C4 pathway is a more efficient photosynthetic pathway than C3, because of
1. lower photorespiration rate
2.cells contain more chloroplasts in leaves
3.larger leaf area
4. spore formation
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Coenobium refers to
1.a group of filaments
2.Palmelloid form
3.A hollow spherical colony
4.None of these
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Find the incorrect match
1.Laminaria – Flattened leaf like thallus
2.Volvox – Colonial, non flagellated
3. Chlorella – Unicellular, non flagellated
4.Chlamydomonas – Unicellular flagellated
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Find the incorrect statement about Volvox
1.Sexual reproduction is oogamous
2.true coelom and no metamerism
3.somatic cells are non flagellated
4.phototaxis movement is present
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Food reserve in Dinoflagellates is
1.Alginic acid
2.Fucoxanthin
3. Starch
4.Mannitol
Posted Date:-2021-02-22 06:37:11
In Chlorophyta, structure for protein and starch reserve is
1.Pyrenoid
2. Eye spot
3. Volutin
4.Paramylum
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In Lac-operon, the gene product of LacA gene is
1. Beta-galactoside isomerase
2.Beta-galactoside permease
3. Beta-galactoside transacetylase
4. Beta-galactosidase
Posted Date:-2021-02-22 06:37:11
In which of the following organisms, the cell wall is made up of two overlapping shells?
1. Chrysophytes
2.Euglenoids
3. Slime moulds
4. Dinoflagellates
Posted Date:-2021-02-22 06:37:11
Ketogenesis occurs primarily in ______ of liver cells
1.Mitochondria
2.Cytosol
3.Endoplasmic reticulum
4.Golgi apparatus
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Organs that can utilise energy formed in ketogenesis are
1. Brain
2. Skeletal muscle
3.Heart
4.All of the above
Posted Date:-2021-02-22 06:37:11
Protozoa are classified on the basis of
1. locomotory organelle
2.shape
3.number of nuclei
4.size
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The final product of C4 pathway is
1.Malate
2. Oxalate
3.Acetate
4. Aspartate
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Volvox and Chlamydomonas are similar because they
1. belong to Chlorophyta
2.both are motile
3. both (a) and (b)
4.none of the above
Posted Date:-2021-02-22 06:37:11
Which of the following is true about bundle sheath cells present in the leaves having Kranz anatomy?
1.they have thin walls with many intercellular spaces and chloroplasts are absent
2.they have thin walls with no intercellular spaces and many chloroplasts
3.they have thick walls with many intercellular spaces and few chloroplasts
4.they have thick walls with no intercellular spaces and many chloroplasts
Posted Date:-2021-02-22 06:37:11
Which of the following organisms will vanish if all the ponds and puddles are destroyed?
1.Plasmodium
2. Trypanosoma
3.Leishmania
4.Ascaris
Posted Date:-2021-02-22 06:37:11
Which of the following pigments are not present in Dinoflagellates?
1. Fucoxanthin
2.Chlorophyll a
3.Chlorophyll b
4.Chlorophyll c
Posted Date:-2021-02-22 06:37:11
Which of the following produce acetyl CoA directly
1. Lysine
2.Phenylalanine
3.Isoleucine
4. Alanine
Posted Date:-2021-02-22 06:37:11
Activated fatty acid is transported to mitochondria from cytosol by
1. Creatinine
2.Carnitine
3. Creatine
4.Clathrin
Posted Date:-2021-02-22 06:37:11
Algae with motile colony is
1. Nostoc
2.Spirogyra
3.Chlamydomonas
4.Volvox
Posted Date:-2021-02-22 06:37:11
Brain derives energy from ketogenesis, if glucose is
1.less
2. high
3.constant
4. zero
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C4 pathway takes place in
1. Xylem
2.Bundle sheath cells
3. Phloem
4.Mesophyll cells
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Dinoflagellates are
1.biflagellate
2.uniflagellate
3.they have many flagella
4.non flagellate
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Dinoflagellates are
1.Photosynthetic
2.Holophytic
3.Autotrophic
4.All of these
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Dinoflagellates belong to
1. Monera
2. Protista
3.Fungi
4. Animalia
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In C4 plants, Calvin cycle occurs in
1.chloroplasts present in the grana of bundle sheath
2.chloroplasts present in the grana of mesophyll
3.chloroplasts present in the stroma of mesophyll
4. chloroplasts present in the stroma of bundle sheath
Posted Date:-2021-02-22 06:37:11
In leaves with Kranz anatomy, formation of malic acid during CO2 fixation occurs in
1.epidermis
2.phloem
3. mesophyll
4. bundle sheath
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In Amoeba and Paramecium, the cell organelle for osmoregulation is
1.nucleus
2. body surface
3.contractile vacuole
4.pseudopodia
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Ketone bodies are formed from
1.Acetone
2. Acetyl CoA
3.Acetoacetate
4.HCl
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Marine phytoplankton is mostly represented by
1.Brown algae
2.Green algae
3.Seaweeds
4.Diatoms and Dinoflagellates
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Most of the Dinoflagellates are
1. Multicellular
2. Unicellular
3.Zooflagellates
4. both (a) and (b)
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Organ of defense in protozoans is
1.statocysts
2.trichocysts
3.otocysts
4.nematocysts
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Sexual reproduction in Volvox is
1. Isogamous
2.Anisogamous
3. Oogamous
4.None of the above
Posted Date:-2021-02-22 06:37:11
The chlorophyll pigment present in Volvox are
1.Chlorophyll a
2.Chlorophyll b
3.Chlorophyll e
4. both (a) and (b)
Posted Date:-2021-02-22 06:37:11
The chloroplast present in Volvox is
1.cup-shaped
2.ribbon-shaped
3.girdle-shaped
4.star-shaped
Posted Date:-2021-02-22 06:37:11
The correct option regarding the lac operon in E.coli from the following is
1.Lac operon is switched on in the absence of lactose
2.Lac repressor binds to the lac promoter
3. β-galactosidase is the only enzyme produced in large quantities when lac operon is turned on
4.lac operon messenger RNA is a polycistronic mRNA
Posted Date:-2021-02-22 06:37:11
The difference between C3 and C4 pathway is
1.photorespiration
2.Calvin cycle
3.respiration
4. glycolysis
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The function of pusule in Dinoflagellate is
1.Osmoregulation
2. Food production
3.Food storage
4.Movement
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This condition in lac operon facilitates the condition of lac genes being transcribed at high levels
1. low glucose, high lactose
2. low glucose, low lactose
3.high glucose, high lactose
4.high glucose, low lactose
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Unicellular eukaryotes are grouped in
1. Monera
2.Protista
3. Archaea
4. Fungi
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Urine of a person contains abnormal quantities of ________ during prolonged fasting
1.amino acids
2.ketones
3.glucose
4.fats
Posted Date:-2021-02-22 06:37:11
Volvox belongs to which of the following classes of algae?
1.Chlorophyceae
2.Phaeophyceae
3.Rhodophyceae
4.Chrysophyceae
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When the rate of synthesis of ketone bodies is more than its utilization, it leads to
1.colour blindness
2.diabetes
3.anaemia
4. ketonemia
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Which class does the malarial parasite belong to?
1.dinophyceae
2.sarcodina
3. ciliata
4.sporozoa
Posted Date:-2021-02-22 06:37:11
Which of the following amino acids are exclusively ketogenic?
1.Asparagine
2.Threonine
3.Proline
4. Leucine
Posted Date:-2021-02-22 06:37:11
Which of the following are ketone bodies
1.acetoacetate
2.acetone
3. ꞵ-hydroxy butyrate
4.all of the above
Posted Date:-2021-02-22 06:37:11
Which of the following is a C4 plant?
1.Wheat
2.Cactus
3.Rice
4.Sugarcane
Posted Date:-2021-02-22 06:37:11
Which of the following is not a characteristic feature of prtozoans
1.binary fission
2.contractile vacuole
3.cell membrane as an outer body covering
4.pseudopodia
Posted Date:-2021-02-22 06:37:11
Which of the following pathways of carbon fixation has phosphoenol pyruvate as a primary CO2 acceptor?
1. C3 plant
2.C4 plants
3.both (a) and (b)
4. C2 plants
Posted Date:-2021-02-22 06:37:11
Which of the following protozoans show bioluminescence?
1.Opaline
2.Noctiluca
3. Paramecium
4.Entamoeba
Posted Date:-2021-02-22 06:37:11
Who discovered the C4 pathway?
1.Melvin Kelvin
2.Hatch and Slack
3.Rudolph Markus
4.Robert Brown
Posted Date:-2021-02-22 06:37:11