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Anatomy of Flowering Plants(NCERT)

285806 All the following statements regarding sieve tube elements are true except.

1 Their end walls have perforated sieve plates which become impregnated with lignin at maturity.
2 Distinct protein aceous inclusions, the p-proteins are seen evenly distributed throughout the lumen.
3 They possess peripheral cytoplasm as well as large vacuole.
4 Long, slender, tube-like structures arranged in longitudinal series.
5 They are devoid of nucleus maturity.
Anatomy of Flowering Plants(NCERT)

285807 In the sieve elements, which one of the following is the most likely function of P-proteins?

1 Autolytic enzymes
2 Deposition of callose on sieve plates
3 Sealing mechanism on wounding
4 Providing energy for active translocation enzymes
Anatomy of Flowering Plants(NCERT)

285808 A leaf primordium grows into adult lamina

1 by lateral meristem
2 by marginal meristem
3 by apical meristem
4 at first by apical meristem and later largely by marginal meristem
5 none of these
Anatomy of Flowering Plants(NCERT)

285809 The root of angiosperms show exarch xylem and their stems have endarch bundles. These are continuous throughout the change occurs in

1 upper part of root
2 lower part of root
3 hypocotyl region
4 epicotyl region
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Anatomy of Flowering Plants(NCERT)

285806 All the following statements regarding sieve tube elements are true except.

1 Their end walls have perforated sieve plates which become impregnated with lignin at maturity.
2 Distinct protein aceous inclusions, the p-proteins are seen evenly distributed throughout the lumen.
3 They possess peripheral cytoplasm as well as large vacuole.
4 Long, slender, tube-like structures arranged in longitudinal series.
5 They are devoid of nucleus maturity.
Anatomy of Flowering Plants(NCERT)

285807 In the sieve elements, which one of the following is the most likely function of P-proteins?

1 Autolytic enzymes
2 Deposition of callose on sieve plates
3 Sealing mechanism on wounding
4 Providing energy for active translocation enzymes
Anatomy of Flowering Plants(NCERT)

285808 A leaf primordium grows into adult lamina

1 by lateral meristem
2 by marginal meristem
3 by apical meristem
4 at first by apical meristem and later largely by marginal meristem
5 none of these
Anatomy of Flowering Plants(NCERT)

285809 The root of angiosperms show exarch xylem and their stems have endarch bundles. These are continuous throughout the change occurs in

1 upper part of root
2 lower part of root
3 hypocotyl region
4 epicotyl region
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Anatomy of Flowering Plants(NCERT)

285806 All the following statements regarding sieve tube elements are true except.

1 Their end walls have perforated sieve plates which become impregnated with lignin at maturity.
2 Distinct protein aceous inclusions, the p-proteins are seen evenly distributed throughout the lumen.
3 They possess peripheral cytoplasm as well as large vacuole.
4 Long, slender, tube-like structures arranged in longitudinal series.
5 They are devoid of nucleus maturity.
Anatomy of Flowering Plants(NCERT)

285807 In the sieve elements, which one of the following is the most likely function of P-proteins?

1 Autolytic enzymes
2 Deposition of callose on sieve plates
3 Sealing mechanism on wounding
4 Providing energy for active translocation enzymes
Anatomy of Flowering Plants(NCERT)

285808 A leaf primordium grows into adult lamina

1 by lateral meristem
2 by marginal meristem
3 by apical meristem
4 at first by apical meristem and later largely by marginal meristem
5 none of these
Anatomy of Flowering Plants(NCERT)

285809 The root of angiosperms show exarch xylem and their stems have endarch bundles. These are continuous throughout the change occurs in

1 upper part of root
2 lower part of root
3 hypocotyl region
4 epicotyl region
For More Updates join with Us
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Anatomy of Flowering Plants(NCERT)

285806 All the following statements regarding sieve tube elements are true except.

1 Their end walls have perforated sieve plates which become impregnated with lignin at maturity.
2 Distinct protein aceous inclusions, the p-proteins are seen evenly distributed throughout the lumen.
3 They possess peripheral cytoplasm as well as large vacuole.
4 Long, slender, tube-like structures arranged in longitudinal series.
5 They are devoid of nucleus maturity.
Anatomy of Flowering Plants(NCERT)

285807 In the sieve elements, which one of the following is the most likely function of P-proteins?

1 Autolytic enzymes
2 Deposition of callose on sieve plates
3 Sealing mechanism on wounding
4 Providing energy for active translocation enzymes
Anatomy of Flowering Plants(NCERT)

285808 A leaf primordium grows into adult lamina

1 by lateral meristem
2 by marginal meristem
3 by apical meristem
4 at first by apical meristem and later largely by marginal meristem
5 none of these
Anatomy of Flowering Plants(NCERT)

285809 The root of angiosperms show exarch xylem and their stems have endarch bundles. These are continuous throughout the change occurs in

1 upper part of root
2 lower part of root
3 hypocotyl region
4 epicotyl region