Meiosis takes place in

  • Meiocyte

  • Conidia

  • Gemmule

  • Megaspore

Cycas and Adiantum resemble each other in having

  • seeds

  • motile sperms

  • cambium

  • vessels

Which one of the following is a correct statement?

  •  Pteridophyte gametophyte has a protonemal and leafy stage

  • In gymnosperms female gametophyte is free-living

  • Antheridiophores and archegoniophores are present in pteridophytes

  • Origin of seed habit can be traced in pteridophytes

Gymnosperms are also called soft wood spermatophytes because they lack

  • cambium

  • phloem fibres

  • thick-walled tracheids

  • xylem fibres

Compared with the gametophytes of the bryophytes, the gametophytes of vascular plants tends to be

  • larger but to have smaller sex organs

  • larger and to have large sex organs

  • smaller and to have smaller sex organs

  • smaller but to have larger sex organs

The gametophyte is not an independent, free living generation in

  • Adiantum

  • Marchantia

  • Pinus

  • Polytrichum

Archegoniophore is present in

  • Chara

  • Adiantum

  • Funaria

  • Marchantia

A prokaryotic autotrophic nitrogen fixing symbiont is found in

 

  • Cycas

  • Cicer

  • Pisum

  • Alnus

Male and female gametophytes are independent and free-living in

  • mustard

  • castor

  • Pinus

  • Sphagnum

Which one of the following  has haplontic life cycle?

  • Funaria

  • Polytrichum

  • Ustilago

  • Wheat

Phylogenetic system of classification is based on

  •  evolutionary relationships

  •  morphological features

  •  chemical constituents

  •  floral characters

Which one of the following is a vascular cryptogam?

  • Equisetum

  • Ginkgo

  • Marchantia

  • Cedrus

Which one of the following is considered important in the development of seed habit?

  • Dependent sporophyte

  • Heterospory

  • Haplontic life cycle

  • Free-living gametophyte

In which one of the following, the male and female gametophytes don't have free-living independent existence?

  • Pteris

  • Funaria

  • Polytrichum

  • Cedrus

Which one of the following is heterosporous?

  • Dryopteris

  • Salvinia

  • Adiantum

  • Equisetum

Select one of the following pairs of important features distinguishing Gnetum from Cycas and Pinus and showing affinities with angiosperms

  • absence of resin duct and leaf venation

  • presence of vessel elements and absence of archegonia

  • perianth and two integuments

  • embryo development and apical meristem

Flagellated male gametes are present in all the three of which one of the following sets?

  • Anthoceros, Funaria and Spirogyra

  • Zygnema, Saprolegnia and Hydrilla

  • Fucus, Marsilea and Calotropis

  • Riccia, Dryopteris and Cycas

In gymnosperms, the pollen chamber represents:

  • a cell in the pollen grain in which the sperms are formed

  • a cavity in the ovule in which pollen grains are stored after pollination

  • an opening in the megagametophyte through which the pollen tube approaches the egg

  • the microsporangium in which pollen grains develop

Spore dissemination in some liverworts is aided by:

  • elaters

  • indusium

  • calyptra

  • peristome teeth

If you are asked to classify the various algae into distinct groups, which of the following characters you should choose?

  • Types of pigments present in the cell

  • Nature of stored food materials in the cell

  • Structural organisation of thallus

  • Chemical composition of the cell wall

Moss peat is used as a packing material for sending flowers and live plants to distant places because:

  • it is easily available

  • it is hygroscopic

  • it reduces transpiration

  • it serves as a disinfectant

Conifers differ from grasses in the :

  • production of seeds from ovules

  • lack of xylem tracheids

  • absence of pollen tubes

  • formation of endosperm before fertilization

In a moss, the sporophyte:

  • is partially parasitic on the gametophyte

  • produces gametes that give rise to the gametophyte

  • arises from a spore produced from the gametophyte

  • manufactures food for itself, as well as for the gametophyte

In the prothallus of a vascular cryptogam, the antherozoids and eggs mature at different times. As a result:

  • there is no change in success rate of fertilization

  • there is high degree of sterility

  • one can conclude that the plant is apomictic

  • self fertilization is prevented

Male gametes are flagellated in

  • Polysiphonia

  • Anabaena

  • Ectocarpus

  • Spirogyra

The most primitive among the living vascular plants are the

  • ferns

  • brown algae

  • mosses

  • cycads

Non flowering plants are included under

  • cryptogamae

  • phanerogamae

  • angiosperms

  • Both a and b

Chlorophyll present in red algae is

  • a, d

  • a, b

  • a, c

  • b, c

Shape of chloroplast present in Ulothrix is

  • cup shaped

  • girdle shaped

  • star shaped

  • diffused type

This plant is used as a packing material and also forms an excellent fodder for feeding cattle.

  • Medicago

  • Pongamia

  • Cratolaria

  • All of these

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