Sunday, March 24, 2024

5. Morphology of Flowering Plants Class XI

1. Which of the following plants bear hygroscopic roots?

(a) Bryophyllum

(b) Cuscuta

(c) Vanda

(d) Rhizophora

Answer

Ans.(c)


2. In which of thefollowing, the plants are all roots?

(a) Podostemon

(b) Lemna

(c) Wolffia

(d) Utricularia

Answer

Ans.(a)


3. The region of root hair in a root lies just behind:

(a) Region of maturation

(b) region of elongation

(c) meristematic region

(d) region of root cap

Answer

Ans.(b)


4. In one of the following the stem performs the function of storage and perennation:

(a) Ginger

(b) wheat

(c) radish

(d) ground nut

Answer

Ans.(a)


5. Lack of which element has made some plants insectivorous:

(a) Iron

(b) Magnesium

(c) Nitrogen

(d) sodium

Answer

Ans.(c)


6. Velamen absorbs moisture from :

(a) Air

(b) root

(c) Leaves

(d) Mineral salts

Answer

Ans.(a)


7. Leaves are changed into spines in xerophytic structures called:

(a) Phyllode

(b) cladode

(c) phylloclade

(d) all the above

Answer

Ans.(c)


8. Match the type of fruits listed in Column I with the examples listed in Column II. Choose the correct combination.

Column I                          Column II

Capsule                              (p) paddy

Berry                                  (q) mango

Drupe                                 (r) sunflower

cypsela                              (s) tomato

(a) a-t,b-s,c-q,d-r

(b) a-t,b-r,c-p,d-q

(c )a-s,b-t,c-q,d-r

(d)a-p,b-q,c-r,d-t

Answer

Ans.(a)


9. In guava ,cucurbits flowers are:

(a) hypogynous flower

(b)epigynous flower

(c) perigynous

(d) both (a) and (c)

Answer

Ans.(b)


10. Seed coat is not thin, membranous in :

(a) coconut

(b) ground nut

(c) gram

(d) maize

Answer

Ans.(a)


11. What is the characteristic of haustorial roots of Cuscuta?

(a) Presence of both xylem and phloem

(b) Presence of only xylem © Presence of phloem

(d) Absence of both xylem and phloem

Answer

Ans.(a)


12. Which part of the flower is highly modified stem?

(a) Androecium

(b) thalamus

(c) gynoecium

(d) sepal

Answer

Ans.(b)


13. Which plant lives in nitrogen deficient soil?

(a) Neottia

(b) mango

(c) wheat

(d) Drosera

Answer

Ans.(d)


14. Angiosperms differ from gymnosperms in

(a) Having compound leaves

(b) being smaller in size

( c) being evergreen

(d) having ovules enclosed in the ovary

Answer

Ans.(d)


15. When ant part other than blade of leaf become flattened to perform function of leaf , it is :

(a) Cladode

(b) Phyllode

(c) staminode

(c) stipule

Answer

Ans.(b)


16. Pericarp and placentae are edible part of simple fleshy berry fruit is:

(a) Tomato

(b) date palm

(c) jack fruit

(d) banana

Answer

Ans.(a)


17. Which of the following are the characteristic features of solanaceae?

(a) Exstipulate leaves

(b) persistent calyx

(c) racemose inflorescence

(d) both (a) and (b)

Answer

Ans.(d)


18. Leaf lamina is reduced in:

(a) Hydrophytes

(b) mesophytes

(c) xerophytes

(d) epiphytes

Answer

Ans.(c)


19. Grasses are examples of the following typeof stem:

(a) Suckers

(b) runners

(c) stolons

(d) rhizomes

Answer

Ans.(b)


20.The leaves of dicotyledonous plants are mostly

(a) Hypostomatic

(b) epistomatic

(c) astomatic

(d) ampistomatic

Answer

Ans.(a)


21. Parallel multicostate venation is found in

(a) Plum

(b) palm

(c) castor

(d) cucurbita

Answer

Ans.(b)


22. The tendrils in smilax are the modification of

(a) Leaf

(b) stem

(c) stipules

(d) leaflet

Answer

Ans.(c)


23. The vegetable cabbage is a

(a) Modified stem

(b) inflorescence

(c) rhizome

(d) bud

Answer

Ans.(a)


24. The edible portion in radish is

(a) Fleshy stem

( b) fleshy root

(c) tuber

(d) corm

Answer

Ans.(b)


25. The flower is modified

(a) Shoot

(b) branch

(c) leaf let

(d) stipule

Answer

Ans.(a)


26. In potato food is stored in

(a) Stem

(b) root

(c) petiole

(d) leaves

Answer

Ans.(c)


27. If leaf base is swollen , it is called as

(a) Epipodium

(b) stylopodium

(c) pulvinus

(d) pinnule

Answer

Ans.(d)


28. Mint plant produces

(a) Rhizome

(b) offset

(c) stolon

(d) sucker

Answer

Ans.(b)


29. The spice clove is dried

(a) Flower

(b) flower bud

(c) fruit

(d) seed

Answer

Ans.(c)


30. Spot out the stranger

(a) Radish

(b) carrot

(c) brinjal

(d) turnip

Answer

Ans.(c)


31. Succulents are likely to be found in

(a) Tropical rain forest

(b) deciduous forest

(c) desert

(d) tundra

Answer

Ans.(b)


32. The family cruciferae is also known as

(a) Tetradynaceae

(b) brassicaeae

(c) raphanaceae

(d) siliquaceae

Answer

Ans.(b)


33. In compositae the placentation is

(a) Basal

(b) marginal

(c) free central

(d) axile

Answer

Ans.(a)


34. Mimosa belongs to the family

(a) Mimosodae

(b) rosaceae

(c) malvaceae

(d) cruciferae

Answer

Ans.(a)


35. Perianth is reduced to lodicules in the family

(a) Lilliaceae

(b) graminae

(c) compositae

(d) Malvaceae

Answer

Ans.(b)


36. The inflorescence in compositae is

(a) Umbel

(b) spike

(c) capitulum

(d) catkin

Answer

Ans.(c)


37. Triticumaestivumis

(a) Diploid

(b) triploid

(c) haploid

(d) hexaploid

Answer

Ans.(d)


38. In which of the following families calyx is modified into pappus

(a) Cruciferae

(b) leguminoceae

(c) compositae

(d) solanaceae

Answer

Ans.(c)


39. Papilionaceous corolla is found in

(a) Pisumsativum

(b) mimosa pudica

(c) delonix

(d) brassica

Answer

Ans.(a)


40. The placenta is attached to the developing seed near the

(a) Testa

(b) hilum

(c) micropyle

(d) chalaza

Answer

Ans.(b)


41. Climbing roots occur in

(a) Vanilla

(b) vanda

(c) pongamia

(d) taeniophylum

Answer

Ans.(b)


42. Approximately diameter of Victoria leaf is

(a) 1m

(b) 1.3m

(c) 3m

(d) 2m

Answer

Ans.(b)


43. Botanical name of venus fly trap is

(a) Aldrovanda

(b) dionaea

(c) utricularia

(d) napanthus

Answer

Ans.(b)


44. Black pepper is a

(a) Tree

(b) climber

(c) shrub

(d) herb

Answer

Ans.(b)


45. The ovary is half inferior in flowers of

(a) Sunflower

(b) lemon

(c) mustard

(d) peach

Answer

Ans.(d)


46. Stipular tendril modification found in

(a) Smilax

(b) pea

(c) guava

(d) mimosa pudica

Answer

Ans.(a)


47. Viscum is a

(a) Total stem parasite

(b) total root parasite

(c) partial stem parasite

(d) partial root parasite

Answer

Ans.(c)


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