Showing posts with label #Anatomy of Flowering Plants Class XI. Show all posts
Showing posts with label #Anatomy of Flowering Plants Class XI. Show all posts

Monday, March 25, 2024

6. Anatomy of Flowering Plants Class XI

1.The apical meristem of the root is present.

(a) Only in the radical

(b) Only in adventitious root.

(c) Only in tap roots

(d) In all the roots

Answer

Ans.(d)


2. Vascular tissue in flowering plants develops from.

(a) Periblem

(b) Phellogen

(c) Dermatogen

(d) pleorome.

Answer

Ans.(d)


3. Palisade parenchyma is absent in leaves of ..

(a) Mustard

(b) Gram

(c) Syabean

(d) Sorghum.

Answer

Ans.(d)


4. Casparian strips are the characterstics of ..

(a) Cortex

(b) Endodermis

(c) Pericycle

(d) Pith

Answer

Ans.(b)


5. Root cap is formed by…

(a) Dermatogen

(b) Vascular cambium

(c) Calyptrogen

(d) Wound cambium.

Answer

Ans.(c)


6. Lenticels and hydathodes are small pores with which of the the common attributes ?

(a) They are always closed

(b) They allow exchange of gases.

(c) Their opening and closing are not regulated

(d) They are found on the same organ of plant.

Answer

Ans.(b)


7. The functions of vessel is ..

(a) To provide mechanical streant

(b) Conduction of water and minerals

(c) Conduction of food only

(d) All of these .

Answer

Ans.(b)


8. Cambium is ..

(a ) Lateral meristem

(b) Intercalary meristem.

(c) Primary meristem

(d ) Nome of above.

Answer

Ans.(c)


9. Cork cell contains…

(a) Suberin.

(b)Cutin

(c) Lignin

(d) Pectin

Answer

Ans.(a)


10. Root branches arise from .

(a) Pericycle

(b) Endodermis

(c) Cortex

(d ) Epidermis.

Answer

Ans.(a)


11. Procambium forms..

(a)cork cambium

(b) vascular tissue

(C) vascular cambium

(d) intercalary meristem

Answer

Ans.(b)


12. Another name of phellogen is

(a)cork

(b) phelloderm

(c) cork cells

(d) cork cambium

Answer

Ans.(d)


13. The stem of submerged hyrophytes is soft & weak due to

(a) absence of xylem

(b) absence of stomatals

(c)absence of phloem

(d) reduced mechanical tissue & xylem

Answer

Ans.(d)


14. which of the following is enucleated?

(a) vessels

(b) sieve cells

(c)compound cells

(d) tracheids

Answer

Ans.(b)


15. Functional xylem in dicot stem is:

(a) spring wood

(b) autumn wood

(c) heart wood

(d) sap wood

Answer

Ans.(d)


16. Wood is common name of

(a)Cambium

(b) vascular bundles

(c) phloem

(d)secondary xylem

Answer

Ans.(d)


17.Evergreen trees remains greenthroughout the year on account of

(a)absence of leaf fall

(b) cold climate

(c) supply of moisture throughout the year

(d) leaves falling in small no. at regular intervals.

Answer

Ans.(c)


18. Sap wood is synomymous with

(a) bark

(b) periderm

(c) outer layer of secondary xylem

(d) inner layer of secondary xylem

Answer

Ans.(c)


19. The waxy substance associated with the wall of cork cell is…

(a) cutin

(b) suberin

(c) lignin

(d) hemicellulose

Answer

Ans.(b)


20. Which of the following tissue originate from ray initials of cambium?

(a)tracheids & vessels

(b) sieve tubes & companion cells

(c) xylem & phloem fibres

(d) vascular rays

Answer

Ans.(d)


21. Abnormal secondary growth is found in..

(a) dracaena & yucca

(b) triticum

(c) helianthus

(d) cucurbita

Answer

Ans.(a)


22. Diffuse porous woods are characteristic of plant growing in

(a) alpine region

(b) cold winter region

(c) temperate climate

(d) tropics

Answer

Ans.(c)


23. The healing of wounds in plants takes place by activity of

(a)apical meristem

(b) lateral meristem

(c) secondary meristem

(d)intercalary meristem

Answer

Ans.(c)


24. The process of conversion of meristamatic tissue to permanent cell is….

(a) dedifferention

(b) undifferentation

(c) differentiation

(d) none of these.

Answer

Ans.(c)


25. which is livimg mechanical tissue

(a) phloem

(b) parenchyma

(c) collenchyma

(d) sclerenchyma.

Answer

Ans.(c)


26. Cambium activity is highest in ..

(a) spring

(b) winter

(c) atumn

(d) rainy

Answer

Ans.(a)


27. Which of the following cells are selcreatory as well as excreatory in function?

(a)oil glands of plants

(b)latex cells

(c) sudoriferous cells

(d) none of these.

Answer

Ans.(b)


28. sieve tube is…

(a) enucleated

(b) dead cells

(c) multinucleated

(d) nucleated.

Answer

Ans.(a)


29. Biocollateral vascular bundle is a charactersistic feature of family..

(a) cucurbitaceae

(b) cruciferae

(c) brassicaceae

(d) solanaceae

Answer

Ans.(a)


30. Exarch primary xylem is a feature of

(a) all leaves

(b) dicot stem

(c) all roots

(d) monocot stems.

Answer

Ans.(c)


31. Duramen is

(a)periderm

(b) bark

(c) sapwood

(d) heartwood

Answer

Ans.(d)


32. Shoot apical meristem is found in the tip of

(a)plumule

(b) radicle

(c) root

(d) apex

Answer

Ans.(d)


33. Piths are formed on the cell wall due to lack of-

(a) cell plate

(b) Primary wall material

(c) Secondary wall material

(d) Middle lamella.

Answer

Ans.(c)


34. Annual ring are found in plants belonging to-

(a) Alpine regions

(b) Temperate area

(c) Tropics

(d) Near sea beaches .

Answer

Ans.(b)


35. Histogen theory was produced by.

(a) Hanstein

(b) Eamu

(c) Esamam

(d) Schmidit.

Answer

Ans.(a)


36. Mesarch xylem is common in.

(a) Ferns

(b)Dicots

(c) Bryophytes

(c) Monocots.

Answer

Ans.(a)


37. Desert grasses often roll their leaves due to presence of—

(a) Oily surface

(b) Bulliform cells

(c) Spines

(d) All of these.

Answer

Ans.(b)


38. Jute is a..

(a) Bast fibre from secondary xylem.

(b) Bast fibres from primary xylem.

(c) Bast fibres from secondary phloem.

(d) Bast fibres from primary phloem.

Answer

Ans.(c)


39. Which among the permanent cells are circular and long even elongated cells ?

(a) Prenchyma

(b)collenchyma

(c) Sclerenchyma

(d) None of these.

Answer

Ans.(c)


40. Stele is made up of –

(a) Vascular bundles

(b) Pericycle

(c) Pith

(d) All of these .

Answer

Ans.(d)


41. Which of the following is the correct statement. ?

(a) Pith is larger in monocot root.

(b) Pith is smaller in dicot root.

(c) Pith is equal in size in both.

(d) Both (a ) and (b).

Answer

Ans.(d)


42. Which of the following is collectively known as periderm ?

(a) Phellogen .

(b) Phellem

(c) Phelloderm

(d) All of these .

Answer

Ans.(d)


43. Wood is common name of

(a)cambium

(b)vascular bundles

(c) phloem

(d) secondary xylem

Answer

Ans.(d)


44. As a tree grows older , which increases rapidly in thickness

(a)its heartwood

(b) its sapwood

(c) its cortex

(d) its phloem

Answer

Ans.(d)


45. In old tissue gaseseous exchange takes place through

(a)stomata

(b) arenchyma

(c) hydathodes

(d)lenticles

Answer

Ans.(d)


46. Cork cambium in a dicot root is derived from

(a) hypodermis

(b)epidermis

(c) pericycle

(d)cortex

Answer

Ans.(c)


47. In hollow hearted plant

(a) root woll die first

(b) shoot will die first

(c)root and shoot will die at same time

(d) neither will die

Answer

Ans.(a)


48. Quinine , imp. in treatment of malaria is exctracted from

(a)bark of cinchona

(b)bark of cinnamon

(c)bark of hevea

(d) fascicular cambium

Answer

Ans.(a)


49. Interfascicular cambium is situated

(a) in between vascular bundles

(b)outside vascular bundles

(c)inside vascular bundles

(d)in pith

Answer

Ans.(c)


50. The cork is an excellent material for making bottle stoppers since it is..

(a) cheap

(b) easily available

(c) air tight

(d) light

Answer

Ans.(c)


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