Question

50 Protists 46) Word Bank phycoerythrin or chlorophyll. may be red or green, depending on the presence of algae apicomplexans 47) diatoms unicellular algae with a wall made up of hydrated silica; component of phytoplankton. dinoflagellates diplomonads 48) group of aquatic mixotrophs and heterotrophs with a Girardia characteristic shape reinforced by cellulose plates; cause of toxic "red tides". Oomycetes Plasmodium 49) anaerobic, lack plastids, and have mitosomes; two equal Trichomonas nuclei and multiple flagella Trypanosomes 50) animal parasites with sexual and asexual stages requiring two or more host species. 51) Parabasalid pathogen that causes yeast infections in humans 52) Stramenopilia water mold that causes "ich" in fish 53) sickness _Kinetoplastid parasite of "kissing bugs" or tsetse flies that causes Chagas or sleeping 54) _Diplomonad intestinal parasite, contaminates water and food with infective cysts 55) Apicomplexan parasite that causes malaria

Answer 1

Ans) 1. Algae.

Red algae is red in colour because of pigment called phycoerythin which is also known as mask chlorophyll are multicellular and.mode.of reproduction is sexual. Green algae is of two types chlorophytes and charophtes. Chlorophytes are those plants which have chloroplast in them and charophtes are the plants which ressembles to the plants of land.

2. Diatoms.

It is an algae which is unicellular , wall is made up of silica and can tolerate high pressure and the mode of reproduction is both i.e. asexual and sexual.

3. Dinoflagellates.

It is a group of distinct mixotrophs as well as heterotrophs which are aquatic in nature. The characteristic of each dinoflagellates is due to internal plate of cellulose. In water , two flagella helps to spin. Toxic red tides occurs due to dinoflagellates blooming.

4. Diplomonads.

These are the organism which contains modified Mitochondria but plastids is absent. This survival anaerobic environmental conditions. They obtain energy from the anaerobic pathway.

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