Porous wood has abundance of

  •  vessels

  •  fibres only

  •  tracheids

  • sieve tubes

Algae are useful because they

  • are large in number

  •  are used in alcoholic fermentation

  •  purify the atmosphere

  • are used in curdling of milk

The plant body of moss (funaria) is

  • completely sporophyte

  •  predominatly sporophyte with gametophyte

  •  completely gametophyte

  • predominantly gametophyte with sporophyte

Megasporophyll of Cycas has the same nature as

  • stamen

  •  petal

  •  sepal

  • carpel

"Ordines Anomali" of Bentham and Hooker includes

  • seed plants showing abnormal forms of growth and devlopment

  • plants described only in fossil state

  • plants described in the literature but which Bentham and Hooker did not see in original

  • a few order which could not be placed satisfaction in the classification.

Ectophloic Siphonostele is found in

  • Osmunda and Equisetum

  • Marsilea and Botrychium

  • Adiantum and Cucurbitaceae

  • Dicksonia and Maidenhair fern

Chlorenchyma is known to develop in the

  • cytoplasm of Chlorella

  • mycelium of a green mould such as Aspergillus

  • spore capsule of a moss

  • pollen tube of Pinus

Which of the following algae is not haplo-diplontic?
  • Polysiphonia
  • Kelps
  • Fucus
  • Spirogyra

Asexaul reproduction by pear shaped biflagellate zoospores is seen in most:

  • Green algae

  • Brown algae

  • Red algae

  • Both (2) and (3)

All the following pteridophytes belong to the Class Pteropsida except:

  •  Dryopteris

  •  Pteris

  •  Selaginella

  •  Adiantum

Sexual reproduction by non-flagellated but similar in size gametes is seen in:

  • Chlamydomonas

  •  Volvox

  •  Spirogyra

  •  Fucus

In mosses, the sex organs are seen in:

  • Protonema stage

  • Leafy stage

  • Capsule of the sporophyte

  • Seta of the sporophyte

The plant part which consists of two generations, one within the other, is

  • germinated pollen grain

  • embryo

  • unfertilized ovule

  • seed

In Ulothrix meiosis takes place in

  • cells of the filament

  •  holdfast

  •  zygote

  • zoospores

Mossess and ferns are found in moist and shady places because both

  • require presence of water for fertilization

  •  do not need sunlight for photosynthesis

  •  depend for their nutrition on microorganisms which can survive only at low temperature

  • cannot compete with sun-loving plants

The life cycle pattern shown in the given diagram is not seen in:

 

  • Chlamydomanas

  • Spirogyra

  • Volvox

  • Ectocarpus

The given diagrams shown:-

  • An alga that lacks flagellated cells

  • A liverwort

  • A heterosporous pteridophyte

  • A gymnosperm with non motile sperms

Identify the statement that most accurately describes the plant shown in the given figure:

 

  • This the male prothallus of Marchantia; A is antheridiophore and B is Gemma cup

  • This the female prothallus of Marchantia; A is archegoniophore and B is Gemma cup

  • This the male prothallus of Sphagnum; A is antheridiophore and B is Gemma cup

  • This the female prothallus of spahgnum; A is archegoniphore and B is Gemma cup

The features seen in the gymnosperm Cycas include:

I. Coralloid roots

II. Unbranched stems

III. Pinnate persistent leaves for a few years

IV. Male cones and megasporophyllys borne on same plant

  • I and II only

  • I and IV only

  • I, II and III only

  • I, II, III, and IV

Both bryophytes and pteridophytes:

  • are vascular cryptogams

  • have a dominant sporophyte

  • reproduce only sexually

  • are haplo-diplontic

The first group of terrestrial plants to get rid of the swimming sperm was the:

  • Club mosses

  • Ferns

  • Gymnosperms

  • Angiosperms

All the following differentiate gymnosperms from the higher cryptogams except:

  • Presence of an independent green gametophyte

  • development of an ovule

  • Formation of the pollen tube

  • Presence of cambium

Heterosporous pteridophyte includes both:

  •  Lycopodium and Equisetum

  •  Selaginella and Salvinia

  •  Psilotum and Phylloglossum

  •  Selaginella and Equisetum

The life cycle is not haplo-diplontic in:

  • Bryophytes

  • Pteridophytes

  •  Polysiphonia

  •  Fucus

The pyrenoids are made up of

  • Proteinaceous centre and starchy sheath

  • Core of protein surrounded by fatty sheath

  • Core of starch surrounded by sheath of protein

  • Core of nucleic acid surrounded by protein sheath 

Consider the following features:

I. Chlorophyll a and Chlorophyll c

II. Fucoxanthin

III. Floridean starch

IV. Flagella 2 in number, unequal and lateral

Which of these are seen in Phaeophyceae?

  • I, II, III

  • I, II, IV

  • II, III, IV

  • I, II, III, IV

The endosperm of a gymnosperm develops _______ fertilization, whereas the endosperm of an angiosperm develops _________ fertilization.

  • before, before

  • after, after

  • after, before

  • before, after

In Pinus,

I. The stem is branched

II. Roots have fungal association in the form of mycorrhiza

III. The male and female strobili are borne on different trees

Of the above statements:

  • Only I is correct

  •  Only II is correct

  • Only I and II are correct

  • I, II and III are correct

Identify the incorrecty statement:

  • Numerical Taxonomy is based on all observable characteristics.

  • More weightage is given to reproductive characters and all other characters are given equal importance in numerical taxonomy.

  • Cytotaxonomy is based on cytological information like chromosome number, structure, behaviour

  • Chemotaxonomy uses the chemical constituents of the plant

Match each term with its definition and choose your answer from the codes given:

I.

Isogamy

1.

The union of two gametes

II.

Syngamy

2.

Two gametes, one larger than the other

III. 

Heterogamy  

3.  

Two kinds of gametes, one motile and other non motile

IV.

Anisogamy

4.

Two kinds of morphologically distinct gametes

V.

Oogamy

5.

Both gametes morphologically indistinguishable

Codes:

 

I  

II

III

IV

V

1.  

1     

2     

3     

4     

5   

2.

4

1

2

3

4 

3.

5

1

2

4

3

4.   

3

1

2

4

5

 
  • 1
  • 2
  • 3
  • 4
0:0:1


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Practice Botany Quiz Questions and Answers