Plant Kingdom

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.

Plants reproducing by spores such as mosses and ferns are grouped under the general term

1. cryptogams
2. bryophytes
3. sporophytes
4. thallophytes.

Which one pair of examples will correctly represent the grouping spermatophyta according to one of the schemes of classifying plants?

1. Acacia, sugarcane
2. Pinus, Cycas
3. Rhizopus, Triticum
4. Ginkgo, Pisum

Which one of the following is categorised under living fossils ?

1. Cycas
2. Metasequoia
3. Pinus
4. Selaginella