Name the cell organelle associated with photorespiration? Who discovered it?

Name the cell organelle associated with photorespiration? Who discovered it?
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Ans: Peroxisome, Rhodin  
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Cell organelle taking part in photorespiration is

Description : Cell organelle taking part in photorespiration is

Last Answer : Cell organelle taking part in photorespiration is A. Ribosome B. Dictyosome C. Peroxisome D. Glyoxisome

Cell organelle covered by single unit membrane is: (a) Glyoxisome (b) Lysosome (c) Peroxisomes (d) All of these.

Description : Cell organelle covered by single unit membrane is: (a) Glyoxisome (b) Lysosome (c) Peroxisomes (d) All of these.

Last Answer : Ans. ((d))

Describe the cell organelle which is responsible for the synthesis of starch.

Description : Describe the cell organelle which is responsible for the synthesis of starch. 

Last Answer : The cell organelle responsible for the formation of starch is Chloroplast. It was discovered by Sachs and named by Schimper. It is usually disc shaped or Biconvex or Oval or spherical.   ... granum and the unstacked thylakoids that connect the adjacent grana are called as Stroma thylakoids.  

With the help of labeled diagram give an account of the cell organelle which is generally referred as Cell brain.

Description : With the help of labeled diagram give an account of the cell organelle which is generally referred as Cell brain.

Last Answer : Ans: Nucleus is the controlling centre of the cell that consists of chromosomes. Structurally it has four parts known as Nuclear envelope, Nucleoplasm, Nucleolus and Chromatin.   Nuclear ... chromosome at secondary constriction. It also disappears in Prophase and reappears in telophase.   

Organelles involved in photorespiration are (a) Mitochondria, chloroplasts and ribosomes (b) Mitochondria, Peroxisomes and chloroplasts (c) Mitochondria, nucleus and ribosomes (d) Mitochondria, proxisomes and glyoxisomes

Description : Organelles involved in photorespiration are (a) Mitochondria, chloroplasts and ribosomes (b) Mitochondria, Peroxisomes and chloroplasts (c) Mitochondria, nucleus and ribosomes (d) Mitochondria, proxisomes and glyoxisomes

Last Answer : Ans. ((b))

The first reaction in photorespiration is: (a) Decarboxylation (b) Oxygenation (c) Carboxylation (d) Phosphorylation

Description : The first reaction in photorespiration is: (a) Decarboxylation (b) Oxygenation (c) Carboxylation (d) Phosphorylation

Last Answer : Ans. ((b))

Photorespiration is related to: (a) Chloroplast (b) Mitochondria (c) Peroxisome (d) Glyoxysomes

Description : Photorespiration is related to: (a) Chloroplast (b) Mitochondria (c) Peroxisome (d) Glyoxysomes

Last Answer : Ans. ((c))

The organelles involved in photorespiration are (a) Glyoxysomes, chloroplast and mithondria (b) Chloroplast, peroxisome and glythisome (c) Mitochondria, peroxisome and glyoxysomes (d) Chloroplast, mitochondria and peroxisome

Description : The organelles involved in photorespiration are (a) Glyoxysomes, chloroplast and mithondria (b) Chloroplast, peroxisome and glythisome (c) Mitochondria, peroxisome and glyoxysomes (d) Chloroplast, mitochondria and peroxisome

Last Answer : Ans. ((d))

Potential energy is produced during a.Photorespiration b.Respiration c.Photosynthesis d.ATP synthesis

Description : Potential energy is produced during a.Photorespiration b.Respiration c.Photosynthesis d.ATP synthesis

Last Answer : c.Photosynthesis

Select the correct statement: (1) C4 pathway for. CO2 fixation were discovered by Hatch and Slack (2) CO2 is essential for photosynthesis (3) Addition of sodium carbonate in water retards photosynthetic rate in vallisneria (4) Phloem is the principal pathway for translocation of solutes

Description : Select the correct statement: (1) C4 pathway for. CO2 fixation were discovered by Hatch and Slack (2) CO2 is essential for photosynthesis (3) Addition of sodium carbonate in water retards photosynthetic rate in vallisneria (4) Phloem is the principal pathway for translocation of solutes

Last Answer : Ans. ((c))

Chondriosome is discovered by: (a) Benda (b) Messelson (c) Dujardin (d) Taylor

Description : Chondriosome is discovered by: (a) Benda (b) Messelson (c) Dujardin (d) Taylor

Last Answer : Ans. ((a))

Lampbrush chromosome was first discovered by a. Ruckert b. Robert c. Ammajan d. Farenten

Description : Lampbrush chromosome was first discovered by a. Ruckert b. Robert c. Ammajan d. Farenten

Last Answer : a. Ruckert

Double fertilization in Angiosperms was discovered by

Description : Double fertilization in Angiosperms was discovered by 

Last Answer : Double fertilization in Angiosperms was discovered by – Nawaschin

What is syngamy? Who discovered it?

Description : What is syngamy? Who discovered it? 

Last Answer : Ans: Syngamy is fusion of male and female gametes. It was discovered by Strasburger.  

Who discovered living cells? Name the first discovered living organism

Description : Who discovered living cells? Name the first discovered living organism  

Last Answer : Ans: Leeuwenhoek, Bacteria 

What are mutations? Who discovered them?

Description : What are mutations? Who discovered them?

Last Answer : Ans: Sudden inheritable change in an organism is called as mutation. They were discovered by Victor Hugo de Vriese.  

In plant cells, peroxisomes are associated with (a) photorespiration (b) phototropism (c) photoperiodism (d) photosynthesis.

Description : In plant cells, peroxisomes are associated with (a) photorespiration (b) phototropism (c) photoperiodism (d) photosynthesis.

Last Answer : (a) photorespiration

Consider the following statements associated with the germination of an angiospermous seed: (1) As the seed gets hydrated and germinates, enzymatic activity is increased (2) The respiration rate of the germinating seed increases along with the increased enzymatic activity (3) The increase in the respiratory rate continues till senescence (4) Rate of enzymatic activity decreases

Description : Consider the following statements associated with the germination of an angiospermous seed: (1) As the seed gets hydrated and germinates, enzymatic activity is increased (2) The respiration ... The increase in the respiratory rate continues till senescence (4) Rate of enzymatic activity decreases

Last Answer : Ans. ((b))

The high yielding hybrid crop varieties to exploit hybrid vigour, the farmers need to Purchase fresh hybrid seed every year because: (a) Hybrid vigour is not long standing due to inbreeding depression (b) They are not allowed to grow their own seed (c) It is always associated with 4ncreased heterozygosity (d) Government has accepted Dunkel’s proposals

Description : The high yielding hybrid crop varieties to exploit hybrid vigour, the farmers need to Purchase fresh hybrid seed every year because: (a) Hybrid vigour is not long standing due to inbreeding ... (c) It is always associated with 4ncreased heterozygosity (d) Government has accepted Dunkel's proposals

Last Answer : Ans. ((a))

Mycorrhizae is associated with the following a) Formation of root nodules b) Hyphae penetrating the soil c) Found mostly in lower plants d) Soil erosion

Description : Mycorrhizae is associated with the following a) Formation of root nodules b) Hyphae penetrating the soil c) Found mostly in lower plants d) Soil erosion

Last Answer : a) Formation of root nodules

The eukaryotic nuclear chromosomal DNA (A) Is a linear and unbranched molecule (B) Is not associated with a specific membranous organelle (C) Is not replicated semiconservatively (D) Is about of the same size as each prokaryotic chromoses

Description : The eukaryotic nuclear chromosomal DNA (A) Is a linear and unbranched molecule (B) Is not associated with a specific membranous organelle (C) Is not replicated semiconservatively (D) Is about of the same size as each prokaryotic chromoses

Last Answer : Answer : A

The correct sequence of cell organelles during photorespiration is

Description : The correct sequence of cell organelles during photorespiration is

Last Answer : The correct sequence of cell organelles during photorespiration is A. Chloroplast, ... Chloroplast , Rough Endoplasmic reticulum, Dictyosomes

The correct sequence of cell organelles during photorespiration is (a) chloroplast, Golgi-bodies, mitochondria (b) chloroplast, rough endoplasmic reticulum, dictyosomes (c) chloroplast, mitochondria, peroxisome (d) chloroplast, vacuole, peroxisome.

Description : The correct sequence of cell organelles during photorespiration is (a) chloroplast, Golgi-bodies, mitochondria (b) chloroplast, rough endoplasmic reticulum, dictyosomes (c) chloroplast, mitochondria, peroxisome (d) chloroplast, vacuole, peroxisome.

Last Answer : (c) chloroplast, mitochondria, peroxisome

The correct sequence of cell organelles during photorespiration is (1) Chloroplast, -vacuole, -peroxisome (2) Chloroplast,-Golgibodies,-mitochondria (3) Chloroplast,-Rough Endoplasmic reticulum,-Dictyosomes (4) Chloroplast,-mitochondria,-peroxisome

Description : The correct sequence of cell organelles during photorespiration is (1) Chloroplast, -vacuole, -peroxisome (2) Chloroplast,-Golgibodies,-mitochondria (3) Chloroplast,-Rough Endoplasmic reticulum,-Dictyosomes (4) Chloroplast,-mitochondria,-peroxisome

Last Answer : (4) Chloroplast,-mitochondria,-peroxisome

Why do cell walls absorb water ?

Description : Why do cell walls absorb water ?

Last Answer : Plant cell walls absorb water. Because in the case of plants the cell walls are colloidal substances. And different types of colloidal substances exist in plants. Such as starch , gelatin , cellulose etc. These substances are able to absorb water due to their colloidal properties.

In which process of plant protoplasm and cell wall absorbs water ?

Description : In which process of plant protoplasm and cell wall absorbs water ?

Last Answer : The plant absorbs water in the process of protoplasm and cell wall adsorption.

Which cell acts as a semi-permeable screen in a cell ?

Description : Which cell acts as a semi-permeable screen in a cell ?

Last Answer : Answer : The plasma membrane in a cell acts as a semipermeable membrane.

What is the cell wall made of ?

Description : What is the cell wall made of ?

Last Answer : The cell wall is made up of cellulose.

Which of the following are true archaebacteria? (1) Extreme halophiles (2) Extreme thermophyles (3) Methanogens (4) Presence of peptidoglycan cell wall Ans. (a) 43; Which of the following are endangered plants ? (1) Saintpaulia ionantha (2) Ceratozamia hildae (3) Punica granatum (4) Senecio hadrasomum

Description : Which of the following are true archaebacteria? (1) Extreme halophiles (2) Extreme thermophyles (3) Methanogens (4) Presence of peptidoglycan cell wall Ans. (a) 43; Which of the following are ... plants ? (1) Saintpaulia ionantha (2) Ceratozamia hildae (3) Punica granatum (4) Senecio hadrasomum

Last Answer : Ans. ((c))

Consider the following statement: (1) In plant cells, cytokinesis start with the formation of the phragmoplast (2) Phragmoplast comprises intrazonal microtubules and Golgi vesicles (3) Primary cell wall is produced by microtubules (4) Phragmoplast is formed by nucleus

Description : Consider the following statement: (1) In plant cells, cytokinesis start with the formation of the phragmoplast (2) Phragmoplast comprises intrazonal microtubules and Golgi vesicles (3) Primary cell wall is produced by microtubules (4) Phragmoplast is formed by nucleus

Last Answer : Ans. ((a))

Which of the following statement is correct? (1) The causal organism for foolish seedling disease is the source of gibberellin (2) Abscisic acid is a growth promoter (3) The ratio of auxin : cytokinin control cell differentiation (4) Bolting of cabbage can be induced by treatment with IAA

Description : Which of the following statement is correct? (1) The causal organism for foolish seedling disease is the source of gibberellin (2) Abscisic acid is a growth promoter (3) The ratio of auxin : cytokinin control cell differentiation (4) Bolting of cabbage can be induced by treatment with IAA

Last Answer : Ans. ((d))

Cell ‘A’ with O.P = 10 atm and T.P =5 atm is in contact with cell ‘B’ having O.P = 15 atm and T.P = 12 atm. The flow of water will be: (a) From A to B (b) Equal flow (c) From B to A (d) No flow

Description : Cell ‘A’ with O.P = 10 atm and T.P =5 atm is in contact with cell ‘B’ having O.P = 15 atm and T.P = 12 atm. The flow of water will be: (a) From A to B (b) Equal flow (c) From B to A (d) No flow

Last Answer : Ans. ((c))

Colchicines bring about: (a) Polyploidy (b) Cell division (c) Cell elongation (d) Cell differentiation

Description : Colchicines bring about: (a) Polyploidy (b) Cell division (c) Cell elongation (d) Cell differentiation

Last Answer : Ans. ((a))

The process by which the amount of DNA, RNA and protein can be known at a time is: (a) Cell fractionation (b) Autoradiography (c) Phase-contrast microscopy (d) Tissue culture

Description : The process by which the amount of DNA, RNA and protein can be known at a time is: (a) Cell fractionation (b) Autoradiography (c) Phase-contrast microscopy (d) Tissue culture

Last Answer : Ans. ((b))

The cell wall of both bacteria and cyanobactena contains: (a) Lipid (b) Pectin (c) Protein (d) muramic acid

Description : The cell wall of both bacteria and cyanobactena contains: (a) Lipid (b) Pectin (c) Protein (d) muramic acid

Last Answer : Ans. ((d))

If a sporangium derived from a single cell is called (a) Leptosporangiate (b) Eusporangiate (c) Heterosporangiate (d) None of the above

Description : If a sporangium derived from a single cell is called (a) Leptosporangiate (b) Eusporangiate (c) Heterosporangiate (d) None of the above

Last Answer : Ans. ((a))

In angiosperms regarding development of microgametophyte each microspore mother cell undergoes (a) Mitosis to produce 4 microspores (b) Two successive mitosis to form 4 microspores (c) Two successive meiotic division to form 4 microspores (d) Meiosis to produce 4 haploid microspores

Description : In angiosperms regarding development of microgametophyte each microspore mother cell undergoes (a) Mitosis to produce 4 microspores (b) Two successive mitosis to form 4 microspores (c) Two successive meiotic division to form 4 microspores (d) Meiosis to produce 4 haploid microspores

Last Answer : Ans. ((d))

In spite of several angiospermic features Gnetum is a gymnosperm because…. a) polyembryony is a common features b) prothallial cell is present in the male gametophyte c) seed is naked d) stem exhibit anomalous secondary growth

Description : In spite of several angiospermic features Gnetum is a gymnosperm because…. a) polyembryony is a common features b) prothallial cell is present in the male gametophyte c) seed is naked d) stem exhibit anomalous secondary growth

Last Answer : c) seed is naked

Cell sap is found inside a. Protoplasm b. Cytoplasm c. Nucleoplasm d. Vacuole

Description : Cell sap is found inside a. Protoplasm b. Cytoplasm c. Nucleoplasm d. Vacuole

Last Answer : d. Vacuole

When the embryo develops from haploid egg cell without fertilization, the phenomenon is called as

Description : When the embryo develops from haploid egg cell without fertilization, the phenomenon is called as

Last Answer : When the embryo develops from haploid egg cell without fertilization, the phenomenon is called as – Haploid parthenogenesis

When a diploid embryosac is formed from a megaspore mother cell without meiosis, it is called as

Description : When a diploid embryosac is formed from a megaspore mother cell without meiosis, it is called as

Last Answer : When a diploid embryosac is formed from a megaspore mother cell without meiosis, it is called as – Diplospory

During microsporogenesis, successive type of cell division is found in

Description : During microsporogenesis, successive type of cell division is found in

Last Answer : During microsporogenesis, successive type of cell division is found in – Monocots

Egg cell without synergids is found in embryosac of

Description : Egg cell without synergids is found in embryosac of

Last Answer : Egg cell without synergids is found in embryosac of – Plumbagella type

Apical cell theory best explains the development in

Description : Apical cell theory best explains the development in

Last Answer : Apical cell theory best explains the development in – Cryptogams

Give an account on suicidal bags of the cell.

Description : Give an account on suicidal bags of the cell. 

Last Answer : Ans: These are Lysosomes. They have single unit membrane and formed from E.R. and Golgi complex. These were discovered by de Duve. They are rich in hydrolytic enzymes and play a role in digestion. ... lysosomes can destroy the contents of the same cell they are called as Suicidal bags of the cell.

How do you identify a meristem cell and permanent cell under microscope.

Description : How do you identify a meristem cell and permanent cell under microscope.  

Last Answer : Ans:  

If there are 16 chromosomes in the cell of an angiospermic plant, how many chromosomes are there in the perisperm and endosperm cell

Description : If there are 16 chromosomes in the cell of an angiospermic plant, how many chromosomes are there in the perisperm and endosperm cell  

Last Answer : Ans: 16 in perisperm as it is diploid and 24 in endosperm as it is triploid  

What is the significance of S-phase of cell cycle?

Description : What is the significance of S-phase of cell cycle? 

Last Answer : Ans: During S phase there is doubling of DNA due to semiconservative replication of DNA. The two chromatids of chromosomes are formed at the end of this stage. 

In a cell haploid chromosome number is 15. What number is found in Pollen grain, Zygote, Primary endosperm nucleus and Colchicine treated zygote.

Description : In a cell haploid chromosome number is 15. What number is found in Pollen grain, Zygote, Primary endosperm nucleus and Colchicine treated zygote. 

Last Answer : Ans: 15 in pollen grain, 30 in zygote, 45 in Primary Endosperm nucleus and 60 in colchicine treated zygote.

What is the role of golgi complex in cell division?

Description : What is the role of golgi complex in cell division?

Last Answer : Ans: During cell division the vesicles of Golgi are involved in the formation of cell plate at the equatorial region which eventually forms the middle lamellum. In this way Golgi plays a role in cytokinesis.