259551
If Gnetum is not a flowering plant, it may be mistaken for a:
1 tree fem
2 monocot plant
3 dicot plant
4 none of these
Explanation:
Gnetum is easily mistaken for a dicot plant unless it is in flowering or fruiting stage. The plant body is differentiated into roots, stem and leaves. Gnetum resembles very much in its characteristics to an angiosperm than a gymnosperm. - Tree ferns are a large group of ferns with tree-like forms. - Monocots are grasses \& grass like flowering plants, the seeds of which typically contain only one embryonic leaf or cotyledon.
BVP-2006
Plant kingdom
259609
Which is haploid in case of Cycas?
1 Stem
2 Root
3 Endosperm
4 All the above
Explanation:
The lowermost functional megaspore becomes the embryo sac cell. It undergoes free nuclear divisions followed by wall formation to form the cellular endosperms, here the endosperm is formed before fertilization and is haploid. - Endosperm is a tissue produced inside the seeds of most flowering plants around the time of fertilization.
Uttarakhand-2005
Plant kingdom
259558
Which of the following is/are grouped under phanerogams?
1 Angiosperms
2 Gymnosperms
3 Pteridophytes
4 Both (a) and (b)
Explanation:
Gymnosperms and angiosperms are the two types of phanerogams, depending on whether the seeds are enclosed in a fruit or not. Phanerogams are vascular plants with separate leaf, stem and root systems. These plants have well differentiated reproductive tissues. - A pteridophyte is a vascular plant that disperses spores. They are sometimes referred to as "cryptogams" because they produce neither flowers nor seeds.
Rajasthan PMT-2008
Plant kingdom
259561
The chief water conducting elements of xylem in gymnosperms are :
1 Vessels
2 Fibres
3 Transfusion
4 Tracheids
Explanation:
In Gymnosperm water conduction occurs mainly through tracheids. - Gymnosperm is non flowering seed bearing plants. Vascular bundles are present in the gymnosperms but vessels are absent in the xylem and the phloem lacks the companion cell. Thus water conduction occurs mainly through tracheids.
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Plant kingdom
259551
If Gnetum is not a flowering plant, it may be mistaken for a:
1 tree fem
2 monocot plant
3 dicot plant
4 none of these
Explanation:
Gnetum is easily mistaken for a dicot plant unless it is in flowering or fruiting stage. The plant body is differentiated into roots, stem and leaves. Gnetum resembles very much in its characteristics to an angiosperm than a gymnosperm. - Tree ferns are a large group of ferns with tree-like forms. - Monocots are grasses \& grass like flowering plants, the seeds of which typically contain only one embryonic leaf or cotyledon.
BVP-2006
Plant kingdom
259609
Which is haploid in case of Cycas?
1 Stem
2 Root
3 Endosperm
4 All the above
Explanation:
The lowermost functional megaspore becomes the embryo sac cell. It undergoes free nuclear divisions followed by wall formation to form the cellular endosperms, here the endosperm is formed before fertilization and is haploid. - Endosperm is a tissue produced inside the seeds of most flowering plants around the time of fertilization.
Uttarakhand-2005
Plant kingdom
259558
Which of the following is/are grouped under phanerogams?
1 Angiosperms
2 Gymnosperms
3 Pteridophytes
4 Both (a) and (b)
Explanation:
Gymnosperms and angiosperms are the two types of phanerogams, depending on whether the seeds are enclosed in a fruit or not. Phanerogams are vascular plants with separate leaf, stem and root systems. These plants have well differentiated reproductive tissues. - A pteridophyte is a vascular plant that disperses spores. They are sometimes referred to as "cryptogams" because they produce neither flowers nor seeds.
Rajasthan PMT-2008
Plant kingdom
259561
The chief water conducting elements of xylem in gymnosperms are :
1 Vessels
2 Fibres
3 Transfusion
4 Tracheids
Explanation:
In Gymnosperm water conduction occurs mainly through tracheids. - Gymnosperm is non flowering seed bearing plants. Vascular bundles are present in the gymnosperms but vessels are absent in the xylem and the phloem lacks the companion cell. Thus water conduction occurs mainly through tracheids.
259551
If Gnetum is not a flowering plant, it may be mistaken for a:
1 tree fem
2 monocot plant
3 dicot plant
4 none of these
Explanation:
Gnetum is easily mistaken for a dicot plant unless it is in flowering or fruiting stage. The plant body is differentiated into roots, stem and leaves. Gnetum resembles very much in its characteristics to an angiosperm than a gymnosperm. - Tree ferns are a large group of ferns with tree-like forms. - Monocots are grasses \& grass like flowering plants, the seeds of which typically contain only one embryonic leaf or cotyledon.
BVP-2006
Plant kingdom
259609
Which is haploid in case of Cycas?
1 Stem
2 Root
3 Endosperm
4 All the above
Explanation:
The lowermost functional megaspore becomes the embryo sac cell. It undergoes free nuclear divisions followed by wall formation to form the cellular endosperms, here the endosperm is formed before fertilization and is haploid. - Endosperm is a tissue produced inside the seeds of most flowering plants around the time of fertilization.
Uttarakhand-2005
Plant kingdom
259558
Which of the following is/are grouped under phanerogams?
1 Angiosperms
2 Gymnosperms
3 Pteridophytes
4 Both (a) and (b)
Explanation:
Gymnosperms and angiosperms are the two types of phanerogams, depending on whether the seeds are enclosed in a fruit or not. Phanerogams are vascular plants with separate leaf, stem and root systems. These plants have well differentiated reproductive tissues. - A pteridophyte is a vascular plant that disperses spores. They are sometimes referred to as "cryptogams" because they produce neither flowers nor seeds.
Rajasthan PMT-2008
Plant kingdom
259561
The chief water conducting elements of xylem in gymnosperms are :
1 Vessels
2 Fibres
3 Transfusion
4 Tracheids
Explanation:
In Gymnosperm water conduction occurs mainly through tracheids. - Gymnosperm is non flowering seed bearing plants. Vascular bundles are present in the gymnosperms but vessels are absent in the xylem and the phloem lacks the companion cell. Thus water conduction occurs mainly through tracheids.
259551
If Gnetum is not a flowering plant, it may be mistaken for a:
1 tree fem
2 monocot plant
3 dicot plant
4 none of these
Explanation:
Gnetum is easily mistaken for a dicot plant unless it is in flowering or fruiting stage. The plant body is differentiated into roots, stem and leaves. Gnetum resembles very much in its characteristics to an angiosperm than a gymnosperm. - Tree ferns are a large group of ferns with tree-like forms. - Monocots are grasses \& grass like flowering plants, the seeds of which typically contain only one embryonic leaf or cotyledon.
BVP-2006
Plant kingdom
259609
Which is haploid in case of Cycas?
1 Stem
2 Root
3 Endosperm
4 All the above
Explanation:
The lowermost functional megaspore becomes the embryo sac cell. It undergoes free nuclear divisions followed by wall formation to form the cellular endosperms, here the endosperm is formed before fertilization and is haploid. - Endosperm is a tissue produced inside the seeds of most flowering plants around the time of fertilization.
Uttarakhand-2005
Plant kingdom
259558
Which of the following is/are grouped under phanerogams?
1 Angiosperms
2 Gymnosperms
3 Pteridophytes
4 Both (a) and (b)
Explanation:
Gymnosperms and angiosperms are the two types of phanerogams, depending on whether the seeds are enclosed in a fruit or not. Phanerogams are vascular plants with separate leaf, stem and root systems. These plants have well differentiated reproductive tissues. - A pteridophyte is a vascular plant that disperses spores. They are sometimes referred to as "cryptogams" because they produce neither flowers nor seeds.
Rajasthan PMT-2008
Plant kingdom
259561
The chief water conducting elements of xylem in gymnosperms are :
1 Vessels
2 Fibres
3 Transfusion
4 Tracheids
Explanation:
In Gymnosperm water conduction occurs mainly through tracheids. - Gymnosperm is non flowering seed bearing plants. Vascular bundles are present in the gymnosperms but vessels are absent in the xylem and the phloem lacks the companion cell. Thus water conduction occurs mainly through tracheids.
