Plant Kingdom

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

Chlorenchyma is known to develop in the :

1. Mycelium of a green mould such as Aspergillus
2. Pollen tube of Pinus
3. Cytoplasm of Chlorella
4. Spore capsule of a moss

Which of the following is without exception in angiosperms?

1. Presence of vessels
2. Double fertilisation
3. Secondary growth
4. Autotrophic nutrition