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Read the following features for brown al...

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

A

Five

B

Four

C

Three

D

Two

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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.

Which of the following statements about Phaeophyceae in incorrect? a. Vegetative reproduction occurs fragmentation. b. Asexual reproduction is by biflagellate pear-shaped zoospores. c. In sexual reproduction, gametes are pyriform and bear 2 laterally attached flagella. d. none of these

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.

Read the following statements :- (A) The vegetative cells have a cellulosic wall usually covered by coating of algin (B) Vegetative reproduction takes place by fragmentation (C) Sexual reproduction may be isogamous, anisogamous or oogamous (D) The gametes are pyriform (Pear shaped) and bear two laterally attached unequal flagella Which algal group represents these characteristics ?

Consider the following statement and select correct set for brown algae as well as red algae. (i) Certain marine forms produce large amonts of hydrocolloids. (ii) Used as food supplements by space travellers. (iii) Organisms may have unicellular and multicellular plant body. (iv) They have cellulose in cell wall and chlorophyll a pigment.

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.

Read the following statements and choose the correct ones. A. Carotenoids protect chlorophyll a from photo-oxidation. B. Dark reactions are not directly light driven. C. Chlorophyll a molecule shows maximum absorption in red and blue regions of the visible spectrum of light. D. Light harvesting complexes are composed of hundreds of pigment molecules bound to lipids only

How many of the given characters are associated with brown algae (Laminarin, Sulphated phycocolloids, Apical flagella, Fucoxanthin, Heterokont flagellation, chlorophyll c, Carotenoids, Pear-shaped zoospores, Oogonium, Pyriform gametes, Most complex post- fertilization development)

The diagram shows the structure of a fungal cell with different parts labelled as A,B,C and D. Which of the following statements are true with regard to the fungal cell structive? (i) A contains mucopolysaccharides which are also present in exoskeleton of insects and crustaceans. (ii) D are usually more than one in number in case of aseptate hyphae. (iii) Carotenes and xanthophylls are present in C, which harvest light energy for photosynthesis. (iv) B is the reverse food material, usually stored in the form of starch and oil.

Read the following statements carefully - (A) The lipid component of the plasma membrane mainly consists of phosphoglycerides. (B) Polar molecules can pass through the lipid bilayer of the plasma membrane, therefore they do not require carrier proteins to facilitate their transport. (C ) The secondary wall is capable of growth and it is formed on the outer side of the primary wall. (D) Quasifluid nature of lipid enables the lateral movement of proteins within the overall lipid bilayer of the plasma membrane. (E) Middle lamella glues the different neighbouring cells together. How many statements are incorrect?

AAKASH INSTITUTE ENGLISH-TEST 7-Exercise
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  4. Select the wrong statement.

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  14. Which of the following layer of cell wall is capable of growth and gra...

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