Plant Kingdom Test - 5

The characteristics of algae are given below:

1. Algae are chlorophyll bearing simple organisms

2. Algae have a thalloid structure.

3. The mode of nutrition for algae is Autotrophic.

4. They reproduce by vegetative, asexual and sexual methods.

5. They are largely aquatic organism but also occur in other habitats like moist stone, soil and wood.

The fusion of two gametes of similar size is called isogamous.

The fusion of two gametes dissimilar of size as in some species of Chlamydomonas is termed as anisogamous.

The fusion between one large, non-motile female gamete and a smaller motile male gamete is termed as oogamous.

Chlorella a unicellular alga, rich in proteins is used as food supplement even by space travellers.

Agar is one of the commercial l products obtained from Gelidium and Gracilaria are used to grow microbes and in preparations of ice-creams and jellies.

Chlamydomonas, Volvox are examples of green algae helps in carbon dioxide fixation through photosynthesis.

The standardise naming of living organisms such that a particular organism is known by the same name all over the world is called nomenclature.

Biologists follow universally accepted principles to provide scientific names to known organisms. Each name has two components – the Generic name and the specific epithet. This system of providing a name with two components is called Binomial nomenclature.

In 1735, Carl Linnaeus gave the binomial nomenclature in the thesis” Systema Nature”.

The scientific name for the group of one or more population of an organism used in classification is taxa.

The process of classification of all living organisms into different taxa is called taxonomy