An example of colonial alga is (a) Volvox (b) Ulothrix (c) Spirogyra (d) Chlorella

An example of colonial alga is
(a) Volvox (b) Ulothrix
(c) Spirogyra (d) Chlorella
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1 Answer

Answer :

(a) Volvox
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Related questions

An example of colonial alga is : (1) Volvox (2) Ulothrix (3) Spirogyra (4) Chlorella

Description : An example of colonial alga is : (1) Volvox (2) Ulothrix (3) Spirogyra (4) Chlorella

Last Answer : (1) Volvox

An alga which can be employed as food for human being is (a) Ulothrix (b) Chlorella (c) Spirogyra (d) Polysiphonia.

Description : An alga which can be employed as food for human being is (a) Ulothrix (b) Chlorella (c) Spirogyra (d) Polysiphonia.

Last Answer : (b) Chlorella

An alga, very rich in protein, is (a) Chlorella (b) Nostoc (c) Spirogyra (d) Ulothrix.

Description : An alga, very rich in protein, is (a) Chlorella (b) Nostoc (c) Spirogyra (d) Ulothrix.

Last Answer : (a) Chlorella

The sexual reproduction is absent in (a) Spirogyra (b) Nostoc (c) Ulothrix (d) Volvox.

Description : The sexual reproduction is absent in (a) Spirogyra (b) Nostoc (c) Ulothrix (d) Volvox.

Last Answer : b) Nostoc

Ulothrix can be described as a (a) filamentous alga lacking flagellated reproductive stages (b) membranous alga producing zoospores (c) filamentous alga with flagellated reproductive stages (d) non-motile colonial alga lacking zoospores.

Description : Ulothrix can be described as a (a) filamentous alga lacking flagellated reproductive stages (b) membranous alga producing zoospores (c) filamentous alga with flagellated reproductive stages (d) non-motile colonial alga lacking zoospores.

Last Answer : (c) filamentous alga with flagellated reproductive stages

Which of the following is an example of parasitic alga? (1) Ulothrix (2) Cephaleuros (3) Oedogonium (4) Sargassum

Description : Which of the following is an example of parasitic alga? (1) Ulothrix (2) Cephaleuros (3) Oedogonium (4) Sargassum

Last Answer : (2) Cephaleuros Explanation: Cephaleuros is a genus of parasitic thalloid algae comprising approximately 14 species. Its common name is red rust. The alga is parasitic on tea, coffee, mango and guava causing damage limited to the area of algal growth on leaves.

Which of the following is an example of parasitic alga ? (1) Ulothrix (2) Cephaleuros (3) Oedogonium (4) Sargassum

Description : Which of the following is an example of parasitic alga ? (1) Ulothrix (2) Cephaleuros (3) Oedogonium (4) Sargassum

Last Answer : Cephaleuros

Which of the following pairs is of unicellular algae? (a) Laminaria and Sargassum (b) Gelidium and Gracilaria (c) Anabaena and Volvox (d) Chlorella and Spirulina

Description : Which of the following pairs is of unicellular algae? (a) Laminaria and Sargassum (b) Gelidium and Gracilaria (c) Anabaena and Volvox (d) Chlorella and Spirulina

Last Answer : (d) Chlorella and Spirulina

Hormogonia are vegetative reproductive structure of: (a) Spirogyra (b) Ulothrix (c) Oscillatoria (d) Yeast

Description : Hormogonia are vegetative reproductive structure of: (a) Spirogyra (b) Ulothrix (c) Oscillatoria (d) Yeast

Last Answer : Ans. ((c))

Hormogonia are the vegetative reproductive structures of (a) Chlamydomonas (b) Spirogyra (c) Oscillatoria (d) Ulothrix

Description : Hormogonia are the vegetative reproductive structures of (a) Chlamydomonas (b) Spirogyra (c) Oscillatoria (d) Ulothrix

Last Answer : Ans. ((c))

Which one of the following is commonly known as Pond Silk'? (1) Spirogyra (2) Rhizopus (3) Yeast (4) Ulothrix

Description : Which one of the following is commonly known as Pond Silk'? (1) Spirogyra (2) Rhizopus (3) Yeast (4) Ulothrix

Last Answer : (1) Spirogyra Explanation: Pond silk is the common name of Spirogyra (algae) because it is very slimy in shape. It is also known as pond silk, water silk, pond scum or mermaid's trees because of its bright green silky appearance. Its filaments shine like silk due to the presence of mucilage.

In Ulothrix/Spirogyra, reduction division (meiosis) occurs at the time of (a) gamete formation (b) zoospore formation (c) zygospore germination (d) vegetative reproduction.

Description : In Ulothrix/Spirogyra, reduction division (meiosis) occurs at the time of (a) gamete formation (b) zoospore formation (c) zygospore germination (d) vegetative reproduction.

Last Answer : (c) zygospore germination

Isogamous condition with non-flagellated gametes is found in (a) Volvox (b) Fucus (c) Chlamydomonas (d) Spirogyra.

Description : Isogamous condition with non-flagellated gametes is found in (a) Volvox (b) Fucus (c) Chlamydomonas (d) Spirogyra.

Last Answer : (d) Spirogyra.

Which one of the following shows isogamy with non-flagellated gametes? (a) Sargassum (b) Ectocarpus (c) Ulothrix (d) Spirogyra

Description : Which one of the following shows isogamy with non-flagellated gametes? (a) Sargassum (b) Ectocarpus (c) Ulothrix (d) Spirogyra

Last Answer : (d) Spirogyra

Columella is a specialized structure found in the sporangium of (a) Spirogyra (b) Ulothrix (c) Rhizopus (d) none of these.

Description : Columella is a specialized structure found in the sporangium of (a) Spirogyra (b) Ulothrix (c) Rhizopus (d) none of these.

Last Answer : (c) Rhizopus

Which one of the following is commonly known as ‘Pond Silk’? (1) Spirogyra (2) Rhizopus (3) Yeast (4) Ulothrix

Description : Which one of the following is commonly known as ‘Pond Silk’? (1) Spirogyra (2) Rhizopus (3) Yeast (4) Ulothrix

Last Answer : Spirogyra

Volvox reproduction -Biology

Description : Volvox reproduction -Biology

Last Answer : answer:

Where do volvox live? -Biology

Description : Where do volvox live? -Biology

Last Answer : answer:

Volvox heterotrophic or autotrophic. -Biology

Description : Volvox heterotrophic or autotrophic. -Biology

Last Answer : answer:

Is a volvox multi celled or single celled?

Description : Is a volvox multi celled or single celled?

Last Answer : What is the answer ?

How many cells do volvox?

Description : How many cells do volvox?

Last Answer : What is the answer ?

Which one of the following is the earliest land plant? (a) Rhynia (b) Cycas (c) Ulothrix (d) Synchytrium

Description : Which one of the following is the earliest land plant? (a) Rhynia (b) Cycas (c) Ulothrix (d) Synchytrium

Last Answer : Ans. ((a))

Describe locomotion of Euglena and volvox?

Description : Describe locomotion of Euglena and volvox?  

Last Answer : Locomotion in Euglena: Euglena move with the help of flagellum. Whipping action of flagellum caused it to rotate and at the same time it move forward. It does not move in straight line but it moves ... path. Locomotion of Volvox: It floats freely over water surface and looks like a minute ball.  

The correct sequence of plants in a hydrosere is (a) Volvox → Hydrilla → Pistia → Scirpus → Lantana → Oak (b) Pistia → Volvox → Scirpus → Hydrilla → Oak → Lantana (c) Oak → Lantana → Volvox → Hydrilla → Pistia → Scirpus (d) Oak → Lantana → Scirpus → Pistia → Hydrilla → Volvox.

Description : The correct sequence of plants in a hydrosere is (a) Volvox → Hydrilla → Pistia → Scirpus → Lantana → Oak (b) Pistia → Volvox → Scirpus → Hydrilla → Oak → Lantana (c) Oak → Lantana → Volvox → Hydrilla → Pistia → Scirpus (d) Oak → Lantana → Scirpus → Pistia → Hydrilla → Volvox.

Last Answer : (a) Volvox → Hydrilla → Pistia → Scirpus → Lantana → Oak

Read the following five statements (A – E) and answer as asked next to them. (A) In Equisetum, the female gametophyte is retained on the parent sporophyte. (B) In Ginkgo, male gametophyte is not independent. (C) The sporophyte in Riccia is more developed than that in Polytrichum. (D) Sexual reproduction in Volvox is isogamous. (E) The spores of slime moulds lack cell walls. How many of the above statements are correct? (a) Two (b) Three (c) Four (d) One

Description : Read the following five statements (A - E) and answer as asked next to them. (A) In Equisetum, the female gametophyte is retained on the parent sporophyte. (B) In Ginkgo, male gametophyte is not independent. (C ... . How many of the above statements are correct? (a) Two (b) Three (c) Four (d) One

Last Answer : (d) One

Read the following statements (A – E) and answer the question which follows them. (A) In liverworts, mosses and ferns gametophytes are free-living. (B) Gymnosperms and some ferns are heterosporous. (C) Sexual reproduction in Fucus, Volvox and Albugo is oogamous. (D)The sporophyte in liverworts is more elaborate than that in mosses. (E) Both, Pinus and Marchantia are dioecious. How many of the above statements are correct? (a) Three (b) Four (c) One (d) Two

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Last Answer : (a) Three

Ulothrix filaments produce (a) heterogametes (b) basidiospores (c) isogametes (d) anisogametes

Description : Ulothrix filaments produce (a) heterogametes (b) basidiospores (c) isogametes (d) anisogametes

Last Answer : (c) isogametes

Nuclear membrane is absent in (a) Penicillium (b) Agaricus (c) Volvox (d) Nostoc.

Description : Nuclear membrane is absent in (a) Penicillium (b) Agaricus (c) Volvox (d) Nostoc.

Last Answer : (d) Nostoc.

True nucleus is absent in (a) Vaucheria (b) Volvox (c) Anabaena (d) Mucor.

Description : True nucleus is absent in (a) Vaucheria (b) Volvox (c) Anabaena (d) Mucor.

Last Answer : (c) Anabaena

Nuclear membrane is absent in (1) Nostoc (2) Penicillium (3) Agaricus (4) Volvox

Description : Nuclear membrane is absent in (1) Nostoc (2) Penicillium (3) Agaricus (4) Volvox

Last Answer : (1) Nostoc

Relationship between an alga and the fungus in lichen? -Biology

Description : Relationship between an alga and the fungus in lichen? -Biology

Last Answer : answer:

What is symbiotic relationship between fungus and alga?

Description : What is symbiotic relationship between fungus and alga?

Last Answer : Mutualism because they both benefit

Blue-green alga that causes red blooms is: (a) Anabaena (b) Gleacapsa (c) Trichodesmium (d) Nostoc

Description : Blue-green alga that causes red blooms is: (a) Anabaena (b) Gleacapsa (c) Trichodesmium (d) Nostoc

Last Answer : Ans. ((c))

Every multicellular organism, be it a microscopic alga, a banyan tree or a human being, starts as a single cell called a/an (a) Egg (b) Sperm (c) Nucleus (d) Gene

Description : Every multicellular organism, be it a microscopic alga, a banyan tree or a human being, starts as a single cell called a/an (a) Egg (b) Sperm (c) Nucleus (d) Gene

Last Answer : Ans:(a)

Litmus is obtained from – (1) a bacterium (2) a fungus (3) an alga (4) lichen

Description : Litmus is obtained from – (1) a bacterium (2) a fungus (3) an alga (4) lichen

Last Answer : (4) lichen Explanation: Litmus is a water-soluble mixture of different dyes extracted from lichens, especially Roccellatinctoria. It is often absorbed onto filter paper to produce one of the ... litmus paper is purple. Litmus can also be prepared as an aqueous solution that functions similarly

PGA as the first CO2 fixation product was discovered in photosynthesis of (a) bryophyte (b) gymnosperm (c) angiosperm (d) alga.

Description : PGA as the first CO2 fixation product was discovered in photosynthesis of (a) bryophyte (b) gymnosperm (c) angiosperm (d) alga.

Last Answer : (d) alga.

.Match items in column I with those in columnII. Column I Column II (A) Peritrichous flagellation (J) Ginkgo (B) Living fossil (K) Macrocystis (C) Rhizophore (L) Escherichia coli (D) Smallest flowering plant (M) Selaginella (E) Largest perennial alga (N) Wolffia Select the correct answer from the following. (a) A - L; B - J; C - M; D - N; E - K (b) A - K; B - J; C - L; D - M; E - N (c) A - N; B - L; C - K; D - M; E - J (d) A - J; B - K; C - N; D - L; E - M

Description : .Match items in column I with those in columnII. Column I Column II (A) Peritrichous flagellation (J) Ginkgo (B) Living fossil (K) Macrocystis (C) Rhizophore (L) Escherichia coli (D) Smallest flowering plant (M) Selaginella (E) Largest perennial ... - M; E - J (d) A - J; B - K; C - N; D - L; E - M

Last Answer : (a) A - L; B - J; C - M; D - N; E - K

Lichens are well known combination of an alga and a fungus where fungus has (a) a saprophytic relationship with the alga (b) an epiphytic relationship with the alga (c) a parasitic relationship with alga (d) a symbiotic relationship with alga.

Description : Lichens are well known combination of an alga and a fungus where fungus has (a) a saprophytic relationship with the alga (b) an epiphytic relationship with the alga (c) a parasitic relationship with alga (d) a symbiotic relationship with alga.

Last Answer : (d) a symbiotic relationship with alga.

There exists a close association between the alga and the fungus within a lichen. The fungus (a) provides protection, anchorage and absorption for the algae (b) provides food for the alga (c) fixes the atmospheric nitrogen for the alga (d) releases oxygen for the alga.

Description : There exists a close association between the alga and the fungus within a lichen. The fungus (a) provides protection, anchorage and absorption for the algae (b) provides food for the alga (c) fixes the atmospheric nitrogen for the alga (d) releases oxygen for the alga.

Last Answer : (a) provides protection, anchorage and absorption for the algae

Select the correct combination of the statements (i-iv) regarding the characteristics of certain organisms. (i) Methanogens are archaebacteria which produce methane in marshy areas. (ii) Nostoc is a filamentous blue-green alga which fixes atmospheric nitrogen. (iii)Chemosynthetic autotrophic bacteria synthesize cellulose from glucose. (iv) Mycoplasma lack a cell wall and can survive without oxygenThe correct statements are (a) (ii) and (iii) (b) (i),(ii) and (iii) (c) (ii), (iii) and (iv) (d) (i), (ii) and (iv)..

Description : Select the correct combination of the statements (i-iv) regarding the characteristics of certain organisms. (i) Methanogens are archaebacteria which produce methane in marshy areas. (ii) Nostoc is a filamentous blue-green alga which fixes ... iii) (c) (ii), (iii) and (iv) (d) (i), (ii) and (iv).

Last Answer : (d) (i), (ii) and (iv)

Litmus is obtained from (1) a bacterium (2) a fungus (3) an alga (4) lichen

Description : Litmus is obtained from (1) a bacterium (2) a fungus (3) an alga (4) lichen

Last Answer : lichen

The smallest known prokatyotic organism is – (1) Microcystis (2) Mycoplasma (3) Bacteria (4) Chlorella

Description : The smallest known prokatyotic organism is – (1) Microcystis (2) Mycoplasma (3) Bacteria (4) Chlorella

Last Answer : (2) Mycoplasma Explanation: Mycoplasmas are the smallest and simplest prokaryotes capable of self-replication. Keeping the number of structural elements, metabolic pathways and components of the protein ... to an essential minimum places Myeoplasmas closest to the concept of 'minimum cells'.

Which of the following organism possesses characteristics of a plant and an animal? (1) Euglena (2) Mycoplasma. (3) Paramecium (4) Chlorella

Description : Which of the following organism possesses characteristics of a plant and an animal? (1) Euglena (2) Mycoplasma. (3) Paramecium (4) Chlorella

Last Answer : (1) Euglena Explanation: Most species of Euglena have photosynthesizing chloroplasts within the body of the cell, which en-able them to feed by autotrophy (making energy-containing organic molecules ... carbohydrates, and proteins), like animals. So Euglena have features of both animals and plants.

Which organism is responsible for alcohol fermentation? (1) Chlorella (2) Yeast (3) Agaricus (4) Puccinia

Description : Which organism is responsible for alcohol fermentation? (1) Chlorella (2) Yeast (3) Agaricus (4) Puccinia

Last Answer : (2) Yeast Explanation: Ethanol fermentation, also called alcoholic fermentation, is a biological process which converts sugars such as glucose, fructose, and sucrose into cellular energy, producing ... It is an anaerobic process since Yeasts perform this conversion in the absence of oxygen.

Which of the following is one of the commercial products obtained from Gelidium and Gracilaria and are used to grow microbes and in preparations of icecreams and jellies? (1) Agar (2) Chlorella (3) Spirullina (4) Gymnosperms

Description : Which of the following is one of the commercial products obtained from Gelidium and Gracilaria and are used to grow microbes and in preparations of icecreams and jellies? (1) Agar (2) Chlorella (3) Spirullina (4) Gymnosperms

Last Answer : (1) Agar Explanation: Agar, one of the commercial products obtained from Gelidium and Gracilaria are used to grow microbes and in preparations of ice-creams and jellies.

A free living nitrogen-fixing cyanobacterium which can also form symbiotic association with the water fern Azolla is (a) Tolypothrix (b) Chlorella (c) Nostoc (d) Anabaena.

Description : A free living nitrogen-fixing cyanobacterium which can also form symbiotic association with the water fern Azolla is (a) Tolypothrix (b) Chlorella (c) Nostoc (d) Anabaena.

Last Answer : (d) Anabaena.

Which of the following can be used as a biocontrol agent in the treatment of plant disease? (a) Lactobacillus (b) Trichoderma (c) Chlorella (d) Anabaena

Description : Which of the following can be used as a biocontrol agent in the treatment of plant disease? (a) Lactobacillus (b) Trichoderma (c) Chlorella (d) Anabaena

Last Answer : (b) Trichoderma

The guts of cow and buffalo possess (a) methanogens (b) cyanobacteria (c) Fucus sp. (d) Chlorella sp.

Description : The guts of cow and buffalo possess (a) methanogens (b) cyanobacteria (c) Fucus sp. (d) Chlorella sp.

Last Answer : (a) methanogens

Chlorenchyma is known to develop in the (a) cytoplasm of Chlorella (b) mycelium of a green mould such as Aspergillus (c) spore capsule of a moss (d) pollen tube of Pinus.

Description : Chlorenchyma is known to develop in the (a) cytoplasm of Chlorella (b) mycelium of a green mould such as Aspergillus (c) spore capsule of a moss (d) pollen tube of Pinus.

Last Answer : (c) spore capsule of a moss