Cycas has dominant diploid sporophyte phase in its life cycle. The male gametes (spermatozoids) of cycas \& ginkgo are unique among all seeds plants. It is multiflagellate and very large. In cycas revoluta the size of the sperm ranges between $180-210 \mu \mathrm{m}$ and clearly visible to the naked eye.
JCECE-2006
Plant kingdom
259533
In Cycas, diploxylic condition is found in-
1 stem
2 root
3 coralloid root
4 leaflet
Explanation:
Leaflet of Cycas is diploxylic i.e., two type of xylem are present such as centripetal xylem which is exarch and centrifugal xylem which is endarch.
Uttarakhand PMT-2010
Plant kingdom
259535
Seeds of Pinus have:
1 two cotyledons
2 three cotyledons
3 many cotyledons
4 one cotyledons
Explanation:
Pinus is Gymnospermic plant. It is include medium sized tree or tall tree and shrub. The mature seeds of Pinus is composed of hard testa, thin tegmen, endosperm, embryo and caplike perisperm. The embryo indudes a short-axis bearing ten cotyledons. Thus, Pinus has many cotyledons.
JIPMER-1996
Plant kingdom
259536
In Pinus, male and female reproductive structures occur?
1 On different branches of the same plant
2 On different plants
3 On same branch
4 None of the above
Explanation:
Pinus is a monoecious plant with male \& female cones on the same tree. But the male and female reproductive structures occurs on various branches of the same plant. The female cones are typically larger on a pinus tree. They are situated at the top of the tree branches. The male cone on the lower branches are smaller in size.
CG PMT-2005
Plant kingdom
259568
Which statement is wrong for Cycas :
1 Xylem have vessels
2 Female flowers well developed
3 It has coralloid roots
4 Circinate ptyxis
Explanation:
Cycas belongs to the family cycadaceae like other gymnosperms, have xylem and phloem along with true leaves, stem and roots. The vessels are absent in the xylem tissue of cycas. So, xylem have vessels is a wrong statement for cycas.
Cycas has dominant diploid sporophyte phase in its life cycle. The male gametes (spermatozoids) of cycas \& ginkgo are unique among all seeds plants. It is multiflagellate and very large. In cycas revoluta the size of the sperm ranges between $180-210 \mu \mathrm{m}$ and clearly visible to the naked eye.
JCECE-2006
Plant kingdom
259533
In Cycas, diploxylic condition is found in-
1 stem
2 root
3 coralloid root
4 leaflet
Explanation:
Leaflet of Cycas is diploxylic i.e., two type of xylem are present such as centripetal xylem which is exarch and centrifugal xylem which is endarch.
Uttarakhand PMT-2010
Plant kingdom
259535
Seeds of Pinus have:
1 two cotyledons
2 three cotyledons
3 many cotyledons
4 one cotyledons
Explanation:
Pinus is Gymnospermic plant. It is include medium sized tree or tall tree and shrub. The mature seeds of Pinus is composed of hard testa, thin tegmen, endosperm, embryo and caplike perisperm. The embryo indudes a short-axis bearing ten cotyledons. Thus, Pinus has many cotyledons.
JIPMER-1996
Plant kingdom
259536
In Pinus, male and female reproductive structures occur?
1 On different branches of the same plant
2 On different plants
3 On same branch
4 None of the above
Explanation:
Pinus is a monoecious plant with male \& female cones on the same tree. But the male and female reproductive structures occurs on various branches of the same plant. The female cones are typically larger on a pinus tree. They are situated at the top of the tree branches. The male cone on the lower branches are smaller in size.
CG PMT-2005
Plant kingdom
259568
Which statement is wrong for Cycas :
1 Xylem have vessels
2 Female flowers well developed
3 It has coralloid roots
4 Circinate ptyxis
Explanation:
Cycas belongs to the family cycadaceae like other gymnosperms, have xylem and phloem along with true leaves, stem and roots. The vessels are absent in the xylem tissue of cycas. So, xylem have vessels is a wrong statement for cycas.
Cycas has dominant diploid sporophyte phase in its life cycle. The male gametes (spermatozoids) of cycas \& ginkgo are unique among all seeds plants. It is multiflagellate and very large. In cycas revoluta the size of the sperm ranges between $180-210 \mu \mathrm{m}$ and clearly visible to the naked eye.
JCECE-2006
Plant kingdom
259533
In Cycas, diploxylic condition is found in-
1 stem
2 root
3 coralloid root
4 leaflet
Explanation:
Leaflet of Cycas is diploxylic i.e., two type of xylem are present such as centripetal xylem which is exarch and centrifugal xylem which is endarch.
Uttarakhand PMT-2010
Plant kingdom
259535
Seeds of Pinus have:
1 two cotyledons
2 three cotyledons
3 many cotyledons
4 one cotyledons
Explanation:
Pinus is Gymnospermic plant. It is include medium sized tree or tall tree and shrub. The mature seeds of Pinus is composed of hard testa, thin tegmen, endosperm, embryo and caplike perisperm. The embryo indudes a short-axis bearing ten cotyledons. Thus, Pinus has many cotyledons.
JIPMER-1996
Plant kingdom
259536
In Pinus, male and female reproductive structures occur?
1 On different branches of the same plant
2 On different plants
3 On same branch
4 None of the above
Explanation:
Pinus is a monoecious plant with male \& female cones on the same tree. But the male and female reproductive structures occurs on various branches of the same plant. The female cones are typically larger on a pinus tree. They are situated at the top of the tree branches. The male cone on the lower branches are smaller in size.
CG PMT-2005
Plant kingdom
259568
Which statement is wrong for Cycas :
1 Xylem have vessels
2 Female flowers well developed
3 It has coralloid roots
4 Circinate ptyxis
Explanation:
Cycas belongs to the family cycadaceae like other gymnosperms, have xylem and phloem along with true leaves, stem and roots. The vessels are absent in the xylem tissue of cycas. So, xylem have vessels is a wrong statement for cycas.
Cycas has dominant diploid sporophyte phase in its life cycle. The male gametes (spermatozoids) of cycas \& ginkgo are unique among all seeds plants. It is multiflagellate and very large. In cycas revoluta the size of the sperm ranges between $180-210 \mu \mathrm{m}$ and clearly visible to the naked eye.
JCECE-2006
Plant kingdom
259533
In Cycas, diploxylic condition is found in-
1 stem
2 root
3 coralloid root
4 leaflet
Explanation:
Leaflet of Cycas is diploxylic i.e., two type of xylem are present such as centripetal xylem which is exarch and centrifugal xylem which is endarch.
Uttarakhand PMT-2010
Plant kingdom
259535
Seeds of Pinus have:
1 two cotyledons
2 three cotyledons
3 many cotyledons
4 one cotyledons
Explanation:
Pinus is Gymnospermic plant. It is include medium sized tree or tall tree and shrub. The mature seeds of Pinus is composed of hard testa, thin tegmen, endosperm, embryo and caplike perisperm. The embryo indudes a short-axis bearing ten cotyledons. Thus, Pinus has many cotyledons.
JIPMER-1996
Plant kingdom
259536
In Pinus, male and female reproductive structures occur?
1 On different branches of the same plant
2 On different plants
3 On same branch
4 None of the above
Explanation:
Pinus is a monoecious plant with male \& female cones on the same tree. But the male and female reproductive structures occurs on various branches of the same plant. The female cones are typically larger on a pinus tree. They are situated at the top of the tree branches. The male cone on the lower branches are smaller in size.
CG PMT-2005
Plant kingdom
259568
Which statement is wrong for Cycas :
1 Xylem have vessels
2 Female flowers well developed
3 It has coralloid roots
4 Circinate ptyxis
Explanation:
Cycas belongs to the family cycadaceae like other gymnosperms, have xylem and phloem along with true leaves, stem and roots. The vessels are absent in the xylem tissue of cycas. So, xylem have vessels is a wrong statement for cycas.
Cycas has dominant diploid sporophyte phase in its life cycle. The male gametes (spermatozoids) of cycas \& ginkgo are unique among all seeds plants. It is multiflagellate and very large. In cycas revoluta the size of the sperm ranges between $180-210 \mu \mathrm{m}$ and clearly visible to the naked eye.
JCECE-2006
Plant kingdom
259533
In Cycas, diploxylic condition is found in-
1 stem
2 root
3 coralloid root
4 leaflet
Explanation:
Leaflet of Cycas is diploxylic i.e., two type of xylem are present such as centripetal xylem which is exarch and centrifugal xylem which is endarch.
Uttarakhand PMT-2010
Plant kingdom
259535
Seeds of Pinus have:
1 two cotyledons
2 three cotyledons
3 many cotyledons
4 one cotyledons
Explanation:
Pinus is Gymnospermic plant. It is include medium sized tree or tall tree and shrub. The mature seeds of Pinus is composed of hard testa, thin tegmen, endosperm, embryo and caplike perisperm. The embryo indudes a short-axis bearing ten cotyledons. Thus, Pinus has many cotyledons.
JIPMER-1996
Plant kingdom
259536
In Pinus, male and female reproductive structures occur?
1 On different branches of the same plant
2 On different plants
3 On same branch
4 None of the above
Explanation:
Pinus is a monoecious plant with male \& female cones on the same tree. But the male and female reproductive structures occurs on various branches of the same plant. The female cones are typically larger on a pinus tree. They are situated at the top of the tree branches. The male cone on the lower branches are smaller in size.
CG PMT-2005
Plant kingdom
259568
Which statement is wrong for Cycas :
1 Xylem have vessels
2 Female flowers well developed
3 It has coralloid roots
4 Circinate ptyxis
Explanation:
Cycas belongs to the family cycadaceae like other gymnosperms, have xylem and phloem along with true leaves, stem and roots. The vessels are absent in the xylem tissue of cycas. So, xylem have vessels is a wrong statement for cycas.
