: Respiration occurs by means of air chambers in submerged plants.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

3 ➤ 185. Assertion: Cambium is a lateral meristem and cause growth in width.

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Reason: Cambium is made up of fusiform and ray initials in stem.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

4 ➤ 186. Assertion: Higher plants have meristematic regions for indefinite growth.

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Reason: Higher plants have root and shoot apices.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

5 ➤ 187. Assertion: In collateral vascular bundles, the phloem is situated towards inner side.

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Reason: In monocot stem, cambium is present.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

6 ➤ 188. Assertion: Thick cuticle is mostly present in disease resistant plants.

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Reason: Disease causing agents cannot grow on cuticle and cannot invade the cuticle.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

7 ➤ 189. Assertion: Quiescent centre is found in the centre of the root apex.

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Reason: It consists of actively dividing cells.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

8 ➤ 190. Assertion: Permanent tissue is composed of mature cells.

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Reason: Meristematic tissue is a group of actively dividing cells

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

9 ➤ 191. Assertion: Intercalary meristem increases the length of plant like apical meristems.

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Reason: Intercalary meristem originates from the apical meristems.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

10 ➤ 192. Assertion: The lenticel is meant for gaseous exchange.

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Reason: Lenticel checks for excessive evaporation of water.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

11 ➤ 193. Assertion: Xerophytic leaves may contain stomatal crypts or sunken stomata.

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Reason: Spongy parenchyma is more in xerophytic leaves.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

12 ➤ 194. Assertion: Isobilateral leaves are amphistomatic.

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Reason: Mesophyll is not differentiated into palisade and spongy.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

13 ➤ 195. Assertion: Trichomes helps in preventing water loss due to transpiration.

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Reason: On the stem, the epidermal hairs are called trichomes.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

14 ➤ 196. Assertion: Growth rings are also called as annual rings.

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Reason: Generally the growth ring is formed in each year.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

15 ➤ 197. Assertion: Heartwood is more durable than the sapwood.

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Reason: Heartwood contains organic compound like tannins, resins, oil, gumsaromatic substances and essential oils make it hard and more durable.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

16 ➤ 198. Assertion: Sugarcane shows Kranz anatomy.

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Reason: In diocot leaves, the bundle sheath cells lack chloroplasts.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

17 ➤ 199. Assertion: Tracheids are dead cells.

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Reason: Tracheids have lignified cell wall.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

18 ➤ 200. Assertion: Xylem provides mechanical strength to plant parts.

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Reason: Xylem conducts water and mineral from root to stems and leaves.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

19 ➤ 201. Assertion: Stomata regulate the process of transpiration and gaseous exchange

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Reason: Stomata are present in the cortex of stem

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

20 ➤ 202. Assertion: Secondary growth won’t occur in monocot stem.

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Reason: Vascular bundles are closed in monocot stem.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

21 ➤ 203. Assertion: Vessels become dead at maturity

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Reason: Initially cell possesses living protoplasm but due to lignin deposition in wall along with other thickening material they become dead.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

22 ➤ 204. Assertion: Cork cambium and vascular cambium are lateral meristem.

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Reason: Both are involved in secondary growth of plant by addition of cells in lateral direction of main axis.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

23 ➤ 205. Assertion: Intrafascicular cambium is primary lateral meristem.

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Reason: It is found in lateral side of plant main axis and derived from meristem of embryo.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

24 ➤ 206. Assertion: Aerenchyma found in aquatic plant.

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Reason: It contains air cavities and provides buoyancy to aquatic plant.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

25 ➤ 207. Assertion: Collenchyma provides mechanical strength as well as elasticity.

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Reason: Wall thickening in collenchymas is not uniform.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

26 ➤ 208. Assertion: Apical and intercalary meristems are primary meristem. Reason: Both appear early in life and contribute to the formation of primary plant body.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

27 ➤ 209. Assertion: Lateral meristems are generally referred as secondary meristem.

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Reason: These are responsible for production of secondary tissue.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

28 ➤ 210. Assertion: Parenchyma is simple tissue

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Reason: It is made of only one type of cell.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

29 ➤ 211. Assertion: Xylem is complex tissue

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Reason: Xylem is made up of more than one type of cells

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

30 ➤ 212. Assertion: Sieve tube member and companion cells are called sister cells

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Reason: Both derived from same mother cells and death of one results in death of other as well.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

31 ➤ 213. Assertion: Function of sieve tubes is controlled by nucleus of companion cells.

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Reason: Companion cells help in maintaining the pressure gradient in sieve tubes.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

32 ➤ 214. Assertion: Cuticle prevent loss of water from epidermis

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Reason: Cuticle is made up of waxy thick layer and cover epidermis

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

33 ➤ 215. Assertion: Vascular bundle of dicot stem said to be open

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Reason: Such vascular bundle contain cambium which possess ability to form secondary xylem and phloem tissue

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

34 ➤ 216. Assertion: In dicot stem endodermis is referred as starch sheath

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Reason: Cells of endodermis are rich in starch grains.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

35 ➤ 217. Assertion: Bulliform cells in grasses use to minimise water loss under water stem condition.

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Reason: They are flaccid due to water stress and make the leaf curl inside thus minimise surface area for transpiration.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion . (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

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