Plant Kingdom

Cycas and Adiantum resemble each other in having

1. seeds
2. motile sperms
3. cambium
4. vessels

Selaginella and Salvinia are considered to represent a significant step toward evolution of seed habit because

1. female gametophyte is free and gets dispersed like seeds.
2. female gametophyte lacks archegonia.
3. megaspores possess endosperm and embryo surrounded by seed coat.
4. embryo develops in female gametophyte which is retained on parent sporophyte.

Consider the following four statements whether they are correct or wrong. The two wrong statements together are

1. A and C
2. A and D
3. B and C
4. A and B.

Examine the figure given below and select the correct option giving all the four parts (A, B, C and D) rightly identified. [Figure]

1. (A) Archegoniophore (B) Female thallus (C) Gemma cup (D) Rhizoids
2. (A) Antheridiophore (B) Male thallus (C) Globule (D) Roots
3. (A) Archegoniophore (B) Female thallus (C) Bud (D) Foot
4. (A) Seta (B) Sporophyte (C) Protonema (D) Rhizoids

The gametophyte is not an independent, free-living generation in

1. Polytrichum
2. Adiantum
3. Marchantia
4. Pinus

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

1. smaller but to have larger sex organs
2. larger but to have smaller sex organs
3. larger and to have larger sex organs
4. smaller and to have smaller sex organs

Archegoniophore is present in

1. Marchantia
2. Chara
3. Adiantum
4. Funaria

A prokaryotic autotrophic nitrogen fixing symbiont is found in

1. Alnus
2. Cycas
3. Cicer
4. Pisum

Examine the figures A, B, C and D. In which one of the four options all the items A, B, C and D are correct? [Figure]

1. (A) Funaria, (B) Adiantum, (C) Salvinia, (D) Riccia
2. (A) Equisetum, (B) Ginkgo, (C) Selaginella, (D) Lycopodium
3. (A) Chara, (B) Marchantia, (C) Fucus, (D) Pinus
4. (A) Selaginella, (B) Equisetum, (C) Salvinia, (D) Ginkgo

Examine the figures (A–D) given below and select the right option, in which all the four structures A, B, C and D are identified correctly. [Figure]

1. A Offset, B Antheridiophore, C Antipodals, D Oogonium
2. A Rhizome, B Sporangiophore, C Polar cell, D Globule
3. A Sucker, B Seta, C Megaspore mother cell, D Gemma cup
4. A Runner, B Archegoniophore, C Synergid, D Antheridium

Male and female gametophytes are independent and free-living in

1. mustard
2. castor
3. Pinus
4. Sphagnum

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

Spore dissemination in some liverworts is aided by

1. indusium
2. calyptra
3. peristome teeth
4. elaters

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

1. Zygnema, Saprolegnia and Hydrilla
2. Fucus, Marsilea and Calotropis
3. Riccia, Dryopteris and Cycas
4. Anthoceros, Funaria and Spirogyra

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

1. Nature of stored food materials in the cell
2. Structural organization of thallus
3. Chemical composition of the cell wall
4. Types of pigments present in the cell

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

1. there is high degree of sterility
2. one can conclude that the plant is apomictic
3. self fertilization is prevented
4. there is no change in success rate of fertilization

Peat moss is used as a packing material for sending flowers and live plants to distant places because

1. it serves as a disinfectant
2. it is easily available
3. it is hygroscopic
4. it reduces transpiration

Conifers differ from grasses in the

1. formation of endosperm before fertilization
2. production of seeds from ovules
3. lack of xylem tracheids
4. absence of pollen tubes

In a moss, the sporophyte

1. manufactures food for itself, as well as for the gametophyte
2. is partially parasitic on the gametophyte
3. produces gametes that give rise to the gametophyte
4. arises from a spore produced from the gametophyte

Ectophloic siphonostele is found in

1. Osmunda and Equisetum
2. Marsilea and Botrychium
3. Adiantum and Cucurbitaceae
4. Dicksonia and Maiden hair fern.

Top-shaped multiciliate male gametes and the mature seed which bears only one embryo with two cotyledons, are characterised features of

1. cycads
2. conifers
3. polypetalous angiosperms
4. gamopetalous angiosperms