259689
The phloem of angiosperms differs from that of other vascular plants by the presence of
1 vessels
2 companion cells
3 tylosoides
4 albuminous cells
5 secretory cells
Explanation:
The phloem of angiosperms differs from that of other vascular plants by the presence of companion cells. These are specialised thin walled parenchymatous cells present adjacent to sieve tube in the phloem. It appears to regulates the activity of the adjacent sieve element and to take part in loading and unloading of sugar into the sieve element.
CMC Vellore-2008
Plant kingdom
259691
Conifers differ from grasses in the
1 production of seed from ovules
2 lack of xylem tracheids
3 absence of pollen tubes
4 formation of endosperm before fertilization
Explanation:
Formation of endosperm before fertilization (in gymnosperms) occurs in conifer while in grasses endosperm are formed after fertilization. Poaceae is a large and nearly ubiquitous family of {|c|c|} | Conifers | Grasses | |---|---| |{l} The endosperm is | |formed before | |fertilization & {l} |The endosperm is | |---| |formed after | |fertilization \\ \hline {l} |- Nutrition is provided to | |---| |the embryo by archegonia & {l} |- Nutrition is provided | |---| |to the embryo by | |endosperm \\ \hline \end{tabular} monocotyledonous flowering plant commonly known as grasses. Difference between conifers and grasses.
JCECE-2014
Plant kingdom
259692
Which of the following plant shows multiple epidermis?
1 Croton
2 Atlium
3 Nerium
4 Cucurbits
Explanation:
Nerium is xerophytes that shows multiple epidermis. They consist of many layers and are found in Nerium leaves. Both the adaxial and abaxial epidermis in nerium are multiseriate, being composed of up to 3 layers of compactly arranged cells with heavily cutinized other walls.
BVP-2007
Plant kingdom
259696
Which of the following is not a feature of mangrove plant?
1 production of respiration roots called pneumatophores
2 lack of slit like prop root
3 viviparous method of germination of seeds
4 all of the above
Explanation:
Mangrove plants are found in marshy areas. In such plants many roots come out vertically above the ground. These are hollow roots and are called pneumatophores. They facilitate exchange of gases in roots. In banyan trees hanging roots come out from branches. The hanging roots then go into the soil to provide additional support to the huge banyan tree such root are called prop roots.
BVP-2006
Plant kingdom
259701
Double fertilization occurs in
1 Riccia
2 Pteridium
3 Cycas
4 Capsella
Explanation:
Double fertilization occurs in capsella. It is the characteristic feature of angiosperms plants. Double fertilization in flowering plant reproduction, the fusion of the egg and sperm and the simultaneous fusion of a second sperm and 2 polar nuclei that ultimately results in the formation of the endosperm of the seed. - Capsella is a biennial and a herbaceous plant present in brassicaceae of the mustard family.
259689
The phloem of angiosperms differs from that of other vascular plants by the presence of
1 vessels
2 companion cells
3 tylosoides
4 albuminous cells
5 secretory cells
Explanation:
The phloem of angiosperms differs from that of other vascular plants by the presence of companion cells. These are specialised thin walled parenchymatous cells present adjacent to sieve tube in the phloem. It appears to regulates the activity of the adjacent sieve element and to take part in loading and unloading of sugar into the sieve element.
CMC Vellore-2008
Plant kingdom
259691
Conifers differ from grasses in the
1 production of seed from ovules
2 lack of xylem tracheids
3 absence of pollen tubes
4 formation of endosperm before fertilization
Explanation:
Formation of endosperm before fertilization (in gymnosperms) occurs in conifer while in grasses endosperm are formed after fertilization. Poaceae is a large and nearly ubiquitous family of {|c|c|} | Conifers | Grasses | |---|---| |{l} The endosperm is | |formed before | |fertilization & {l} |The endosperm is | |---| |formed after | |fertilization \\ \hline {l} |- Nutrition is provided to | |---| |the embryo by archegonia & {l} |- Nutrition is provided | |---| |to the embryo by | |endosperm \\ \hline \end{tabular} monocotyledonous flowering plant commonly known as grasses. Difference between conifers and grasses.
JCECE-2014
Plant kingdom
259692
Which of the following plant shows multiple epidermis?
1 Croton
2 Atlium
3 Nerium
4 Cucurbits
Explanation:
Nerium is xerophytes that shows multiple epidermis. They consist of many layers and are found in Nerium leaves. Both the adaxial and abaxial epidermis in nerium are multiseriate, being composed of up to 3 layers of compactly arranged cells with heavily cutinized other walls.
BVP-2007
Plant kingdom
259696
Which of the following is not a feature of mangrove plant?
1 production of respiration roots called pneumatophores
2 lack of slit like prop root
3 viviparous method of germination of seeds
4 all of the above
Explanation:
Mangrove plants are found in marshy areas. In such plants many roots come out vertically above the ground. These are hollow roots and are called pneumatophores. They facilitate exchange of gases in roots. In banyan trees hanging roots come out from branches. The hanging roots then go into the soil to provide additional support to the huge banyan tree such root are called prop roots.
BVP-2006
Plant kingdom
259701
Double fertilization occurs in
1 Riccia
2 Pteridium
3 Cycas
4 Capsella
Explanation:
Double fertilization occurs in capsella. It is the characteristic feature of angiosperms plants. Double fertilization in flowering plant reproduction, the fusion of the egg and sperm and the simultaneous fusion of a second sperm and 2 polar nuclei that ultimately results in the formation of the endosperm of the seed. - Capsella is a biennial and a herbaceous plant present in brassicaceae of the mustard family.
259689
The phloem of angiosperms differs from that of other vascular plants by the presence of
1 vessels
2 companion cells
3 tylosoides
4 albuminous cells
5 secretory cells
Explanation:
The phloem of angiosperms differs from that of other vascular plants by the presence of companion cells. These are specialised thin walled parenchymatous cells present adjacent to sieve tube in the phloem. It appears to regulates the activity of the adjacent sieve element and to take part in loading and unloading of sugar into the sieve element.
CMC Vellore-2008
Plant kingdom
259691
Conifers differ from grasses in the
1 production of seed from ovules
2 lack of xylem tracheids
3 absence of pollen tubes
4 formation of endosperm before fertilization
Explanation:
Formation of endosperm before fertilization (in gymnosperms) occurs in conifer while in grasses endosperm are formed after fertilization. Poaceae is a large and nearly ubiquitous family of {|c|c|} | Conifers | Grasses | |---|---| |{l} The endosperm is | |formed before | |fertilization & {l} |The endosperm is | |---| |formed after | |fertilization \\ \hline {l} |- Nutrition is provided to | |---| |the embryo by archegonia & {l} |- Nutrition is provided | |---| |to the embryo by | |endosperm \\ \hline \end{tabular} monocotyledonous flowering plant commonly known as grasses. Difference between conifers and grasses.
JCECE-2014
Plant kingdom
259692
Which of the following plant shows multiple epidermis?
1 Croton
2 Atlium
3 Nerium
4 Cucurbits
Explanation:
Nerium is xerophytes that shows multiple epidermis. They consist of many layers and are found in Nerium leaves. Both the adaxial and abaxial epidermis in nerium are multiseriate, being composed of up to 3 layers of compactly arranged cells with heavily cutinized other walls.
BVP-2007
Plant kingdom
259696
Which of the following is not a feature of mangrove plant?
1 production of respiration roots called pneumatophores
2 lack of slit like prop root
3 viviparous method of germination of seeds
4 all of the above
Explanation:
Mangrove plants are found in marshy areas. In such plants many roots come out vertically above the ground. These are hollow roots and are called pneumatophores. They facilitate exchange of gases in roots. In banyan trees hanging roots come out from branches. The hanging roots then go into the soil to provide additional support to the huge banyan tree such root are called prop roots.
BVP-2006
Plant kingdom
259701
Double fertilization occurs in
1 Riccia
2 Pteridium
3 Cycas
4 Capsella
Explanation:
Double fertilization occurs in capsella. It is the characteristic feature of angiosperms plants. Double fertilization in flowering plant reproduction, the fusion of the egg and sperm and the simultaneous fusion of a second sperm and 2 polar nuclei that ultimately results in the formation of the endosperm of the seed. - Capsella is a biennial and a herbaceous plant present in brassicaceae of the mustard family.
259689
The phloem of angiosperms differs from that of other vascular plants by the presence of
1 vessels
2 companion cells
3 tylosoides
4 albuminous cells
5 secretory cells
Explanation:
The phloem of angiosperms differs from that of other vascular plants by the presence of companion cells. These are specialised thin walled parenchymatous cells present adjacent to sieve tube in the phloem. It appears to regulates the activity of the adjacent sieve element and to take part in loading and unloading of sugar into the sieve element.
CMC Vellore-2008
Plant kingdom
259691
Conifers differ from grasses in the
1 production of seed from ovules
2 lack of xylem tracheids
3 absence of pollen tubes
4 formation of endosperm before fertilization
Explanation:
Formation of endosperm before fertilization (in gymnosperms) occurs in conifer while in grasses endosperm are formed after fertilization. Poaceae is a large and nearly ubiquitous family of {|c|c|} | Conifers | Grasses | |---|---| |{l} The endosperm is | |formed before | |fertilization & {l} |The endosperm is | |---| |formed after | |fertilization \\ \hline {l} |- Nutrition is provided to | |---| |the embryo by archegonia & {l} |- Nutrition is provided | |---| |to the embryo by | |endosperm \\ \hline \end{tabular} monocotyledonous flowering plant commonly known as grasses. Difference between conifers and grasses.
JCECE-2014
Plant kingdom
259692
Which of the following plant shows multiple epidermis?
1 Croton
2 Atlium
3 Nerium
4 Cucurbits
Explanation:
Nerium is xerophytes that shows multiple epidermis. They consist of many layers and are found in Nerium leaves. Both the adaxial and abaxial epidermis in nerium are multiseriate, being composed of up to 3 layers of compactly arranged cells with heavily cutinized other walls.
BVP-2007
Plant kingdom
259696
Which of the following is not a feature of mangrove plant?
1 production of respiration roots called pneumatophores
2 lack of slit like prop root
3 viviparous method of germination of seeds
4 all of the above
Explanation:
Mangrove plants are found in marshy areas. In such plants many roots come out vertically above the ground. These are hollow roots and are called pneumatophores. They facilitate exchange of gases in roots. In banyan trees hanging roots come out from branches. The hanging roots then go into the soil to provide additional support to the huge banyan tree such root are called prop roots.
BVP-2006
Plant kingdom
259701
Double fertilization occurs in
1 Riccia
2 Pteridium
3 Cycas
4 Capsella
Explanation:
Double fertilization occurs in capsella. It is the characteristic feature of angiosperms plants. Double fertilization in flowering plant reproduction, the fusion of the egg and sperm and the simultaneous fusion of a second sperm and 2 polar nuclei that ultimately results in the formation of the endosperm of the seed. - Capsella is a biennial and a herbaceous plant present in brassicaceae of the mustard family.
259689
The phloem of angiosperms differs from that of other vascular plants by the presence of
1 vessels
2 companion cells
3 tylosoides
4 albuminous cells
5 secretory cells
Explanation:
The phloem of angiosperms differs from that of other vascular plants by the presence of companion cells. These are specialised thin walled parenchymatous cells present adjacent to sieve tube in the phloem. It appears to regulates the activity of the adjacent sieve element and to take part in loading and unloading of sugar into the sieve element.
CMC Vellore-2008
Plant kingdom
259691
Conifers differ from grasses in the
1 production of seed from ovules
2 lack of xylem tracheids
3 absence of pollen tubes
4 formation of endosperm before fertilization
Explanation:
Formation of endosperm before fertilization (in gymnosperms) occurs in conifer while in grasses endosperm are formed after fertilization. Poaceae is a large and nearly ubiquitous family of {|c|c|} | Conifers | Grasses | |---|---| |{l} The endosperm is | |formed before | |fertilization & {l} |The endosperm is | |---| |formed after | |fertilization \\ \hline {l} |- Nutrition is provided to | |---| |the embryo by archegonia & {l} |- Nutrition is provided | |---| |to the embryo by | |endosperm \\ \hline \end{tabular} monocotyledonous flowering plant commonly known as grasses. Difference between conifers and grasses.
JCECE-2014
Plant kingdom
259692
Which of the following plant shows multiple epidermis?
1 Croton
2 Atlium
3 Nerium
4 Cucurbits
Explanation:
Nerium is xerophytes that shows multiple epidermis. They consist of many layers and are found in Nerium leaves. Both the adaxial and abaxial epidermis in nerium are multiseriate, being composed of up to 3 layers of compactly arranged cells with heavily cutinized other walls.
BVP-2007
Plant kingdom
259696
Which of the following is not a feature of mangrove plant?
1 production of respiration roots called pneumatophores
2 lack of slit like prop root
3 viviparous method of germination of seeds
4 all of the above
Explanation:
Mangrove plants are found in marshy areas. In such plants many roots come out vertically above the ground. These are hollow roots and are called pneumatophores. They facilitate exchange of gases in roots. In banyan trees hanging roots come out from branches. The hanging roots then go into the soil to provide additional support to the huge banyan tree such root are called prop roots.
BVP-2006
Plant kingdom
259701
Double fertilization occurs in
1 Riccia
2 Pteridium
3 Cycas
4 Capsella
Explanation:
Double fertilization occurs in capsella. It is the characteristic feature of angiosperms plants. Double fertilization in flowering plant reproduction, the fusion of the egg and sperm and the simultaneous fusion of a second sperm and 2 polar nuclei that ultimately results in the formation of the endosperm of the seed. - Capsella is a biennial and a herbaceous plant present in brassicaceae of the mustard family.
