Identify the incorrect statement regarding green algae?
1. They contain chl a, chl b as well as carotenoids.
2. The chloroplasts may be discoid, plate-like, reticulate, cup-shaped, spiral or ribbon-shaped in different species.
3. Most members have one or more storage bodies called pyrenoids located outside the chloroplasts.
4. They usually have a rigid cell wall made of an inner layer of cellulose and an outer layer of pectose.
Which pair[s] is/are in incorrectly matched?
I. Phaeophyceae - Algin in cell wall
II. Chlorophyceae - Laminarin is stored food
III. Rhodophyceae - 2, unequal, lateral flagella
(1) Only II
(2) Only III
(3) I and II only
(4) II and III only
In the given diagrams, some of the algae have been labelled as A, B, C, D and E. Choose the correct option to identify these algae.
| A | B | C | D | E | |
| 1. | Dictyota | Polysiphonia | Porphyra | Fucus | Laminaria |
| 2. | Porphyra | Dictyota | Laminaria | Fucus | Polyspiphonia |
| 3. | Dictyota | Polysiphonia | Porphyra | Laminaria | Fucus |
| 4. | Fucus | Porphyra | Dictyota | Polysiphonia | Laminaria |
Chloroplasts can be discoid, plate-like, reticulate, cup-shaped, spiral or ribbon-shaped in different species. Such variety can be found in
(1) Chlorophyceae
(2) Phaeophyceae
(3) Rhodophyceae
(4) All of these
Pyrenoid is
(1) Storage bodies located in cytoplasm of chloropbyceae
(2) Storage bodies located in cytoplasm of Phaeophyceae
(3) Storage bodies located in chloroplast of chlorophyceae
(4) Storage bodies located in chloroplast of Phaeophyceae
Green algae usually have a rigid cell wall made of an inner layer of ….…. and outer layer of ………
(1) Pectose, Cellulose
(2) Cellulose, Pectose
(3) Algin, carrageenan
(4) Carrageen, Algin
Examples of Green alga is not
(1) Chlamydomonas,Volvox,Ulothrix
(2) Spirogyra
(3) Chara
(4) Fucus
Vegetative reproduction in chlorophyceae takes place by
(1) Fragmentation+ spore formation
(2) Only spore formation
(3) Only Fragmentation
(4) Isogamous
Asexual reproduction in chlorophyceae is by
(1) Zoospore formation in Antheriodiophore
(2) Fragmentation
(3) Zoospore formation in Zoosporangia
(4) Both 1 and 2
Zoospore formed during asexual reproduction in chlorophyceae are
(1) Flagellated
(2) Non-flagellated
(3) Ciliated
(4) Non ciliated
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