GYNOSTEGIUM IN FAMILY ASCLEPIADACEA: Anthers are fused with stigmatic lobes,androceium fuse with a female reproductive organ so androceium is directly proportional to gynoceium is said to be gynostegium.
GYNOSTEGIUM IN FAMILY ORCHIDACEA:In orchidacea family the filaments of the anther and the style of the ovary fuse together and it forms a complex structure called as column or gynostegium. SUBMITTED BY: A.ANINA,DB:09
B.RUTHYANG DZ-30 Q)WHAT ARE WEEDICIDES?GIVE EXAMPLES? A)Weedisides are commonly called herbisides.They are chemicals which control weeds to enter the field and compete with thw cropsand hence cause a direct effect on the crop.
Dz-132539 What are halophytes and glycophytes? Halophytes: These are native to saline soils where they can grow satisfactorily, compete with other species in same habitat and complete life cycle. Glycophytes: These are plants which cannot resist salts to the same degree as halophytes and exhibit signs of growth inhibition, leaf discolouration etc;
Nitrification: It is the biological oxidation of ammonia to nitrite followed by the oxidation of the nitrite to nitrate. Denitrification: It a process in which nitrates in the soil are converted back into nitrogen (N2) to go out into the atmosphere. Bacteria help with this process. Ammonification: It is decomposition of dead organic matter with production of ammonia by the action of bacteria. Submitted by: M.V.N.Sravya, 132515
Question: Define stress physiology? Mention physiological effects of salt? Answer: The study of functioning of plants under various environmental stresses or adverse environmental conditions is called as stress physiology. salt stress:High concentrations of salts in the cell sap may effect water relations and metabolism of plants. Salt accumulation appears to reduce activities of some enzymes leading to decreased metabolic rate. Submitted by: R.V.L Anvitha , 132537
PHYSIOLOGICAL EFFECTS : AUXINS: 1. CELL ELONGATION: Its stimulates the elongation of cells. They induce growth in excised stem and coleoptiles by promoting cell elongation. 2. ROOT INITIATION: Auxins like IAA induce the formation of roots on stems cutting at low concentrations. 3. APICAL DOMINANCE: auxins induces shoot ,apical dominance.Actively growing apical buds dominate and inhibit the growth of axillary buds. 4. PARTHENOCARPY : The ability of the ovary of a flower to develop into fruit without fertilization is reffered as parthenocarpy. CYTOKININS: 1. CELL DIVISION: Induction of cell division is considered as major function of cytokinins. 2. DELAY IN SENESCENCE : The ageing process in plants is know as senescence.cytokinins delay the process of senescence. 3. ORGAN FORMATION: Cytokinins in association with auxins,induce differentiation of organs. 4. OPENING OF STOMATA: Cytokinins increase the potassium ion concentration in guard cells and help in the opening of stomata.
DASARI HARIKA DZ-132521 Sorry mam i have some troble in my mail so i kept ans from my brothes mail. W Q)WHAT IS TRANSLATION?AND WHERE IT OCCURS? A)The transfer of polypeptide chain from mRNA to protiens is called translation. It occurs in ribosomes which are present as tiny particles on endoplasmic reticulum if cells. This process occurs in 3 stages.They are 1.Initiation 2.Elongation 3.Termination.
132547 what is seed certification? seed certification is a legally sanctioned system for quality control of seed multiplication and production.
what is breeders seed? A breeders seed is an offspring of nucleus seed.A breeder is a person (qualified plant breeder) or organization who raises plant primary for breeding purpose.
Symbiotic nitrogen fixation it occurs in plants, the association between legumes and Rizobium bacteria is called symbiotic nitrogen fixation.. by- pavan kumar-DZ-10
K.RANGANATH DZ-09,,,132509 1)what is FERMENTATION Fermentation is a metabolic process that converts sugar to acids,gases(or)alcohol.It occurs in yeast and bacteria. 2)AEROBIC RESPIRATION It is the process most living things undergo to use food energy
Stratification: seeds many plants do not germinate until they are exposed to chilling temperature of 0-5°c for a few weeks to few months. The low temperature treatment given to the seeds to break their dormancy is called stratification. Scarification: The method employed in softening or weakening of hard seed coat is know as scarification. It includes rubbing of seeds on rough surface to reduce thickness of seed coat.
Stratification: seeds many plants do not germinate until they are exposed to chilling temperature of 0-5°c for a few weeks to few months. The low temperature treatment given to the seeds to break their dormancy is called stratification. Scarification: The method employed in softening or weakening of hard seed coat is know as scarification. It includes rubbing of seeds on rough surface to reduce thickness of seed coat. E.Mounika 132542
Q.What are chain termination codon?Give examples? A.These are the stop codons which terminates the protein synthesis. Ex:UAA,UAG,UGA. Dz-132520 G.B.L.Prasanna
Q.What are chain termination codon?Give examples? A.These are the stop codons which terminates the protein synthesis. Ex:UAA,UAG,UGA. Dz-20 G.B.L.Prasanna
Q.What are chain termination codon?Give examples? A.These are the stop codons which terminates the protein synthesis. Ex:UAA,UAG,UGA. Dz-132520 G.B.L.Prasanna
Mitochondria: It has self replicating DNA.Thus it is capable of producing its own genetic material.Hence called semiautonomous cell organelle F1 particle: On the inner folding, cristae numerous stalked structures are present and are called f0-f1 particles . They play imp role in electron transport during ATP synthesis Dz-5 Jayasres
B.SANJAY, DZ;33 DORMANCY;Inactive nature of seed called dormancy,[Break period between formation and germination of seed even though it is provide with a all favorable conditions. phytohormone that promotes the dormancy is GIBBERLINS
Avena curvature Test:The avena seedlings when planted the tip shows curvature.This curvatures of stems were proportional to the amount of growth substance in the agar (Went, 1928). This test was called the avena curvature test. Dz-29 Priyanka
what is leg hemoglobin?Mention its functions. To fix nitrogen, legume nodules require a protein called leg hemoglobin. Under physiological conditions the heme group is synthesized by the bacteroids and the globin by the ribosomes of the infected cells,then heme and globin are assembled in the plant cell cytoplasm. Functions: It was proposed that the protein carries the oxygen required for bacteroid respiration and, consequently, for maintaining active nitrogen fixation.
132546 what is seed dormancy and mention any two physiological factors causes the dormancy? The resting period of the seeds where the active growth temporarily suspended.The seeds of such plants are considered to be in a state of dormancy.ABA and physiologically immature embryos are responsible for dormancy.
what is chilling treatment and where it is used? The exposure of the seeds at low temperature 0-5'C to promote the germination capacity.it is used for the seeds of temperate plant eg:- apple,peach which don't germinate soon after their harvest.
Sai Rohini Dz:32 physiological effects of gebberellin and abscisic acid? The dwarf rosette mutant of the Wisconsin Fast Plant is characterized by a single gene mutation which, in the homozygous condition ros/ros, results in 4 to 10 times less gibberellin in the tissues.the mutant's leaves lie flat aganist the soil in what is called a rosette habit. . experiment must provide treatment controls. . must start enough seeds for controls and all experiments. abscisic acid: abscisic acid slows seed germination and improves wheat's tolerance to cold and drought. .The plant hormone abscisic acid (ABA) regulates drought stress responses by mediating stomatal closure, thereby reducing transpirational water loss.
Dear students,
ReplyDeleteSubmit your assignment in this box
GYNOSTEGIUM IN FAMILY ASCLEPIADACEA: Anthers are fused with stigmatic lobes,androceium fuse with a female reproductive organ so androceium is directly proportional to gynoceium is said to be gynostegium.
ReplyDeleteGYNOSTEGIUM IN FAMILY ORCHIDACEA:In orchidacea family the filaments of the anther and the style of the ovary fuse together and it forms a complex structure called as column or gynostegium.
SUBMITTED BY:
A.ANINA,DB:09
Dear Anina,
DeleteSubmit your assignment in DB post box. post the same text in the biosystematics post.
B.RUTHYANG
ReplyDeleteDZ-30
Q)WHAT ARE WEEDICIDES?GIVE EXAMPLES?
A)Weedisides are commonly called herbisides.They are chemicals which control weeds to enter the field and compete with thw cropsand hence cause a direct effect on the crop.
Dear Ruth,
DeleteGood, Your Assignments -05- for this semester
Dz-132539
ReplyDeleteWhat are halophytes and glycophytes?
Halophytes: These are native to saline soils where they can grow satisfactorily, compete with other species in same habitat and complete life cycle.
Glycophytes: These are plants which cannot resist salts to the same degree as halophytes and exhibit signs of growth inhibition, leaf discolouration etc;
Dear Anvitha,
DeleteGood, Your Assignment marks- 05 for this semester
Nitrification: It is the biological oxidation of ammonia to nitrite followed by the oxidation of the nitrite to nitrate.
ReplyDeleteDenitrification: It a process in which nitrates in the soil are converted back into nitrogen (N2) to go out into the atmosphere. Bacteria help with this process.
Ammonification: It is decomposition of dead organic matter with production of ammonia by the action of bacteria.
Submitted by:
M.V.N.Sravya, 132515
Question: Define stress physiology? Mention physiological effects of salt?
ReplyDeleteAnswer: The study of functioning of plants under various environmental stresses or adverse environmental conditions is called as stress physiology.
salt stress:High concentrations of salts in the cell sap may effect water relations and metabolism of plants. Salt accumulation appears to reduce activities of some enzymes leading to decreased metabolic rate.
Submitted by: R.V.L Anvitha , 132537
Dear Anvitha,
DeleteStudy well, your assigngment marks- 05
PHYSIOLOGICAL EFFECTS :
ReplyDeleteAUXINS:
1. CELL ELONGATION: Its stimulates the elongation of cells. They induce growth in excised stem and coleoptiles by promoting cell elongation.
2. ROOT INITIATION: Auxins like IAA induce the formation of roots on stems cutting at low concentrations.
3. APICAL DOMINANCE: auxins induces shoot ,apical dominance.Actively
growing apical buds dominate and inhibit the growth of axillary buds.
4. PARTHENOCARPY : The ability of the ovary of a flower to develop into fruit without fertilization is reffered as parthenocarpy.
CYTOKININS:
1. CELL DIVISION: Induction of cell division is considered as major function of cytokinins.
2. DELAY IN SENESCENCE : The ageing process in plants is know as senescence.cytokinins delay the process of senescence.
3. ORGAN FORMATION: Cytokinins in association with auxins,induce differentiation of organs.
4. OPENING OF STOMATA: Cytokinins increase the potassium ion concentration in guard cells and help in the opening of stomata.
Dear Divya,
DeleteStudy well, your assignment marks-05
DASARI HARIKA
ReplyDeleteDZ-132521
Sorry mam i have some troble in my mail so i kept ans from my brothes mail.
W
Q)WHAT IS TRANSLATION?AND WHERE IT OCCURS?
A)The transfer of polypeptide chain from mRNA to protiens is called translation.
It occurs in ribosomes which are present as tiny particles on endoplasmic reticulum if cells.
This process occurs in 3 stages.They are 1.Initiation 2.Elongation 3.Termination.
Dear Harika,
DeleteGood but some clarity in the definition.
Study well, Your assignments -05
132547
ReplyDeletewhat is seed certification?
seed certification is a legally sanctioned system for quality control of seed multiplication and production.
what is breeders seed?
A breeders seed is an offspring of nucleus seed.A breeder is a person (qualified plant breeder) or organization who raises plant primary for breeding purpose.
Dear Praveen,
ReplyDeleteStudy well, Your assignment marks- 04
Symbiotic nitrogen fixation it occurs in plants, the association between legumes and Rizobium bacteria is called symbiotic nitrogen fixation..
ReplyDeleteby- pavan kumar-DZ-10
Dear Pavan
DeleteRhizobium, mutual relationship between two living organisms.
Assignment marks- 04
K.RANGANATH
ReplyDeleteDZ-09,,,132509
1)what is FERMENTATION
Fermentation is a metabolic process that converts sugar to acids,gases(or)alcohol.It occurs in yeast and bacteria.
2)AEROBIC RESPIRATION
It is the process most living things undergo to use food energy
Dear Ranganath,
DeleteDefine Aerobic Respiration in a systematic manner
Stratification: seeds many plants do not germinate until they are exposed to chilling temperature of 0-5°c for a few weeks to few months. The low temperature treatment given to the seeds to break their dormancy is called stratification.
ReplyDeleteScarification: The method employed in softening or weakening of hard seed coat is know as scarification. It includes rubbing of seeds on rough surface to reduce thickness of seed coat.
Stratification: seeds many plants do not germinate until they are exposed to chilling temperature of 0-5°c for a few weeks to few months. The low temperature treatment given to the seeds to break their dormancy is called stratification.
ReplyDeleteScarification: The method employed in softening or weakening of hard seed coat is know as scarification. It includes rubbing of seeds on rough surface to reduce thickness of seed coat.
E.Mounika
132542
Dear Mounica,
DeleteStudy well, your assignment marks-05
Q.What are chain termination codon?Give examples?
ReplyDeleteA.These are the stop codons which terminates the protein synthesis.
Ex:UAA,UAG,UGA.
Dz-132520
G.B.L.Prasanna
Q.What are chain termination codon?Give examples?
ReplyDeleteA.These are the stop codons which terminates the protein synthesis.
Ex:UAA,UAG,UGA.
Dz-20
G.B.L.Prasanna
Q.What are chain termination codon?Give examples?
ReplyDeleteA.These are the stop codons which terminates the protein synthesis.
Ex:UAA,UAG,UGA.
Dz-132520
G.B.L.Prasanna
Dear Prasanna,
DeleteStudy well, your assignment marks-05
Mitochondria: It has self replicating DNA.Thus it is capable of producing its own genetic material.Hence called semiautonomous cell organelle
DeleteF1 particle: On the inner folding, cristae numerous stalked structures are present and are called f0-f1 particles . They play imp role in electron transport during ATP synthesis
Dz-5
Jayasres
Hareen,
DeleteMitochandria- power house of cell, 70 s ribosomes, circular naked DNA
your assignment marks-04
B.SANJAY,
ReplyDeleteDZ;33
DORMANCY;Inactive nature of seed called dormancy,[Break period between formation and germination of seed even though it is provide with a all favorable conditions.
phytohormone that promotes the dormancy is GIBBERLINS
Dear sanjay,
DeleteGibberllins
Your assignment marks- 05
Avena curvature Test:The avena seedlings when planted the tip shows curvature.This curvatures of stems were proportional to the amount of growth substance in the agar (Went, 1928). This test was called the avena curvature test.
ReplyDeleteDz-29
Priyanka
Dear Priyanka,
DeleteAuxins role on growth
conc. of Auxins
Your assignment marks-04
SHEEBA RANI
ReplyDeleteDZ-28
WHAT IS TRANSCRIPTION?
Synthesis of m-RNA from DNA by RNA polymerase enzyme.It occurs in nucleus.
Dear rani,
DeleteDuring the process of Protein synthesis -
your assignment marks-05
Deedee Harper
ReplyDeleteDz:12..,132512
what is leg hemoglobin?Mention its functions.
To fix nitrogen, legume nodules require a protein
called leg hemoglobin.
Under physiological conditions the heme group is synthesized by the bacteroids and the globin by the ribosomes of the infected cells,then heme and globin are assembled in the plant cell cytoplasm.
Functions:
It was proposed that the protein carries the oxygen
required for bacteroid respiration and, consequently, for
maintaining active nitrogen fixation.
Dear Martin,
DeleteStudy well. your assignment marks-04
132546
ReplyDeletewhat is seed dormancy and mention any two physiological factors causes the dormancy?
The resting period of the seeds where the active growth temporarily suspended.The seeds of such plants are considered to be in a state of dormancy.ABA and physiologically immature embryos are responsible for dormancy.
what is chilling treatment and where it is used?
The exposure of the seeds at low temperature 0-5'C to promote the germination capacity.it is used for the seeds of temperate plant eg:- apple,peach which don't germinate soon after their harvest.
Dear Raghavi,
DeleteGood, your assignment marks-05
Sai Rohini
ReplyDeleteDz:32
physiological effects of gebberellin and abscisic acid?
The dwarf rosette mutant of the Wisconsin Fast Plant is characterized by a single gene
mutation which, in the homozygous condition ros/ros, results in 4 to 10 times less gibberellin in the tissues.the mutant's leaves lie flat aganist the soil in what is called a rosette habit.
. experiment must provide treatment controls.
. must start enough seeds for controls and all experiments.
abscisic acid:
abscisic acid slows seed germination and improves wheat's tolerance to cold and drought.
.The plant hormone abscisic acid (ABA) regulates drought stress responses by mediating stomatal closure, thereby reducing transpirational water loss.
Dear Rohini,
ReplyDeleteGibberlins- Elongation of stems, flowering, reduce dormancy, parthenocarpy
ABA- promotes dormancy, stress, anti transparent, senescence.
Your assignment marks- 04
It's very helpful to students.
ReplyDelete