300+ TOP MCQs on Parts Of Plants and Answers

NEET Biology is the vey important paper in the medical entrance exam. Here, you will discover the NEET Biology MCQs and Answers for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Biology objective questions on air pollution . NEET Biology Parts Of Plants Multiple Choice Questions

MCQs on Parts Of Plants :

1. Which of the following factors promotes the opening of the stomatal aperture?
(a) A decrease in guard cell turgidity
(b) When the outer walls of the guard cells contracts
(c) Radial orientation of the cellulose microfibrils in the cell wall of the guard cells
(d) The longitudinal orientation of the cellulose microfibrils in the cell wall of guard cells

Answer

Answer: (c)

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

Answer

Answer: (b)

3. Which of the following statement are true about the Tyloses – the balloon-shaped structures?
(a) Characterise the sapwood
(b) Original in the lumen of vessels
(c) Are linked to the ascent sap through xylem vessels
(d) Are extensions of the xylem parenchyma cells into vessels

Answer

Answer: (d)

4. Which of the following events takes place in a ring girdled plant?
(a)  The eath of the root first
(b) The death of the shoot first
(a) The shoots and the root dies first
(d) Neither the shoot nor the root will die

Answer

Answer: (c)

5. This is one of the most recent and valid explanations for stomatal movements.
(a) Starch hydrolysis
(b) Transpiration
(c) Guard cell photosynthesis
(d) Potassium efflux and the influx

Answer

Answer: (d)

6Which of the following are the primary water-conducting elements of xylem in gymnosperms?
(a) Fibres
(b) Vessels
(c) Tracheids
(d) Transfusion tissue

Answer

Answer: (c)

7. Which of the following is not a lateral meristem?
(a) Phellogen
(b) Cork cambium
(c) Intercalary meristem
(d) Interfascicular cambium

Answer

Answer: (c)

8. In monocots, grafting is not possible as _________
(a) They show parallel venation
(b) they have scattered vascular bundles
(c) they lack cambium
(d) they are herbaceous

Answer

Answer: (c)

9. Vascular bundles are closed in monocots as:
(a) presence of vascular cambium between xylem and phloem
(b) presence of xylem and phloem
(c) absence of vascular cambium
(d) xylem and phloem occur in separate bundles

Answer

Answer: (c)

10. Difference between heartwood and sapwood is that heartwood
(a) shows the presence of fibres and rays
(b) has dead and non-conducting elements
(c) lacks parenchyma and vessels
(d) is susceptible to pathogens and pests

Answer

Answer: (b)

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