271739
Read the following statements choose the correct option. I. Hydrolysis of starch produce malic acid in guard cells of stomata. II. Malic acid accumulation results into closure guard cells. III. Breakdown of malic acid from potassium malate. IV. This opens the stomata.
1 These sequence of events I to IV are formed in CAM plants
2 These sequence of events are normal mechanism of stomatal apparatus
3 The events are characteristics of \(\mathrm{C}_{3}\) and \(\mathrm{C}_{4}\) plants
4 All statements are wrong
Explanation:
Exp:A According to this theory starch converted into the phosphoenolpyruvic acid during the day time with the help of enzyme phosphophenolpyruvate and \(\mathrm{CO}_{2}\). phosphoenol pyruvic acid converted in to oxalo acetic acid which converted in to the malic acid. Malic acid dissociate hydroquinone malate inter in to vacuole of guard cell and hydrogen ions outside of the guard cell. Turgor pressure increase guard cell turgid stomata open.
VMMC-2015
Anatomy of Flowering Plants
271743
The extension of pith between the vascular bundles as seen in the transverse section of a young dicot stem is called:
1 Phloem
2 Medullary ray
3 Cambium
4 Xylem
Explanation:
Exp:B Primary xylem shifted towards the center and primary phloem towards pheriphery and crushed the portion opposite each protoxylem group form pith or medullary ray.
AP EAMCET-2000
Anatomy of Flowering Plants
271744
Amphivasal vascular bundle possess:
1 Xylem around phloem
2 Phloem around xylem
3 Phloem on both sides of xylem
4 Phloem towards centre and xylem towards periphery
Explanation:
Exp:A Amphivasal vascular bundles are a type of vascular bundle found in some plant species. They are characterized by having both xylem and phloem located toward the periphery of the bundle, with the xylem occupying the inner region and the phloem surrounding it.
Rajasthan PMT-2006
Anatomy of Flowering Plants
271745
Protoxylem in Selaginella stem is:
1 endarch
2 mesarch
3 exarch
4 monarch
Explanation:
Exp:C Protoxylem in selaginella stems is a type of primary xylem tissue that develops early in the growth of the plant. Protoxylem refers to the first formed xylem elements or cells in a developing plant organ, such as a stem. In contrast, exarch protoxylem would be positioned towards the periphery or outer region of the stem.
AP EAMCET-1999
Anatomy of Flowering Plants
271746
Vascular bundles in monocotylendons are considered closed because
1 xylem is surrounded all around by phloem
2 there are no vessels with perforations
3 a bundle sheath surrounds each bundle
4 there is no secondary growth
Explanation:
Exp:D As we know that Vascular bundles in Monocotylendons are considered as closed because cambium is absent due to this, there is no secondary growth in the thickness.
271739
Read the following statements choose the correct option. I. Hydrolysis of starch produce malic acid in guard cells of stomata. II. Malic acid accumulation results into closure guard cells. III. Breakdown of malic acid from potassium malate. IV. This opens the stomata.
1 These sequence of events I to IV are formed in CAM plants
2 These sequence of events are normal mechanism of stomatal apparatus
3 The events are characteristics of \(\mathrm{C}_{3}\) and \(\mathrm{C}_{4}\) plants
4 All statements are wrong
Explanation:
Exp:A According to this theory starch converted into the phosphoenolpyruvic acid during the day time with the help of enzyme phosphophenolpyruvate and \(\mathrm{CO}_{2}\). phosphoenol pyruvic acid converted in to oxalo acetic acid which converted in to the malic acid. Malic acid dissociate hydroquinone malate inter in to vacuole of guard cell and hydrogen ions outside of the guard cell. Turgor pressure increase guard cell turgid stomata open.
VMMC-2015
Anatomy of Flowering Plants
271743
The extension of pith between the vascular bundles as seen in the transverse section of a young dicot stem is called:
1 Phloem
2 Medullary ray
3 Cambium
4 Xylem
Explanation:
Exp:B Primary xylem shifted towards the center and primary phloem towards pheriphery and crushed the portion opposite each protoxylem group form pith or medullary ray.
AP EAMCET-2000
Anatomy of Flowering Plants
271744
Amphivasal vascular bundle possess:
1 Xylem around phloem
2 Phloem around xylem
3 Phloem on both sides of xylem
4 Phloem towards centre and xylem towards periphery
Explanation:
Exp:A Amphivasal vascular bundles are a type of vascular bundle found in some plant species. They are characterized by having both xylem and phloem located toward the periphery of the bundle, with the xylem occupying the inner region and the phloem surrounding it.
Rajasthan PMT-2006
Anatomy of Flowering Plants
271745
Protoxylem in Selaginella stem is:
1 endarch
2 mesarch
3 exarch
4 monarch
Explanation:
Exp:C Protoxylem in selaginella stems is a type of primary xylem tissue that develops early in the growth of the plant. Protoxylem refers to the first formed xylem elements or cells in a developing plant organ, such as a stem. In contrast, exarch protoxylem would be positioned towards the periphery or outer region of the stem.
AP EAMCET-1999
Anatomy of Flowering Plants
271746
Vascular bundles in monocotylendons are considered closed because
1 xylem is surrounded all around by phloem
2 there are no vessels with perforations
3 a bundle sheath surrounds each bundle
4 there is no secondary growth
Explanation:
Exp:D As we know that Vascular bundles in Monocotylendons are considered as closed because cambium is absent due to this, there is no secondary growth in the thickness.
271739
Read the following statements choose the correct option. I. Hydrolysis of starch produce malic acid in guard cells of stomata. II. Malic acid accumulation results into closure guard cells. III. Breakdown of malic acid from potassium malate. IV. This opens the stomata.
1 These sequence of events I to IV are formed in CAM plants
2 These sequence of events are normal mechanism of stomatal apparatus
3 The events are characteristics of \(\mathrm{C}_{3}\) and \(\mathrm{C}_{4}\) plants
4 All statements are wrong
Explanation:
Exp:A According to this theory starch converted into the phosphoenolpyruvic acid during the day time with the help of enzyme phosphophenolpyruvate and \(\mathrm{CO}_{2}\). phosphoenol pyruvic acid converted in to oxalo acetic acid which converted in to the malic acid. Malic acid dissociate hydroquinone malate inter in to vacuole of guard cell and hydrogen ions outside of the guard cell. Turgor pressure increase guard cell turgid stomata open.
VMMC-2015
Anatomy of Flowering Plants
271743
The extension of pith between the vascular bundles as seen in the transverse section of a young dicot stem is called:
1 Phloem
2 Medullary ray
3 Cambium
4 Xylem
Explanation:
Exp:B Primary xylem shifted towards the center and primary phloem towards pheriphery and crushed the portion opposite each protoxylem group form pith or medullary ray.
AP EAMCET-2000
Anatomy of Flowering Plants
271744
Amphivasal vascular bundle possess:
1 Xylem around phloem
2 Phloem around xylem
3 Phloem on both sides of xylem
4 Phloem towards centre and xylem towards periphery
Explanation:
Exp:A Amphivasal vascular bundles are a type of vascular bundle found in some plant species. They are characterized by having both xylem and phloem located toward the periphery of the bundle, with the xylem occupying the inner region and the phloem surrounding it.
Rajasthan PMT-2006
Anatomy of Flowering Plants
271745
Protoxylem in Selaginella stem is:
1 endarch
2 mesarch
3 exarch
4 monarch
Explanation:
Exp:C Protoxylem in selaginella stems is a type of primary xylem tissue that develops early in the growth of the plant. Protoxylem refers to the first formed xylem elements or cells in a developing plant organ, such as a stem. In contrast, exarch protoxylem would be positioned towards the periphery or outer region of the stem.
AP EAMCET-1999
Anatomy of Flowering Plants
271746
Vascular bundles in monocotylendons are considered closed because
1 xylem is surrounded all around by phloem
2 there are no vessels with perforations
3 a bundle sheath surrounds each bundle
4 there is no secondary growth
Explanation:
Exp:D As we know that Vascular bundles in Monocotylendons are considered as closed because cambium is absent due to this, there is no secondary growth in the thickness.
NEET Test Series from KOTA - 10 Papers In MS WORD
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Anatomy of Flowering Plants
271739
Read the following statements choose the correct option. I. Hydrolysis of starch produce malic acid in guard cells of stomata. II. Malic acid accumulation results into closure guard cells. III. Breakdown of malic acid from potassium malate. IV. This opens the stomata.
1 These sequence of events I to IV are formed in CAM plants
2 These sequence of events are normal mechanism of stomatal apparatus
3 The events are characteristics of \(\mathrm{C}_{3}\) and \(\mathrm{C}_{4}\) plants
4 All statements are wrong
Explanation:
Exp:A According to this theory starch converted into the phosphoenolpyruvic acid during the day time with the help of enzyme phosphophenolpyruvate and \(\mathrm{CO}_{2}\). phosphoenol pyruvic acid converted in to oxalo acetic acid which converted in to the malic acid. Malic acid dissociate hydroquinone malate inter in to vacuole of guard cell and hydrogen ions outside of the guard cell. Turgor pressure increase guard cell turgid stomata open.
VMMC-2015
Anatomy of Flowering Plants
271743
The extension of pith between the vascular bundles as seen in the transverse section of a young dicot stem is called:
1 Phloem
2 Medullary ray
3 Cambium
4 Xylem
Explanation:
Exp:B Primary xylem shifted towards the center and primary phloem towards pheriphery and crushed the portion opposite each protoxylem group form pith or medullary ray.
AP EAMCET-2000
Anatomy of Flowering Plants
271744
Amphivasal vascular bundle possess:
1 Xylem around phloem
2 Phloem around xylem
3 Phloem on both sides of xylem
4 Phloem towards centre and xylem towards periphery
Explanation:
Exp:A Amphivasal vascular bundles are a type of vascular bundle found in some plant species. They are characterized by having both xylem and phloem located toward the periphery of the bundle, with the xylem occupying the inner region and the phloem surrounding it.
Rajasthan PMT-2006
Anatomy of Flowering Plants
271745
Protoxylem in Selaginella stem is:
1 endarch
2 mesarch
3 exarch
4 monarch
Explanation:
Exp:C Protoxylem in selaginella stems is a type of primary xylem tissue that develops early in the growth of the plant. Protoxylem refers to the first formed xylem elements or cells in a developing plant organ, such as a stem. In contrast, exarch protoxylem would be positioned towards the periphery or outer region of the stem.
AP EAMCET-1999
Anatomy of Flowering Plants
271746
Vascular bundles in monocotylendons are considered closed because
1 xylem is surrounded all around by phloem
2 there are no vessels with perforations
3 a bundle sheath surrounds each bundle
4 there is no secondary growth
Explanation:
Exp:D As we know that Vascular bundles in Monocotylendons are considered as closed because cambium is absent due to this, there is no secondary growth in the thickness.
271739
Read the following statements choose the correct option. I. Hydrolysis of starch produce malic acid in guard cells of stomata. II. Malic acid accumulation results into closure guard cells. III. Breakdown of malic acid from potassium malate. IV. This opens the stomata.
1 These sequence of events I to IV are formed in CAM plants
2 These sequence of events are normal mechanism of stomatal apparatus
3 The events are characteristics of \(\mathrm{C}_{3}\) and \(\mathrm{C}_{4}\) plants
4 All statements are wrong
Explanation:
Exp:A According to this theory starch converted into the phosphoenolpyruvic acid during the day time with the help of enzyme phosphophenolpyruvate and \(\mathrm{CO}_{2}\). phosphoenol pyruvic acid converted in to oxalo acetic acid which converted in to the malic acid. Malic acid dissociate hydroquinone malate inter in to vacuole of guard cell and hydrogen ions outside of the guard cell. Turgor pressure increase guard cell turgid stomata open.
VMMC-2015
Anatomy of Flowering Plants
271743
The extension of pith between the vascular bundles as seen in the transverse section of a young dicot stem is called:
1 Phloem
2 Medullary ray
3 Cambium
4 Xylem
Explanation:
Exp:B Primary xylem shifted towards the center and primary phloem towards pheriphery and crushed the portion opposite each protoxylem group form pith or medullary ray.
AP EAMCET-2000
Anatomy of Flowering Plants
271744
Amphivasal vascular bundle possess:
1 Xylem around phloem
2 Phloem around xylem
3 Phloem on both sides of xylem
4 Phloem towards centre and xylem towards periphery
Explanation:
Exp:A Amphivasal vascular bundles are a type of vascular bundle found in some plant species. They are characterized by having both xylem and phloem located toward the periphery of the bundle, with the xylem occupying the inner region and the phloem surrounding it.
Rajasthan PMT-2006
Anatomy of Flowering Plants
271745
Protoxylem in Selaginella stem is:
1 endarch
2 mesarch
3 exarch
4 monarch
Explanation:
Exp:C Protoxylem in selaginella stems is a type of primary xylem tissue that develops early in the growth of the plant. Protoxylem refers to the first formed xylem elements or cells in a developing plant organ, such as a stem. In contrast, exarch protoxylem would be positioned towards the periphery or outer region of the stem.
AP EAMCET-1999
Anatomy of Flowering Plants
271746
Vascular bundles in monocotylendons are considered closed because
1 xylem is surrounded all around by phloem
2 there are no vessels with perforations
3 a bundle sheath surrounds each bundle
4 there is no secondary growth
Explanation:
Exp:D As we know that Vascular bundles in Monocotylendons are considered as closed because cambium is absent due to this, there is no secondary growth in the thickness.