NCERT Class 11 Chapter 6 Biology Anatomy of Flowering Plants MCQ

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1. Function of companion cells is

A. loading of sucrose into sieve elements

B. providing water to phloem

C. loading of sucrose into sieve elements by passive transport

D. providing energy to sieve elements for active transport

2. The cork cambium, cork and secondary cortex are collectively called

A. periderm

B. phelloderm

C. phellogen

D. phellem

3. Which of the following does not have stomata ?

A. Submerged hydrophytes

B. Mesophytes

C. Hydrophytes

D. None of these

4. The chief water conducting elements of xylem in gymnosperms are :

A. tracheids

B. fibers

C. transfusion tissue

D. None of these

5. Which is correct about transport or conduction of substances?

A. Organic food moves upwardly and downwardly through phloem

B. Inorganic food moves upwardly and downwardly through xylem

C. Organic food moves up through phloem

D. Organic food moves up through phloem

6. A narrow layer of thin walled cells found between phloem/ bark and wood of a dicot is

A. vascular cambium

B. pericycle

C. cork cambium

D. endodermis

7. Which of the following statements is true?

A. Tracheids are unicellular with wide lumen

B. Vessels are unicellular with wide lumen.

C. Tracheids are multicellular with narrow lumen

D. Vessels are multicellular with narrow lumen.

8. The quiescent center in root meristem serves as a

A. reserve for replenishment of damaged cells of the meristem.

B. region for absorption of water

C. reservoir of growth hormones

D. site for storage of food which is utilized during maturation.

9. Root hair arises from

A. epiblema

B. endodermis

C. pericycle

D. cortex

10. Phellogen and phellem respectively denote

A. cork cambium and cork

B. cork and cork cambium

C. secondary cortex and cork

D. cork and secondary cortex

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11. The common bottle cork is a product of

A. Phellogen

B. Vascular cambium

C. Dermatogen

D. Xylem

12. A vascular bundle in which the protoxylem is pointing to the periphery is called

A. exarch

B. closed

C. endarch

D. radial

13. Which of the following does not have stomata?

A. Submerged hydrophytes

B. Xerophytes

C. Mesophytes

D. Hydrophytes

14. Collenchyma differs from parenchyma in having

A. pectin deposits at corners

B. vacuoles

C. cellulose walls

D. living protoplasm

15. Which of the following plant shows multiple epidermis?

A. Nerium

B. Croton

C. Allium

D. Cucurbita

16. Epidermis is absent in

A. root tip and shoot tip

B. ovule and seed

C. shoot bud and floral bud

D. petiole and pedice

17. Which of the following layer is present nearest of plasma membrane in plant cell?

A. Tonoplast

B. Middle lamella

C. Secondary wall

D. Primary wall

18. In land plants, the guard cells differ from other epidermal cells in having

A. chloroplasts

B. mitochondria

C. cytoskeleton

D. endoplasmic reticulum

19. In endarch condition of xylem, protoxylem lies ______ of metaxylem.

A. on inner side

B. on outer side

C. both on inner and outer side

D. in centre

20. Y-shaped arrangement of xylem vessels is found in

A. monocot stem

B. monocot root

C. Both

D. None of these

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21. 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 specialized but conducts water rapidly through out

22. Organization 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

23. For union between stock and scion in grafting which one is the first to occur?

A. Formation of callus

B. Production of plasmodesmata

C. Differentiation of new vascular tissues

D. Regeneration of cortex and epidermis

24. Collenchyma occurs in the stem and petioles of

A. xerophytes

B. monocots

C. dicot herbs

D. hydrophytes

25. What is true about a monocot leaf?

A. Reticulate venation

B. Absence of bulliform cells from the epidermis

C. Mesophyll not differentiated into palisade and spongy tissues

D. Well differentiated mesophyll