Plant Kingdom

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

Phenetic classification of organisms is based on

1. observable characteristics of existing organisms
2. the ancestral lineage of existing organisms
3. dendrogram based on DNA characteristics
4. sexual characteristics

Angiosperms have dominated the land flora primarily because of their

1. power of adaptability in diverse habitat
2. property of producing large number of seeds
3. nature of self pollination
4. domestication by man

Which one of the following is living fossil ?

1. Cycas
2. Moss
3. Spirogyra
4. Saccharomyces

Phenetic classification of organisms is based on

1. observable characteristics of existing organisms
2. the ancestral lineage of existing organisms
3. dendrogram based on DNA characteristics
4. sexual characteristics.

Which one of the following pairs of plants are not seed producers?

1. Fern and Funaria
2. Funaria and Ficus
3. Ficus and Chlamydomonas
4. Funaria and Pinus

Sexual reproduction in Spirogyra is an advanced feature because it shows

1. different sizes of motile sex organs
2. same size of motile sex organs
3. morphologically different sex organs
4. physiologically differentiated sex organs.