In a tabulated form explain the differences in Chlorophycee, Phaeophyeae and Rhodophyceae giving pigments present stored food, cell wall, flagella and habitat

Consider the following statements regarding the major pigments and stored food in the different groups of algae and select the correct options given (A) In chlorophyceae the stored food material is starch and the major pigments are chlorophyll-a and d (B) In phaeopphyceae, laminarin is the stored food and major pigments are chlorophyll-a and b (C) In rhodophyceae, floridean starch is the stored food and the major pigments are chlorophyll-a, d and phycoeythrin.

Give differences between the following: Cell membrane and cell wall

In terms of cell wall structure and composition, explain the difference between Gram -ve and Gram +ve bacteria.

How many among among the given characteristics are true for th given organism ? (I) Store food in the form of starch . (II) The cell wall is composed of cellulose and align. (III) Major photosynthetic pigments are chlorophyll a , chlorophyll d and phycoerythrin. (IV) Biflagellate zoospores with two unequal laterally attached flagella. (VI) They are usually grass green in colour. (VII) These organisms range from simple branched forms as represented by kelps.

Archaea differ from bacteria in that they : (a) can form methanogen (b) have different rRNA sequences (c) do not have peptidoglycan in their cell walls (d) all of the above are correct

The main difference in Gram (+ve) and Gram (-ve) bacteria resides in their: (a) Cell wall (b) Cell membrane (c) Cytoplasm (d) Flagella

Read the following features for brown algae a- Presence of pigments Chlorophyll a and c. carotenoids and xanthophyll (fucoxanthin), b- Cell wall is composed of cellulose, pectin and hydrocolloids like carrageen. c- Gametes are pyriform with two laterally attached flagella d-Stored food may be in form of laminarin or mannitol d- Deepest dweller

Give one difference between the following pairs on the basis of what is given in brackets : Rods and Cones (Pigment present)

Which of the following are the characteristics of phaeophyceae ? (i) possess chlorophyll a,c carotenoids and xanthophylls. (ii) Food stored is in the from of laminarin and mannitol. (iii) Asexual reproduction by biflagellate zoospores that have two equal apically attached flagella. (iv) Cell wall has cellulose and algin. (v) sexual reproduction is oogamous only. (vi) Gametes have two laterally attached flagella.

Consider the following statements regarding mesosomes : a. It may be present in the form of vesicles, tubules and lamellae. b. It helps on cell wall secretion, cell respiration, DNA replication and cell division c. It increases the surface area of the cell wall and enzymatic content. d. It contains oxidative enzymes. which of the above statements are true ?