259203
Which of the following is a character of Rhodophyceae?
1 Flagellum is absent
2 Major pigments are chlorophyll $-\mathrm{a}$ and chlorophyll -b
3 Commonly called brown algae
4 Stored food materials are mannitol and laminarin
5 Cell wall contains cellulose and algin
Explanation:
Typically red algae reproduce vegetatively by fragmentation. They can reproduce sexually using nonmotile gametes and non-motile spores like monospores. Flagella are therefore not present in Rhodophyceae.
Kerala PMT-2012
Plant kingdom
259209
In which of the following, reticulate chloroplast is found?
1 Oedogonium
2 Spirogyra
3 Ectocarpus
4 Ulothrix
Explanation:
Reticulate chloroplast is found in oedogonium which belong to class chlorophyceae. The reticular chloroplast is a complex plastid that forms a cylindrical network in the peripheral region of the cells of some green algae. The green filamentous algae oedogenium has reticular chloroplasts that completely encircls the protoplast.
AIIMS-1995
Plant kingdom
259216
The pyrenoids are made up of
1 proteinaceous centre and starchy sheath
2 core of nucleic acid surrounded by protein sheath
3 core of protein surrounded by fatty sheath
4 core of starch surrounded by sheath of protein
Explanation:
Pyrenoids are tiny sub cellular compartments that can be found in the chloroplast of a variety of algae and land plants. Pyrenoids are linked to a process that concentrates carbon. Their major job is to create and maintain a $\mathrm{CO}_{2}$ rich environment around RubisCo so that they can operate as centers of $\mathrm{CO}_{2}$ fixation. Even when starch is produced in the cytosol as opposed to the chloroplast, a starch sheath is frequently generated or deposited at the edge of pyrenoids.
UPCPMT-2011
Plant kingdom
259218
Chloroplast of Chlamydomonas is
1 stellate
2 cup-shaped
3 collar-shaped
4 spiral
Explanation:
Chloroplast of chlamydomonas is cupshaped . Chlamydomonas cells are $\sim 10 \mu \mathrm{m}$ in diameter and about half of their volume is occupied by a single cup-shaped chloroplast where as, in spirogyra, the chloroplasts are spiral and ribbon like.
259203
Which of the following is a character of Rhodophyceae?
1 Flagellum is absent
2 Major pigments are chlorophyll $-\mathrm{a}$ and chlorophyll -b
3 Commonly called brown algae
4 Stored food materials are mannitol and laminarin
5 Cell wall contains cellulose and algin
Explanation:
Typically red algae reproduce vegetatively by fragmentation. They can reproduce sexually using nonmotile gametes and non-motile spores like monospores. Flagella are therefore not present in Rhodophyceae.
Kerala PMT-2012
Plant kingdom
259209
In which of the following, reticulate chloroplast is found?
1 Oedogonium
2 Spirogyra
3 Ectocarpus
4 Ulothrix
Explanation:
Reticulate chloroplast is found in oedogonium which belong to class chlorophyceae. The reticular chloroplast is a complex plastid that forms a cylindrical network in the peripheral region of the cells of some green algae. The green filamentous algae oedogenium has reticular chloroplasts that completely encircls the protoplast.
AIIMS-1995
Plant kingdom
259216
The pyrenoids are made up of
1 proteinaceous centre and starchy sheath
2 core of nucleic acid surrounded by protein sheath
3 core of protein surrounded by fatty sheath
4 core of starch surrounded by sheath of protein
Explanation:
Pyrenoids are tiny sub cellular compartments that can be found in the chloroplast of a variety of algae and land plants. Pyrenoids are linked to a process that concentrates carbon. Their major job is to create and maintain a $\mathrm{CO}_{2}$ rich environment around RubisCo so that they can operate as centers of $\mathrm{CO}_{2}$ fixation. Even when starch is produced in the cytosol as opposed to the chloroplast, a starch sheath is frequently generated or deposited at the edge of pyrenoids.
UPCPMT-2011
Plant kingdom
259218
Chloroplast of Chlamydomonas is
1 stellate
2 cup-shaped
3 collar-shaped
4 spiral
Explanation:
Chloroplast of chlamydomonas is cupshaped . Chlamydomonas cells are $\sim 10 \mu \mathrm{m}$ in diameter and about half of their volume is occupied by a single cup-shaped chloroplast where as, in spirogyra, the chloroplasts are spiral and ribbon like.
259203
Which of the following is a character of Rhodophyceae?
1 Flagellum is absent
2 Major pigments are chlorophyll $-\mathrm{a}$ and chlorophyll -b
3 Commonly called brown algae
4 Stored food materials are mannitol and laminarin
5 Cell wall contains cellulose and algin
Explanation:
Typically red algae reproduce vegetatively by fragmentation. They can reproduce sexually using nonmotile gametes and non-motile spores like monospores. Flagella are therefore not present in Rhodophyceae.
Kerala PMT-2012
Plant kingdom
259209
In which of the following, reticulate chloroplast is found?
1 Oedogonium
2 Spirogyra
3 Ectocarpus
4 Ulothrix
Explanation:
Reticulate chloroplast is found in oedogonium which belong to class chlorophyceae. The reticular chloroplast is a complex plastid that forms a cylindrical network in the peripheral region of the cells of some green algae. The green filamentous algae oedogenium has reticular chloroplasts that completely encircls the protoplast.
AIIMS-1995
Plant kingdom
259216
The pyrenoids are made up of
1 proteinaceous centre and starchy sheath
2 core of nucleic acid surrounded by protein sheath
3 core of protein surrounded by fatty sheath
4 core of starch surrounded by sheath of protein
Explanation:
Pyrenoids are tiny sub cellular compartments that can be found in the chloroplast of a variety of algae and land plants. Pyrenoids are linked to a process that concentrates carbon. Their major job is to create and maintain a $\mathrm{CO}_{2}$ rich environment around RubisCo so that they can operate as centers of $\mathrm{CO}_{2}$ fixation. Even when starch is produced in the cytosol as opposed to the chloroplast, a starch sheath is frequently generated or deposited at the edge of pyrenoids.
UPCPMT-2011
Plant kingdom
259218
Chloroplast of Chlamydomonas is
1 stellate
2 cup-shaped
3 collar-shaped
4 spiral
Explanation:
Chloroplast of chlamydomonas is cupshaped . Chlamydomonas cells are $\sim 10 \mu \mathrm{m}$ in diameter and about half of their volume is occupied by a single cup-shaped chloroplast where as, in spirogyra, the chloroplasts are spiral and ribbon like.
259203
Which of the following is a character of Rhodophyceae?
1 Flagellum is absent
2 Major pigments are chlorophyll $-\mathrm{a}$ and chlorophyll -b
3 Commonly called brown algae
4 Stored food materials are mannitol and laminarin
5 Cell wall contains cellulose and algin
Explanation:
Typically red algae reproduce vegetatively by fragmentation. They can reproduce sexually using nonmotile gametes and non-motile spores like monospores. Flagella are therefore not present in Rhodophyceae.
Kerala PMT-2012
Plant kingdom
259209
In which of the following, reticulate chloroplast is found?
1 Oedogonium
2 Spirogyra
3 Ectocarpus
4 Ulothrix
Explanation:
Reticulate chloroplast is found in oedogonium which belong to class chlorophyceae. The reticular chloroplast is a complex plastid that forms a cylindrical network in the peripheral region of the cells of some green algae. The green filamentous algae oedogenium has reticular chloroplasts that completely encircls the protoplast.
AIIMS-1995
Plant kingdom
259216
The pyrenoids are made up of
1 proteinaceous centre and starchy sheath
2 core of nucleic acid surrounded by protein sheath
3 core of protein surrounded by fatty sheath
4 core of starch surrounded by sheath of protein
Explanation:
Pyrenoids are tiny sub cellular compartments that can be found in the chloroplast of a variety of algae and land plants. Pyrenoids are linked to a process that concentrates carbon. Their major job is to create and maintain a $\mathrm{CO}_{2}$ rich environment around RubisCo so that they can operate as centers of $\mathrm{CO}_{2}$ fixation. Even when starch is produced in the cytosol as opposed to the chloroplast, a starch sheath is frequently generated or deposited at the edge of pyrenoids.
UPCPMT-2011
Plant kingdom
259218
Chloroplast of Chlamydomonas is
1 stellate
2 cup-shaped
3 collar-shaped
4 spiral
Explanation:
Chloroplast of chlamydomonas is cupshaped . Chlamydomonas cells are $\sim 10 \mu \mathrm{m}$ in diameter and about half of their volume is occupied by a single cup-shaped chloroplast where as, in spirogyra, the chloroplasts are spiral and ribbon like.
