Plant Kingdom

Phylogenetic system of classification is based on

1. morphological features
2. chemical constituents
3. floral characters
4. evolutionary relationships

Which one of the following is a vascular cryptogam?

1. Ginkgo
2. Marchantia
3. Cedrus
4. Equisetum

Mannitol is the stored food in

1. Porphyra
2. Fucus
3. Gracilaria
4. Chara

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

1. Heterospory
2. Haplontic life cycle
3. Free-living gametophyte
4. Dependent sporophyte

Which one of the following has haplontic life cycle?

1. Polytrichum
2. Ustilago
3. Wheat
4. Funaria

Which one of the following plants is monoecious?

1. Pinus
2. Cycas
3. Papaya
4. Marchantia

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

1. Perianth and two integuments
2. Embryo development and apical meristem
3. Absence of resin duct and leaf venation
4. Presence of vessel elements and absence of archegonia

In which one of the following male and female gametophytes do not have free living independent existence?

1. Polytrichum
2. Cedrus
3. Pteris
4. Funaria

Which one of the following is heterosporous?

1. Adiantum
2. Equisetum
3. Dryopteris
4. Salvinia

In gymnosperms, the pollen chamber represents

1. a cavity in the ovule in which pollen grains are stored after pollination
2. an opening in the megagametophyte through which the pollen tube approaches the egg
3. the microsporangium in which pollen grains develop
4. a cell in the pollen grain in which the sperms are formed