Agar-agar is obtained from red algae for ex. Gelidium, Gracilaria and Eucheuma.
2011
Plant kingdom
259235
Algae have cell wall made up of -
1 Cellulose, galactose and mannose
2 Hemicellulose, pectins and proteins
3 Pectins, cellulose and proteins
4 Cellulose, hemicellulose and pectins
Explanation:
Algae include in kingdom plant cell wall is composed by cellulose, hemicellulose and pectins but the cell wall of blue green algae (cyanobacteria) is composed by peptidoglycan which is a prokaryotes placed under the kingdom Monera.
AIPMT (Screening)-2010
Plant kingdom
259139
Zygote of Spirogyra produces four haploid nuclei, in which :
1 one is functional
2 two are functional
3 three are functional
4 all are functional
Explanation:
The zygospore is the union of the protoplasmic mass of two gametes which is called zygote (zygospore). Zygospores are the only diploid stage in the life cycle of spirogyra. The diploid zygospore nucleus undergoes meiosis and forms 4 nuclei three of these aborts and only one is functional prior to germination. It undergoes transverse division to give, rise single filament.
Uttarakhand PMT-2004
Plant kingdom
259141
Which of the following is an algal parasite?
1 Volvox
2 Ulothrix
3 Porphyra
4 Cephaleuros
Explanation:
Cephaleuros is a parasitic because being green algae it grows on other plants for providing support, but as long as it resides on another plant, during favorable conditions it behaves as parasitic. It is a genus of parasitic thalloid green algae comprising approximately 14 species. It infects plants and causes red rust disease.
Agar-agar is obtained from red algae for ex. Gelidium, Gracilaria and Eucheuma.
2011
Plant kingdom
259235
Algae have cell wall made up of -
1 Cellulose, galactose and mannose
2 Hemicellulose, pectins and proteins
3 Pectins, cellulose and proteins
4 Cellulose, hemicellulose and pectins
Explanation:
Algae include in kingdom plant cell wall is composed by cellulose, hemicellulose and pectins but the cell wall of blue green algae (cyanobacteria) is composed by peptidoglycan which is a prokaryotes placed under the kingdom Monera.
AIPMT (Screening)-2010
Plant kingdom
259139
Zygote of Spirogyra produces four haploid nuclei, in which :
1 one is functional
2 two are functional
3 three are functional
4 all are functional
Explanation:
The zygospore is the union of the protoplasmic mass of two gametes which is called zygote (zygospore). Zygospores are the only diploid stage in the life cycle of spirogyra. The diploid zygospore nucleus undergoes meiosis and forms 4 nuclei three of these aborts and only one is functional prior to germination. It undergoes transverse division to give, rise single filament.
Uttarakhand PMT-2004
Plant kingdom
259141
Which of the following is an algal parasite?
1 Volvox
2 Ulothrix
3 Porphyra
4 Cephaleuros
Explanation:
Cephaleuros is a parasitic because being green algae it grows on other plants for providing support, but as long as it resides on another plant, during favorable conditions it behaves as parasitic. It is a genus of parasitic thalloid green algae comprising approximately 14 species. It infects plants and causes red rust disease.
Agar-agar is obtained from red algae for ex. Gelidium, Gracilaria and Eucheuma.
2011
Plant kingdom
259235
Algae have cell wall made up of -
1 Cellulose, galactose and mannose
2 Hemicellulose, pectins and proteins
3 Pectins, cellulose and proteins
4 Cellulose, hemicellulose and pectins
Explanation:
Algae include in kingdom plant cell wall is composed by cellulose, hemicellulose and pectins but the cell wall of blue green algae (cyanobacteria) is composed by peptidoglycan which is a prokaryotes placed under the kingdom Monera.
AIPMT (Screening)-2010
Plant kingdom
259139
Zygote of Spirogyra produces four haploid nuclei, in which :
1 one is functional
2 two are functional
3 three are functional
4 all are functional
Explanation:
The zygospore is the union of the protoplasmic mass of two gametes which is called zygote (zygospore). Zygospores are the only diploid stage in the life cycle of spirogyra. The diploid zygospore nucleus undergoes meiosis and forms 4 nuclei three of these aborts and only one is functional prior to germination. It undergoes transverse division to give, rise single filament.
Uttarakhand PMT-2004
Plant kingdom
259141
Which of the following is an algal parasite?
1 Volvox
2 Ulothrix
3 Porphyra
4 Cephaleuros
Explanation:
Cephaleuros is a parasitic because being green algae it grows on other plants for providing support, but as long as it resides on another plant, during favorable conditions it behaves as parasitic. It is a genus of parasitic thalloid green algae comprising approximately 14 species. It infects plants and causes red rust disease.
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Plant kingdom
259137
Agar-agar is obtained from:
1 green algae
2 blue-green algae
3 red algae
4 brown algae
Explanation:
Agar-agar is obtained from red algae for ex. Gelidium, Gracilaria and Eucheuma.
2011
Plant kingdom
259235
Algae have cell wall made up of -
1 Cellulose, galactose and mannose
2 Hemicellulose, pectins and proteins
3 Pectins, cellulose and proteins
4 Cellulose, hemicellulose and pectins
Explanation:
Algae include in kingdom plant cell wall is composed by cellulose, hemicellulose and pectins but the cell wall of blue green algae (cyanobacteria) is composed by peptidoglycan which is a prokaryotes placed under the kingdom Monera.
AIPMT (Screening)-2010
Plant kingdom
259139
Zygote of Spirogyra produces four haploid nuclei, in which :
1 one is functional
2 two are functional
3 three are functional
4 all are functional
Explanation:
The zygospore is the union of the protoplasmic mass of two gametes which is called zygote (zygospore). Zygospores are the only diploid stage in the life cycle of spirogyra. The diploid zygospore nucleus undergoes meiosis and forms 4 nuclei three of these aborts and only one is functional prior to germination. It undergoes transverse division to give, rise single filament.
Uttarakhand PMT-2004
Plant kingdom
259141
Which of the following is an algal parasite?
1 Volvox
2 Ulothrix
3 Porphyra
4 Cephaleuros
Explanation:
Cephaleuros is a parasitic because being green algae it grows on other plants for providing support, but as long as it resides on another plant, during favorable conditions it behaves as parasitic. It is a genus of parasitic thalloid green algae comprising approximately 14 species. It infects plants and causes red rust disease.
