In Cycas, the archegonia are formed from the gametophytic cells lining the archegonial chamber. The number of archegonia formed in a gametophyte is variable, e.g, 3-8 in Cycas revoluta, 3-6 in Cycas rumphi and 3-8 in Cycas circinalis.
JCECE-2008
Plant kingdom
259559
Water is not necessary for the fertilization of :
1 algae
2 bryophyta
3 Cycas
4 none of these
Explanation:
Cycas is a gymnospermic plant. Gymnosperms don't require water for fertilization because these are terrestrial plants. The movement of pollen grains from male reproductive part to the female reproductive part (ovules) mainly occurs by the air or with the help of biotic pollinators.
MGIMS Wardha-2012
Plant kingdom
259560
The coralloid root of Cycas has Anabaena (BGA), this type of association is called
1 commensalism
2 parasitic
3 symbiotic
4 antibiosis
Explanation:
The coralloid roots of Cycas has Anabaena, this type of association is called symbiotic relationship. In symbiosis, both the organisms in association is obligatory. The blue-green algae Anabaena reside in coralloid roots of Cycas for nitrogen fixation.
UP CPMT-2012
Plant kingdom
259562
Which one of the following plants is monoecious?
1 Papaya
2 Marchantia
3 Pinus
4 Cycas
Explanation:
The term monoecious refers to plants that bears unisexual reproductive organs on the same plant. This feature can be found in Pinus. Plants that have reproductive organs, both female and male, or flowers called monoecious plants. These male and female sections are situated at various plant location.
In Cycas, the archegonia are formed from the gametophytic cells lining the archegonial chamber. The number of archegonia formed in a gametophyte is variable, e.g, 3-8 in Cycas revoluta, 3-6 in Cycas rumphi and 3-8 in Cycas circinalis.
JCECE-2008
Plant kingdom
259559
Water is not necessary for the fertilization of :
1 algae
2 bryophyta
3 Cycas
4 none of these
Explanation:
Cycas is a gymnospermic plant. Gymnosperms don't require water for fertilization because these are terrestrial plants. The movement of pollen grains from male reproductive part to the female reproductive part (ovules) mainly occurs by the air or with the help of biotic pollinators.
MGIMS Wardha-2012
Plant kingdom
259560
The coralloid root of Cycas has Anabaena (BGA), this type of association is called
1 commensalism
2 parasitic
3 symbiotic
4 antibiosis
Explanation:
The coralloid roots of Cycas has Anabaena, this type of association is called symbiotic relationship. In symbiosis, both the organisms in association is obligatory. The blue-green algae Anabaena reside in coralloid roots of Cycas for nitrogen fixation.
UP CPMT-2012
Plant kingdom
259562
Which one of the following plants is monoecious?
1 Papaya
2 Marchantia
3 Pinus
4 Cycas
Explanation:
The term monoecious refers to plants that bears unisexual reproductive organs on the same plant. This feature can be found in Pinus. Plants that have reproductive organs, both female and male, or flowers called monoecious plants. These male and female sections are situated at various plant location.
In Cycas, the archegonia are formed from the gametophytic cells lining the archegonial chamber. The number of archegonia formed in a gametophyte is variable, e.g, 3-8 in Cycas revoluta, 3-6 in Cycas rumphi and 3-8 in Cycas circinalis.
JCECE-2008
Plant kingdom
259559
Water is not necessary for the fertilization of :
1 algae
2 bryophyta
3 Cycas
4 none of these
Explanation:
Cycas is a gymnospermic plant. Gymnosperms don't require water for fertilization because these are terrestrial plants. The movement of pollen grains from male reproductive part to the female reproductive part (ovules) mainly occurs by the air or with the help of biotic pollinators.
MGIMS Wardha-2012
Plant kingdom
259560
The coralloid root of Cycas has Anabaena (BGA), this type of association is called
1 commensalism
2 parasitic
3 symbiotic
4 antibiosis
Explanation:
The coralloid roots of Cycas has Anabaena, this type of association is called symbiotic relationship. In symbiosis, both the organisms in association is obligatory. The blue-green algae Anabaena reside in coralloid roots of Cycas for nitrogen fixation.
UP CPMT-2012
Plant kingdom
259562
Which one of the following plants is monoecious?
1 Papaya
2 Marchantia
3 Pinus
4 Cycas
Explanation:
The term monoecious refers to plants that bears unisexual reproductive organs on the same plant. This feature can be found in Pinus. Plants that have reproductive organs, both female and male, or flowers called monoecious plants. These male and female sections are situated at various plant location.
In Cycas, the archegonia are formed from the gametophytic cells lining the archegonial chamber. The number of archegonia formed in a gametophyte is variable, e.g, 3-8 in Cycas revoluta, 3-6 in Cycas rumphi and 3-8 in Cycas circinalis.
JCECE-2008
Plant kingdom
259559
Water is not necessary for the fertilization of :
1 algae
2 bryophyta
3 Cycas
4 none of these
Explanation:
Cycas is a gymnospermic plant. Gymnosperms don't require water for fertilization because these are terrestrial plants. The movement of pollen grains from male reproductive part to the female reproductive part (ovules) mainly occurs by the air or with the help of biotic pollinators.
MGIMS Wardha-2012
Plant kingdom
259560
The coralloid root of Cycas has Anabaena (BGA), this type of association is called
1 commensalism
2 parasitic
3 symbiotic
4 antibiosis
Explanation:
The coralloid roots of Cycas has Anabaena, this type of association is called symbiotic relationship. In symbiosis, both the organisms in association is obligatory. The blue-green algae Anabaena reside in coralloid roots of Cycas for nitrogen fixation.
UP CPMT-2012
Plant kingdom
259562
Which one of the following plants is monoecious?
1 Papaya
2 Marchantia
3 Pinus
4 Cycas
Explanation:
The term monoecious refers to plants that bears unisexual reproductive organs on the same plant. This feature can be found in Pinus. Plants that have reproductive organs, both female and male, or flowers called monoecious plants. These male and female sections are situated at various plant location.
