Morphology of Flowering Plant
Multiple Choice Questions and Answers
1. The root can be differentiated from the stem because of the absence of
(a) green colour
(b) nodes and internodes
(c) leaves
(d) branches
Answer: (b) nodes and internodes
2. When the stem is modified into green flattened structure and leaves modified into spines, is called as
(a) phyllode
(b) cladode
(c) bulbil
(d) phylloclade
Answer: (d) phylloclade
3. Haustoria are found in
(a) Vanda
(b) Screwpine
(c) Mistletoe
(d) Trapa
Answer: (c) Mistletoe
4. The bud that grows at the apex of a stem or branch is called as
(a) axillary bud
(b) terminal bud
(c) accessory bud
(d) adventitious bud
Answer: (b) terminal bud
5. The part of the root where the cells undergo rapid elongation, enlargement and is responsible for growth in length of the root is known as
(a) meristematic region
(b) region of elongation
(c) region of maturation
(d) root cap region
Answer: (b) region of elongation
6. Which one of the following is not a characteristic of root?
(a) presence of chlorophyll
(b) presence of root cap
(c) presence of unicellular hair
(d) absence of buds
Answer: (a) presence of chlorophyll
7. Roots that grow from any part of the plant body other than the radicle are called
(a) tap root
(b) adventitious roots
(c) modified roots
(d) respiratory roots
Answer: (b) adventitious roots
8. The storage root in carrot is a modified
(a) tap root
(b) adventitious root
(c) stem
(d) leaf
Answer: (a) tap root
9. The prop of stilt root are meant for
(a) storage
(b) sucking
(c) respiration
(d) mechanical support
Answer: (d) mechanical support
10. The stem developes directly from
(a) plumule
(b) radical
(c) integuments
(d) cotyledons
Answer: (a) plumule
11. The place on stem or branch from where one or more leaves arise is known as
(a) node
(b) bud
(c) apex
(d) internode
Answer: (a) node
12. Tendrils of passion flower and wine are modifications of
(a) leaf
(b) branch
(c) root
(d) apex of stem
Answer: (d) apex of stem
13. Root hairs are
(a) unicellular
(b) acellular
(c) multicellular
(d) bicellular
Answer: (a) unicellular
14. When margin of leaf is like the teeth of a saw it is called
(a) entire
(b) serrate
(c) wavy
(d) spiny
Answer: (b) serrate
15. Leaf tendrils are found in
(a) Passiflora
(b) Cucurbita
(c) Lathyrus aphace
(d) Grape vine
Answer: (c) Lathyrus aphace
16. When the rachis bears a number of leaflets laterally, it is called
(a) simple leaf
(b) pinnate compound leaf
(c) palmate compound leaf
(d) isobilateral leaf
Answer: (b) pinnate compound leaf
17. Phylloclade is a modification of
(a) stem
(b) leaf
(c) fruit
(d) flower
Answer: (a) stem
18. Gram plants possess
(a) nodulated roots
(b) tap roots
(c) hygroscopic roots
(d) adventitious roots
Answer: (a) nodulated roots
19. Dahlia possesses
(a) stilt roots
(b) fascicled root tubers
(c) tuberous roots
(d) none of these
Answer: (b) fascicled root tubers
20. Tap root is direct prolongation of the
(a) plumule
(b) radical
(c) endosperm
(d) funiculus
Answer: (a) plumule
21. The pillars like brownish structures which hangs vertically downwards from the aerial branches are called
(a) prop roots
(b) epiphytic roots
(c) pneumatophores
(d) stilt roots
Answer: (a) prop roots
22. Unbranched, erect, cylindrical stout stem with distinct nodes and internodes having a jointed appearance is called
(a) Excurrent
(b) Runner
(c) Caudex
(d) Culm
Answer: (d) Culm
23. Thread-like sensitive, spirally coiled structures which help the plant in climbing are called
(a) thorns
(b) tendrils
(c) prickles
(d) none of these
Answer: (b) tendrils
24. Which of the following underground, fleshy structure is a stems?
(a) potato
(b) sweet potato
(c) turnip
(d) carrot
Answer: (a) potato
25. Plants which complete their life cycle in single season are called
(a) annuals
(b) biennials
(c) perennials
(d) none of these
Answer: (a) annuals
26. Phyllode is a modification of
(a) petiole
(b) root
(c) flower
(d) none of these
Answer: (a) petiole
27. Stipular tendrils are found in
(a) Cucurbita
(b) Smilax
(c) Clematis
(d) Passiflora
Answer: (b) Smilax
28. Parallel venation is a characteristic of
(a) Shoe flower
(b) Peepal
(c) Grasses
(d) Legumes
Answer: (c) Grasses
29. Leaves catch insects in
(a) Mulberry
(b) Calotropis
(c) Nepenthes and Dionea
(d) Sunflower
Answer: (c) Nepenthes and Dionea
30. When the apex of leaf is round, it is called as
(a) obtuse
(b) cuspidate
(c) acuminate
(d) retuse
Answer: (a) obtuse
31. When a lateral bud arises in the axil of a leaf, it is known as
(a) accessory buds
(b) axillary buds
(c) sub-petiolar buds
(d) cauline buds
Answer: (b) axillary buds
32. Superficial, stiff and pointed outgrowth on stem surface are called
(a) prickles
(b) spines
(c) hooks
(d) thorns
Answer: (a) prickles
33. Plants that live for many years are called
(a) perennial
(b) biennial
(c) annual
(d) none
Answer: (a) perennial
34. A sucker is a modified underground
(a) root
(b) stem
(c) only a
(d) none
Answer: (b) stem
35. When leaflets are articulated at the tip of the petiole, the leaf is said to be
(a) palmately compound leaf
(b) pinnately compound leaf
(c) simple leaf
(d) none
Answer: (a) palmately compound leaf
36. The arrangement of leaves on the stem or branch is called
(a) Inflorescence
(b) Phyllotaxy
(c) Venation
(d) None
Answer: (b) Phyllotaxy
37. In Nepenthes which part of the plant assumes pitcher shape?
(a) root
(b) stem
(c) leaves
(d) flower
Answer: (c) leaves
38. The flattened and leaf like petiole is called
(a) cladode
(b) phylloclade
(c) phyllode
(d) all of these
Answer: (c) phyllode
39. Hard, woody and pointed structures present in the axil of a leaf is called
(a) Thorns
(b) Spine
(c) Needle
(d) Prickles
Answer: (a) Thorns
40. In onion, the food is stored in
(a) scale leaves
(b) roots
(c) bulb
(d) none
Answer: (a) scale leaves
41. The arrangement of veins and veinlets in the lamina is known as
(a) Inflorescence
(b) Phyllotaxy
(c) Venation
(d) None
Answer: (c) Venation
42. The creeping stem with long internodes is called
(a) stolon
(b) offset
(c) runner
(d) sucker
Answer: (a) stolon
43. Leaf with a single, entire or incompletely divided lamina is called
(a) palmately compound leaf
(b) pinnately compound leaf
(c) simple leaf
(d) compound leaf
Answer: (c) simple leaf
44. The type of venation in banana is
(a) parallel
(b) reticulate
(c) unicostate reticulate
(d) none
Answer: (a) parallel
45. Plants that live for one year
(a) perennial
(b) biennial
(c) annual
(d) none
Answer: (c) annual
46. Plants which grow in water scarcity and dry region
(a) xerophytes
(b) mesophytes
(c) epiphytes
(d) none
Answer: (a) xerophytes
47. Roots which arise from the first few nodes of the stem
(a) stilt roots
(b) prop roots
(c) climbing rooks
(d) none
Answer: (a) stilt roots
48. Mention the primary functions of a root
(a) anchorage
(b) absorption
(c) storage
(d) all of these
Answer: (d) all of these
49. Leaves of axillary buds are modified into spines in
(a) Opuntia
(b) Zizyphus
(c) Aloe
(d) Argemone
Answer: (a) Opuntia
50. Potato is a modification of underground
(a) stem
(b) root
(c) leaf
(d) none
Answer: (a) stem