- Consider the following statements and select the incorrect
ones regarding the modifications of stem.
I. Twiners are flexible and insensitive stems that are
unable to coil around an upright support by itself.
II. Procumbent trailers are shoots that spread
horizontally along the ground with branches
spreading in all directions.
III. Offsets are one internode long small runners found
in rosette plants at the surface of ground or water.
I V. Scramblers are stem having sensitive structures that
rise up a support by itself.
(a) I, III and IV (b) II and III
(c) I, II and IV (d) I, II, III and IV - A bulb in which fleshy scales represent buds that occur in
irregular concentric rings around the central floral axis is
found in
(a) onion (b) garlic
(c) tulip (d) lily. - A compound corymb showing indeterminate inflorescence
in which flowers remain undeveloped is found in
(a) Brassica oleraceae (b) Cassia fistula
(c) Azadirachta indica (d) Foeniculum vulgare. - Spines present on the areoles of Opuntia represent
(a) stems (b) leaves
(c) buds (d) scales. - Identify the incorrect pair.
(a) Tap root system – Asparagus
(b) Fibrous root system – Wheat
(c) Fasciculated roots – Dahlia
(d) Stilt roots – Sorghum - An inflorescence has a small conical receptacle surrounded
by involucre of coloured bracts, giving the appearance
of a flower. It comprises of pedicellate achlamydeous
unisexual flowers with single female flower centrally placed
surrounded by numerous centrifugally arranged male
flowers. This type of inflorescence is identified as
(a) verticillaster (b) hypanthodium
(c) cyathium (d) capitulum. - Select the correctly matched pair.
(a) Unbranched stem – Marchantia
(b) Dichotomous branching – Saraca
(c) Monopodial branching – Eucalyptus
(d) Dichasial branching – Sugarcane - Match the columns and select the correct option.
Column I Column II
A. Uniparous helicoid (i) Heliotropium
B. Biparous cyme (ii) Drosera
C. Monochasial scorpioid (iii) Asclepias
D. Polychasial cyme (iv) Spergula
(a) A-(ii), B-(iv), C-(i), D-(iii)
(b) A-(iii), B-(ii), C-(i), D-(iv)
(c) A-(iii), B-(iv), C-(i), D-(ii)
(d) A-(iii), B-(ii), C-(iv), D-(i) - Roots carry out the function of balancing in
(a) Cuscuta (b) Lemna
(c) Utricularia (d) Tinospora. - Identify the correct set of statements.
I. In leguminous plants, the swollen leaf base is called
pulvinus.
II. In Australian acacia, the buds become fleshy and
store mucilage.
III. Curcuma is a straggling rhizome with sympodial axis.
I V. The leaves in Alstonia show alternate phyllotaxy.
(a) I and IV (b) II and III
(c) I and III (d) II, III and IV - Read the given statements and select the correct option.
Statement 1 : Mangrove plants possess pneumatophores.
(^1) TI (^2) E
ENIC P
DBE
O
I
IIRI
LA
G
OUUR
OLNA GRHK
Y
L
GYO IU
RBER N NDM L
UIPUYP
HMEC
U NIU LI
A
N
OPLASVI
MINU
R E LAXIN
IA A
M
NP
N
34
OH
N
UF
E
EG S
(^29) T
NTEG
GUT
X S
(^11) A M NO E
12
U^14
(^17) S HUR
SS
(^20) ERI N
PT
R
L
30
Contributed by : Kunal Sharma (Delhi), Ajay Tyagi (U.P.)
SOLUTIONSTONOVEMBER 7201 CROSSWORD
I
RASE^576 TS^8
AB^9
10
L
EA
(^1315)
E
(^16) A
A
(^18) E (^19) U
SB^21 NT^23
(^24) D (^25) P 26
22
27
Y^28 EI
AL
D S
S
N
S
BIO ME
T
A
S
I
S
MPP-9 CLASS XII ANSWER KEY
- (c) 2. (b) 3. (d) 4. (b) 5. (c)
- (c) 7. (d) 8. (b) 9. (b) 10. (d)
- (d) 12. (d) 13. (b) 14. (b) 15. (c)
- (d) 17. (b) 18. (d) 19. (a) 20. (a)
- (d) 22. (a) 23. (d) 24. (b) 25. (c)
- (a) 27. (d) 28. (c) 29. (b) 30. (c)
- (b) 32. (b) 33. (c) 34. (d) 35. (b)
- (a) 37. (a) 38. (a) 39. (a) 40. (c)