ROOT-STEM EAMCET ASSIGNMENT

1	[A] : All roots are positively geotropic. [R] : Respiratory roots are achlorophyllous. A and R are correct and R is the correct explanation of A A and R are correct but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:A is false but R is true
2	Complete tap root stores food material in i) Raphanus ii) Daucus iii) Beta vulgaris i and iii ii and iv only ii i and ii Ans:i and ii
3	Adventious respiratory roots are seen in Jussiaea Avicennia Rhizophora Trapa Ans:Jussiaea
4	Plants with the following root modifications are used as green manure Parasitic roots Photosynthetic roots Nodular roots Storage roots Ans:Nodular roots
5	Study the following and identify the correct item groups i)Jussiaea Free floating hydrophyte Floating roots help in respiration ii)Dolichos Legume plant Modified roots convert N2 to NH3 iii)Orobanche Complete root parasite Damages tobacco crop iv)Striga Partial root parasite Damages paddy crop i and iv iii and iv i and iii i, ii and iii Ans:i, ii and iii
6	One of the following plants develops parasitic roots at earlier stages of its life and later becomes autotrophic Rafflesia Balanophora Santalum album Cuscuta Ans:Santalum album
7	The plant with largest flowers in the plant kingdom is a/an Epiphyte Hydrophyte Parasite Autotroph Ans:Parasite
8	Inulin is stored in the storage roots of Asparagus Ruellia Dahlia Ipomoea Ans:Dahlia
9	[A] : Vanda is an epiphyte. [R] : It grows in deficient water supply condition. A and R are correct and R is the correct explanation of A A and R are correct but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:A and R are correct but R is not the correct explanation of A
10	Choose the incorrect pair Modified roots of Taeniphyllum – Absorb CO2 and H2O from atmosphere Modified roots of Loranthus – Absorb organic food from host Modified roots of Avicennia – Absorb O2 from atmosphere Modified roots of Beta vulgarus – Store sugars Ans:Modified roots of Loranthus – Absorb organic food from host
11	Top shaped roots are seen in Beta vulgaris Tinospora cordifolia Ipomoea batatus Raphanus sativus Ans:Beta vulgaris
12	Dead hygroscopic epidermis is seen in the modified roots of I. Vanda II. Tinospora III. Trapa IV. Taeniophyllum I, II III, IV II, III I, IV Ans:I, II
13	Match the following List – I List – II a)Roots carryout I)Jussiaea photosynthesis but do not absorb water B)Roots absorb atmospheric II)Trapa moisture but do not carry out photosynthesis C)Roots carry out photosynthesis III)Taeniophyllum and absorb water in solvent form D)Roots carry out photosynthesis IV)Tinospora and absorb water in vapor form V)Vanda A-IV, B-V, C-II, D-I A-IV, B-V, C-II, D-III A-V, B-IV, C-III, D-II A-IV, B-III, C-I, D-II Ans:A-IV, B-V, C-II, D-III
14	N2 is converted into NH3 by the modified roots of Tinospora Arachis Avicennia Striga Ans:Arachis
15	Modified roots of Plant A release O2 during day time. Modified roots of Plant B mainly meant for supplying O2 to the root system of the plant all the time. A and B are respectively I. Tinospora II. Jussiaea III. Rhizophora IV. Vanda I and IV II and IV III and I I and II Ans:II and IV
16	In the life cycle of one of the following plants mineral water is absorbed from the host plant as well as soil. Striga Loranthus Santalum Viscum Ans:Santalum
17	The following modified roots do not have root hairs I. Root nodules II. Respiratory roots III. Velamen roots IV. Fusiform roots I and II II and III III and IV I and IV Ans:II and III
18	Roots with leg-haemoglobin are Respiratory roots Photosynthetic roots Nodular roots Velamen roots Ans:Nodular roots
19	The shape of the bacterium Rhizobium is Rod shaped Spherical Spiral Comma like Ans:Rod shaped
20	[A]: Legumes are used as Green manure [R]: Legume roots fix atmospheric Nitrogen into Ammonia Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans: Both A and R are true and R is the correct explanation of A
21	Longitudinal growth of the stem is due to the activity of its Laterial bud Adventitious bud Axiallary bud Terminal bud Ans:Terminal bud
22	[A] : Passiflora is a climber. [R] : It has sensitive stem modification. A and R are correct and R is the correct explanation of A A and R are correct but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:A and R are correct and R is the correct explanation of A
23	A part of the bud is modified into a climbing organ in Hugonia Vitis Cissus Artabotrys Ans:Artabotrys
24	Study the following and identify the correct match Plant Function of its modified stem A. Carissa I) Photosynthesis B. Bougainvillea II) Storage of food C. Hugonia III) Protection D. Opuntia IV) Climbing V) Protection and climbing A-III, B-V, C-IV, D-I A-III, B-V, C-II, D-I A-V, B-III, C-IV, D-II A-III, B-IV, C-I, D-II Ans:A-III, B-V, C-IV, D-I
25	Only one internode of the stem stores food materials in Zingiber Curcuma Knol-knol Bulbophyllum Ans:Bulbophyllum
26	Study the following and identify the correct sets Plant Modified stem I Modified stem II i) Agave Floral bulbils Offsets ii) Oxalis Root bulbils Runners iii) Ruscus Phyllode Cladode iv) Asparagus Cladode Stem tuber i and iii i and ii ii and iii iii and iv Ans:i and ii
27	[A] : Stems of Lippia are involved in vegetative reproduction. [R] : Vegetative reproduction is carried out by only sub-aerial modified stems. A and R are correct and R is the correct explanation of A A and R are correct but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:A is true but R is false
28	Adventitious roots are formed only at the nodal regions of the following modified stems i) Corm ii) Runner iii) Stolon iv) Offset i and ii ii and iii ii and iv iii and iv Ans:ii and iv
29	The following modified stems help in vegetative reproduction but do not have adventitious roots during their association with the parental plant Bulbs and bulbils Stem tubers and bulbs Psedobulbs and bulbils Stem tubers and bulbils Ans:Stem tubers and bulbils
30	Scale leaves are seen in plants with the following modified stems i) Cladodes ii) Phylloclades iii) Stolons iv) Corms i and ii ii and iv i and iii i and iv Ans:i and iv
31	Aerial branches of one internodal length are seen in Agave Pistia Asparagus Eichhornia Ans:Asparagus
32	Modified stems are absent but modified branches are present in Stachys tubifera Musa Canna Colocasia Ans:Stachys tubifera
33	The following modified stems show relatively more positive geotropism Stem tuber Rhizome Corm Bulb Ans:Stem tuber
34	Both tunicae and fleshy underground irregularly arranged scale leaves are seen in Stachys tubifera Allium cepa Allium sativum Lilium candidum Ans:Allium sativum
35	Arrange the following modified stems in a sequence of positively geotropic to negatively geotropic growth patterns i) Modified stem of Curcuma ii) Modified stem of Amorphophallus iii) Modified stem of Stachys tubifera iv) Modified stem of Mentha arvensis ii, iv, i, iii iii, i, iv, ii iii, iv, i, ii i, iii, iv, ii Ans:iii, i, iv, ii
36	Terminal buds of the following modified stems always transform into an inflorescence Corm Stem tuber Bulb Off set Ans:Bulb
37	The following set of modified stems are always axillary bud modifications Cladode, offset, runner Sucker, rhizome, cladode Thorn, stem tuber, bulb Cladode, offset, stem tuber Ans:Cladode, offset, stem tuber
38	Central Potato Research Institute is at Lucknow Simla Hyderabad New Delhi Ans:Simla
39	Downward obliquely growing branches are seen in Nerium Chrysanthemum Colocasia Hydrocotyle Ans:Nerium
40	Match the following A. Modified stem with only basal I) Stem tuber adventitious roots B. Modified stem with both lateral II) Runner and basal adventitious roots C. Modified stem without III) Stolon adventitious roots D. Modified stem has adventitious IV) Bulb roots and leaves only at the nodes V) Corm A-V, B-IV, C-II, D-I A-IV, B-V, C-I, D-II A-IV, B-III, C-II, D-I A-IV, B-V, C-I, D-III Ans: A-IV, B-V, C-I, D-II