Samacheer Class 11 Bio Botany Plant Kingdom Book Back Answers & Solutions

1Choose the correct statement regarding Gymnosperm1 questions

Q.10Choose the correct statement regarding the common characters of Gymnosperm and Angiosperm only a. Pollen tube help in the transfer of male nucleus & fertilization is Siphonogamous b. Heterospory is of common occurrence c. Vessels are the chief water-conducting elements d. Pollination is by Anemophilous method onlyv

Solution

a. Pollen tubes help in the transfer of the male nucleus & fertilization is Siphonogamous.

Answer:

a. Pollen tubes help in the transfer of the male nucleus & fertilization is Siphonogamous.

2Choose the correct statement regarding the common characters of Gymnosperm and Angiosperm only5 questions

Q.1Which one of the following is a wrong pair? a. National wood fossil park – Thuruvakkarai b. Shiwalik fossil park – Arunachala Pradesh c. Mandal fossil park – Madhya Pradesh d. Raj mahal hill – Jharkhandv

Solution

b. Shiwalik fossil park – Arunachala Pradesh

Answer:

b. Shiwalik fossil park – Arunachala Pradesh

Q.2Which one of the following is a wrong pair? a. Halophytic Algae – Dunaliella salina b. Epiphytic Algae – Rhodymenia c. Endophytic algae – Cladophora crisp ala d. Endozoic Algae – Chlorellav

Solution

c. Endophytic Algae – Cladophora crisp ala

Answer:

c. Endophytic Algae – Cladophora crisp ala

Q.3Which one of the following is a wrong pair? a. Father of Indian Bryology- Prof. Shiv. Ram Kashyap b. Father of Indian Phycology – F.E. Fritsch c. The classification of gymnosperm – Sporn d. The father of Indian Paleobotany – Prof. Birbal Sahniv

Solution

b.Father of Indian Phycology F.E.Fritsch
VI. Read the following assertion & reason. Find the correct answer.

Answer:

b.Father of Indian Phycology F.E.Fritsch
VI. Read the following assertion & reason. Find the correct answer.

Q.11Look at the picture and find out the correct answer. a. Gemmae of Marchantia b. Thallus of Riccia c. The gametophyte of Anthoceos d. The tubers of Anthoceosv

Solution

d.The tubers of Anthoceos

Answer:

d.The tubers of Anthoceos

Q.12Look at the picture and find out the correct answer a. The Asexual reproduction in Ultrix by the formation of zoospores b. Akinetes formation in Pithophora c. Scalariform conjugation in Zygnema d. Zygospore formation in spirogyrav

Solution

c. Scalariform conjugation in zygoma.
V.

Answer:

c. Scalariform conjugation in zygoma.
V.

3Choose the Right Answer:10 questions

Q.1Which of the plant group has gametophyte as a dominant phase ? a. Pteridophytes b. Bryophytes c. Gymnosperm d. Angiospermv

Solution

b. Bryophytes

Answer:

b. Bryophytes

Q.2Which of the following represent gametophytic generation in Pteridophytes? a. Prothallus b. Thallus c. Cone d. Rhizophorev

Solution

a. Prothallus

Answer:

a. Prothallus

Q.3The haploid number of chromosome for an Angiosperm is 14, the number of chromosome in its endosperm would be a. 7 b. 14 c. 42 d. 28v

Solution

c. 42

Answer:

c. 42

Q.4Endosperm is gymnosperm is formed a. At the time of fertilization b. Before fertilization c. After fertilization d. Along with the development of embryov

Solution

b. Before fertilization

Answer:

b. Before fertilization

Q.5Differentiate Haplontic and Diplontic life cycle.v

Solution

Haplontic life cycle
Diplontic life cycle.
Gametophyte phase Sporophytic phase
Dominant photosynthetic independent Recessive represented by the zygote.Zygote undergoes meiosis to restore haploidy e.g. Volvox.Spirogyra
Recessive represented by single to few celled stage Zygote develop in to dominant sporophyte e.g.Fucus, Gymnosperm, Angiosperm.

Answer:

Haplontic life cycle
Diplontic life cycle.
Gametophyte phase Sporophytic phase
Dominant photosynthetic independent Recessive represented by the zygote.Zygote undergoes meiosis to restore haploidy e.g. Volvox.Spirogyra
Recessive represented by single to few celled stage Zygote develop in to dominant sporophyte e.g.Fucus, Gymnosperm, Angiosperm.

Q.6What is plectostele – Give example.v

Solution

Plectostele: Xylem plates alternates with phloem plates. Example: Lycopodium clavatum.

Answer:

Plectostele: Xylem plates alternates with phloem plates. Example: Lycopodium clavatum.

Q.7What do we infer from the term Pucnoxylic?v

Solution

Secondary growth is also traced in gymnosperms, E.g. Cycas and Pinus.
The wood may be compact with narrow medullary ray this condition known as Pycnoxlic seen in Pinus.
It is opposite to Manoxylic condition which is seen in Cycas.

Answer:

Secondary growth is also traced in gymnosperms, E.g. Cycas and Pinus.
The wood may be compact with narrow medullary ray this condition known as Pycnoxlic seen in Pinus.
It is opposite to Manoxylic condition which is seen in Cycas.

Q.8Mention two characters shared by Gymnosperms and Angiosperms.v

Solution

Gymnosperms
Angiosperms
1
Seed bearing plants
Seed bearing plants
2
Plant body is a sporophyte and it is dominant phase.
Plant body is a sporophyte and it is also the dominant phase
3
Stem show secondary growth.
Stem show secondary growth only in dicots not in monocots.
4
Alternation of generation is present.
Alternation of generation is present.

Answer:

Gymnosperms
Angiosperms
1
Seed bearing plants
Seed bearing plants
2
Plant body is a sporophyte and it is dominant phase.
Plant body is a sporophyte and it is also the dominant phase
3
Stem show secondary growth.
Stem show secondary growth only in dicots not in monocots.
4
Alternation of generation is present.
Alternation of generation is present.

Q.9Do you think shape of chloroplast is unique for algae. Justify your answer.v

Solution

Variation among the shape of the chloroplast is found in members of algae. It is Cup-shaped (chlamydomonas). Discoid ((Chara), Girdle shaped (Ulothrix), reticulate (Oedogonium), spiral (Spirogyra), stellate (Zygnema) and plate like (Mougeoutia).

Answer:

Variation among the shape of the chloroplast is found in members of algae. It is Cup-shaped (chlamydomonas). Discoid ((Chara), Girdle shaped (Ulothrix), reticulate (Oedogonium), spiral (Spirogyra), stellate (Zygnema) and plate like (Mougeoutia).

Q.10Do you agree with the statement that Bryophytes need water for fertilization? Justify your answer.v

Solution

Being amphibians of plant kingdom they are simplest land inhabiting cryptogams and restricted to moist shady habitats. They need water for the male gametes to reach Archegonia to effect fertilization. So water is needed for completing their fertilization and their life cycle.
Part – II
11th Bio Botany Guide Plant Kingdom Additional Important Questions and Answers
I. Choose the correct option.

Answer:

Being amphibians of plant kingdom they are simplest land inhabiting cryptogams and restricted to moist shady habitats. They need water for the male gametes to reach Archegonia to effect fertilization. So water is needed for completing their fertilization and their life cycle.
Part – II
11th Bio Botany Guide Plant Kingdom Additional Important Questions and Answers
I. Choose the correct option.

4Choose the right statement regarding leaves of Pteridiumsp.2 questions

Q.8Which one of the following is a correct statement regarding Bryophyta a. Mostly terrestrial plants so water is not essential for reproduction b. The gametophyte is dominant but the sporophyte is independent c. They have well-developed xylem and phloem tissues d. They are the simplest land inhabiting cryptogams lacking vascular tissues.v

Solution

d.They are the simplest land inhabiting cryptogams lacking vascular tissues

Answer:

d.They are the simplest land inhabiting cryptogams lacking vascular tissues

Q.9Choose the correct statement regarding Gymnosperm a. The spores are generally homosporous b. The leaves are dimorphic, foliage and scale leaves are present c. The stem is aerial erect and unbranched in conifers d. Xylem mostly consists of only vessels.v

Solution

b. The leaves are dimorphic, foliage and scale leaves are present.

Answer:

b. The leaves are dimorphic, foliage and scale leaves are present.

5I. Choose the correct option.20 questions

Q.1Gametophytic phase is …………….v

(a) triploid
(b) tetraploid
(c) haploid
(d) diploid

Solution

(c) haploid

Answer:

(c) haploid

Q.2The numbers of known species of Angiosperms in the world is a. 268600 b. 286600 c. 224400 d. 274832v

Solution

a. 268600

Answer:

a. 268600

Q.3Which algae leads an endozoic life in Hydra?v

(a) Chlorella
(b) Gracilaria
(c) Ulothrix
(d) Chlamydomonas

Solution

(a) Chlorella

Answer:

(a) Chlorella

Q.4The protein bodies found in chromatophores & assist in the synthesis and storage of starch is a. Leucoplasts b. Floridean starch c. Pyrenoids d. Mannitolv

Solution

c. Pyrenoids

Answer:

c. Pyrenoids

Q.5Postelia palmaeformis is commonly known as a. Sea kelp b. Sea shell c. Sea palm d. Sea worthv

Solution

c. Sea palm

Answer:

c. Sea palm

Q.6In Chara, thallus is encrusted with …………….v

(a) calcium carbonate
(b) hydrogen sulphate
(c) silica
(d) ammonium carbonate

Solution

(a) calcium carbonate

Answer:

(a) calcium carbonate

Q.7Gemmae formation is not traced in which three of the given four options a. Marchanlia b. Riella c. Ricciocarpus d. Anthoceros (i) ab & c (ii) be & d (iii) ab & d (iv) ac & dv

Solution

(ii) be & d

Answer:

(ii) be & d

Q.8Find out the aquatic bryophytes of the following. a. Riella b. Ricciocarpus c. Riccia d. Bryopteris (i) a&c (ii) b&c (iii) c&d (iv) a&bv

Solution

(iv) a&b

Answer:

(iv) a&b

Q.9…………… are thin-walled non – motile spores.v

(a) Zoospores
(b) Akinetes
(c) Aplanospores
(d) Genunae

Solution

(c) Aplanospores

Answer:

(c) Aplanospores

Q.10which one of the following is a terrestrial chiorophycea a. Chara b. Zygnema c. Trentipohlia d. Ulvav

Solution

c. Trentipohlia

Answer:

c. Trentipohlia

Q.11Thick walled spores meant for perrennation are known as a. Aplanospores b. Akinetes c. Endospores d. Zoosporesv

Solution

b. Akinetes

Answer:

b. Akinetes

Q.12The photosynthetic part of the Phaeophyceae thallus Is called asv

(a) holdfast
(b) stipes
(c) lamina
(d) fronds

Solution

(d) fronds

Answer:

(d) fronds

Q.13The female sex organ of red algae is known as a. Archegonium b. Spermatogonium c. Carpogonium d. Oogoniumv

Solution

c. Carpogonium

Answer:

c. Carpogonium

Q.14Endosperm is triploid and haploid in a. Pteridophyta & Gymnosperm b. Angiosperm & Gymnosperm c. Gymnosperm & monocot d. Gymnosperm & dicotv

Solution

b. Angiosperm & Gymnosperm

Answer:

b. Angiosperm & Gymnosperm

Q.15Gelidium belongs to …………… members.v

(a) Rhodophyccae
(b) Phaeophyceae
(c) Cyanophyccae
(d) Dinophyceae

Solution

(a) Rhodophyceae

Answer:

(a) Rhodophyceae

Q.16……………….. is known as leather leaf fern a. Marsilea b. Azolla c. Selaginella d. Rumohra adiantiformisv

Solution

d. Rumohra adiantiformis

Answer:

d. Rumohra adiantiformis

Q.17Stele includes a. Xylem, phloem & cambium b. Xylem, phloem & medulla c. Xylem, phloem & pericycle d. Xylem, phloem, pericycle & medullav

Solution

d. Xylem, phloem, pericycle & medulla

Answer:

d. Xylem, phloem, pericycle & medulla

Q.18Marchantia vegetatively propagates by …………….v

(a) tubers
(b) gemmae
(c) buds
(d) brood bodies

Solution

(b) gemmae

Answer:

(b) gemmae

Q.19The organ in bryophytes that help to attach the thallus to the substratum is a. Hold fast b. Rhizoids c. Rhizopore d.Rootsv

Solution

a. Holdfast

Answer:

a. Holdfast

Q.20Coralloid roots of cycas have a symbiotic association with …………….v

(a) Blue-green algae
(b) Mycorrhiza
(c) Euglena
(d) Rhizobium

Solution

(a) Blue-green algae
II. Match the following & find the correct answer.

Answer:

(a) Blue-green algae
II. Match the following & find the correct answer.

6II. Match the following & find the correct answer.5 questions

Q.1(i) Spores look similar to parental cell – Zoospore (A) (ii) Thick walled aplanospores – Autospore (B) (iii) Thin walled non-motile spores – Hypnospore (C) (iv) Thin walled motile spores – Aplanospore (D)v

Solution

(b) B-C-D-A

Answer:

(b) B-C-D-A

Q.2(i) Helianthusannum – Amphiboloicstele (A) (ii) Lycopodium serratum – Eustele(B) (iii) Zeamays – Actinostele (C) (iv) Adiantumpedatum – Atactostele (D)v

Solution

(a) B-C-D-A

Answer:

(a) B-C-D-A

Q.3(i) Fossil bryophyte – Lepidodendron, Williamson (ii) Fossil Algae – Calamites Baragwanthia (iii) Fossil pteridophyte – Naiadita, Hepaticites (iv) Fossil Gymnosperm – Palaeoporella,Dimorphosiphonv

Solution

(d) C-D-B-A

Answer:

(d) C-D-B-A

Q.4(i) Abies balsamea – Drug for cancer treatment (A) (ii)Taxus brevifolia – Wood for making door, boat & railway sleepers (B) (iii) Cedrus deodara – Treatment for asthama & bronchitis(C) (iv) Ephedra gerardiana – Slide mounting medium(D)v

Solution

(c) D-A-B-C

Answer:

(c) D-A-B-C

Q.5Find the chromosome number of the following by choosing the correct option. (i) Embryo ofblyophyta (ii) Embryo ofAngiosperm (iii) Endosperm ofAngiosperm (iv) Sporophyte ofpteridophytav

Solution

(a) (I) n (II) 2n (III) 3n (IV) 2n
III. Choose the wrong statement.

Answer:

(a) (I) n (II) 2n (III) 3n (IV) 2n
III. Choose the wrong statement.

7III. Choose the wrong statement.7 questions

Q.1The following statement is not applicable to which one of the following options The sporophyte is dominant, photosynthetic, and independent. The gametophytic phase is represented by a single to few celled gametophyte a. Fucus b. Mango c. Pinus d. Marchantiav

Solution

d. Marchantia

Answer:

d. Marchantia

Q.2One of the following is not a Marine Algae. a. Gracilaria b. Sargassum c. Oedogonium d. Cladophorav

Solution

c. Oedogonium

Answer:

c. Oedogonium

Q.3Which one of the following is not a Vascular cryptogam a. Lycopodium b. Anthoceros c. Equisetum d. Selaginellav

Solution

b. Anthoceros

Answer:

b. Anthoceros

Q.4Which one among the given four doesn’t belong to Chlorophyceae a. Chiorella b. Volvox c. Chara d. Sargassumv

Solution

d. Sargassum

Answer:

d. Sargassum

Q.5Pollination is not entomophilous in a. Hibiscus b. Mangifera c. Chrysanthemum d. Cycasv

Solution

:
d. Cycas

Answer:

:
d. Cycas

Q.6The following one is not a monoecious plant a. Pinus b. Cycas c. Alnus d. Ginkgov

Solution

b. Cycas

Answer:

b. Cycas

Q.7Which one of the following is not the correct statement regarding Algae? a. The study of Algae is known as Phycology b. A wide range of thallus organization is found in Algae c. Algae are eukaryotic except Blue Green Algae d. They are the simplest plant group with root stem and leavesv

Solution

d. They are the simplest plant group with root stem and leaves
IV. Find out the true or false statements from the following and on that basis find the correct answer.

Answer:

d. They are the simplest plant group with root stem and leaves
IV. Find out the true or false statements from the following and on that basis find the correct answer.

8IV. Find out the true or false statements from the following and on that basis find the correct answer.7 questions

Q.1(i) Chara thallus is encrusted with calcium carbonate (ii) Siliceous wall occurs in the cell wall of Diatom (iii) Soil inhabiting algae – Fritshchiella (iv) Cladophora crispate is growing nowv

Solution

c. (I) True (II) True (III) False (IV) True

Answer:

c. (I) True (II) True (III) False (IV) True

Q.2(i) Prothallus develop into a sporophyte (ii) Algae growing on snow is known as cryptophytes (iii) The common name of Postelia Palmaeformis is known as sea palm. (iv) Endosperm is triploid in pinus.v

Solution

a. (I) False (II) True (III) True (IV) False

Answer:

a. (I) False (II) True (III) True (IV) False

Q.3(i) Apogamy and Apospory is common in pteridophytes (ii) Spore bearing leaves in pteridophytes are known as a sorus (iii) Branches of limited growth and branches of unlimited growth are seen in gymnosperm (iv) Cambium occur in gymnosperm as in dicotsv

Solution

d. (I) True (II) False (III) False (IV) True

Answer:

d. (I) True (II) False (III) False (IV) True

Q.4(i) Fungi play important role in soil conservation (ii) Vascular cryptogams were predominant in the paleozoic era (iii) Gymnosperms were dominant in the early cretaceous period. (iv) Angiosperms appeared during the Jurassic periodv

Solution

b (I) False (II) True (III) False (IV) False

Answer:

b (I) False (II) True (III) False (IV) False

Q.5(i) Polyembryony is traced in Pteridophyta (ii) Vessels are present in Gnetum and ephedra (iii) Heterosporus condition is seen in Lycopodium (iv) Corolloid root occur in Cycasv

Solution

a. (I) False (II) True (III) False (IV) True

Answer:

a. (I) False (II) True (III) False (IV) True

Q.6Which one of the following is the correct statement regarding Phaeophyta a. It is commonly known as Red Algae b. The plant body has fronds, stipe & hold fast c. The reserve material is Floridian starch d. Sexual reproduction is isogamousv

Solution

b. The plant body has fronds, stipe & holdfast

Answer:

b. The plant body has fronds, stipe & holdfast

Q.7Choose the right statement regarding leaves of Pteridiumsp. a. It is used as food b. Green dye is derived from it. c. It is used as bio-fertilizer d. It is an ornamental foliage plantv

Solution

b.Green dye is derived from it

Answer:

b.Green dye is derived from it

9VI. Read the following assertion & reason. Find the correct answer.5 questions

Q.1Assertion: Chlorophyceae is known as green algae. Reason: These plants have chlorophyll & chlorophyll as their major photosynthetic pigments. (a) Assertion and Reason are correct. The reason is explaining Assertion. (b) Assertion and Reason are correct, but Reason is not explaining Assertion. (c) Assertion is true, but Reason is wrong. (d) Assertion is true, but Reason is not explaining Assertion.v

Solution

(a) Assertion and Reason are correct. The reason is explaining Assertion.

Answer:

(a) Assertion and Reason are correct. The reason is explaining Assertion.

Q.2Assertion: In Bryophytes haploid gametophyte, alternate with diploid sporophyte phase. Reason: Bryophytes lack vascular tissue and hence called non-vascular cryptogams. (a) Assertion and Reason are correct. The reason explaining Assertion. (b) Assertion and Reason are correct, but Reason is not explaining Assertion. (c) Assertion is true, but Reason is wrong. (d) Assertion is true, but Reason is not explaining Assertion.v

Solution

(b) Assertion and Reason are correct, but Reason is not explaining Assertion

Answer:

(b) Assertion and Reason are correct, but Reason is not explaining Assertion

Q.3Assertion: Gnetum has flowers and it also has vessels as conducting elements like angiosperm. Reason: Gnetum is a primitive gymnosperm. (a) Assertion and Reason are correct, Reason explaining assertion. (b) Assertion and Reason are correct, but Reason not explaining Assertion. (c) Assertion is true, but Reason is wrong. (d) Assertion is true, but Reason is not explaining Assertion.v

Solution

(c) Assertion is true, but Reason is wrong.

Answer:

(c) Assertion is true, but Reason is wrong.

Q.4Assertion: The endosperm is haploid and develops before fertilization in a gymnosperm. Reason: The endosperm is triploid and develops after fertilization in angiosperm. (a) Assertion and Reason are correct. The reason explaining Assertion. (b) Assertion and Reason are correct, but Reason is not explaining Assertion. (c) Assertion is true, but Reason is wrong. (d) Assertion is true, but Reason is not explaining Assertion.v

Solution

(b) Assertion and Reason are correct, but Reason is not explaining Assertion.

Answer:

(b) Assertion and Reason are correct, but Reason is not explaining Assertion.

Q.5Assertion: The embryogeny is endoscopic in Bryophytes. Reason: The first division of the zygote is transverse & the apex of the embryo develops from the outer cell. (a) Assertion and Reason are correct, Reason explaining Assertion. (b) Assertion and Reason are correct, but Reason is not explaining Assertion. (c) Assertion is true, but Reason is wrong. (d) Assertion is true, but Reason is not explaining Assertion.v

Solution

(a) Assertion and reason are correct, Reason explaining Assertion.
VII. In the following diagram what are the parts (A) (B) (C) (D) representing?

Answer:

(a) Assertion and reason are correct, Reason explaining Assertion.
VII. In the following diagram what are the parts (A) (B) (C) (D) representing?