251. The most likely deficient nutrient is:
Answer: B. nitrogen
Biology Class 11 Unit 9: Diversity in Plant Functions MCQs
278 multiple choice questions with the correct answer for each. Tap an option to check yourself, or switch on "Show all answers". This is page 6 of 6.
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252. The yellowing is called:
Answer: B. chlorosis
253. A good solution for the farmer is:
Answer: B. crop rotation or adding fertilizers
254. Nitrogen is needed for synthesis of:
Answer: B. proteins, nucleic acids and chlorophyll
255. In A the cell will become:
Answer: B. turgid, since water enters
256. In B the cell:
Answer: C. has no net movement of water
257. In C the cell will:
Answer: B. lose water by exosmosis and become flaccid
258. Solution C is:
Answer: C. hypertonic
259. The main force which pulls water up is:
Answer: B. transpiration pull
260. The continuity of the water column is due to:
Answer: B. cohesion and adhesion
261. The tissue that carries this water is:
Answer: B. xylem
262. The cells forming pipelines only in angiosperms are:
Answer: B. vessel elements
263. The leaf here acts as a:
Answer: B. source
264. The root acts as a:
Answer: B. sink
265. Loading of sugar into sieve tubes is done by:
Answer: B. companion cells with ATP
266. The process is explained by the:
Answer: B. pressure flow theory
267. The bands are called:
Answer: B. annual (growth) rings
268. The age of the tree is about:
Answer: B. 12 years
269. The light-coloured wide bands are formed in:
Answer: B. spring and summer
270. The tissue producing secondary xylem is the:
Answer: B. vascular cambium
271. Cocklebur is a:
Answer: B. short-day plant
272. Spinach is a:
Answer: B. long-day plant
273. The red flash prevented flowering by converting:
Answer: B. Pr to Pfr
274. Flowering could be restored by following the red flash with:
Answer: C. far-red light
275. This treatment is called:
Answer: B. vernalization
276. The treatment is received by the:
Answer: B. shoot apex or embryo
277. The hormone actually involved is:
Answer: B. gibberellin
278. Winter wheat is a:
Answer: B. biennial
About Biology Class 11 Unit 9 MCQs (Federal Board)
These 278 Biology MCQs cover Class 11 Unit 9: Diversity in Plant Functions of the Federal Board (FBISE) HSSC-I (1st Year / Class 11) syllabus. They are SLO-based MCQs as per the new pattern for FBISE exams. Each question has four options and the correct answer is shown, so you can practise for the annual examination and find the topics you still need to revise. The questions are split over 6 pages of 50. Use the Print button to save this chapter as a PDF.