80% of the food of sponges consists of
1.Detrital organic particles
2.Zooplankton and small animals
3.Phytoplanktons
4.all of these
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A sponge of Antarctica which is more than a meter tall is
1.Scolymastra joubini
2.Euplectella
3.Spongilla
4.Leucoselenia
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All of the following are coelomates except
1.Deuterosomes
2.Proterosomes
3.Hemichordates
4.Aschelminthes
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All phostosynthetic euglenoids lose their chlorophyll when grown in dark and obtain their nutrients heterotrophically this statement is
1.TRUE
2.FALSE
3.May be true may be false
4.Unpredictable
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All the animals of the grade radiata are
1.Diploblastic
2.Triploblastic
3.Both
4.Unicellular
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Aschelminthes is also known as
1.Protozoans
2.Eumatazoa
3.Nematodes
4.Protoctist ancestors
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Based on molecular data euglenoids are thought to be closely related to
1.Dinoflagellates
2.Zooflagellates
3.Protozoans
4.Algae
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Both radial and bilateral symmetry is found in the phylum
1.Protozoa
2.Porifera
3.Echinodermata
4.None of these
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Brown algae are also known as
1.Phaeophyta
2.Rhodophyta
3.Pyrrophyta
4.Chrysophyta
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Coelom is lined by
1.Parietal mesoderm
2.Visceral mesoderm
3.Mesoderm
4.Both A & B
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Coelom that develops from the archenteron as outpouching is
1.Pseudocoelom
2.Enterocoelom
3.Schizocoelom
4.None of these
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Enteron in coelenterates acts as
1.Digestive cavity
2.Body cavity
3.Transporting cavity
4.all of these
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Examples of Rhodophytes are
1.Chondrus
2.Polysiphonia
3.Both of these
4.Pinnularia
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Golden algae are also known as
1.Chrysophyta
2.Phaeophyta
3.Pyrrophyta
4.Rhodophyta
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Gut in pseudocoelomates is made from
1.Ectoderm
2.Mesoderm
3.Endoderm
4.All of these
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In acoelomates gut is _____ in origin.
1.Ectodermal
2.Endodermal
3.Mesodermal
4.None of these
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In chlorophytes the main energy stores are
1.Cellulose
2.Starch
3.Glycogen
4.All of these
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In most triploblasts after embryonic development the three layers are represented as
1.Separate layers of cells
2.Structures formed from them
3.Structures associated with them
4.Their functions in body
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In slime molds spores develop into
1.Swarm cells
2.Biflagellated cells
3.Amoeboid reproductive cells
4.All of these
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In some cases the blastomere can produce complete embryo the cleavage will be
1.Spiral and determinate
2.Radial and indeterminate
3.Spiral and indeterminate
4.Radial and determinate
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In sponges fertilization takes place in
1.Ectoderm
2.Mesenchyme
3.Endoderm
4.Uterus
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Inner layers of the sponges are made up of
1.Pinacocytes
2.Choanoderm
3.Choanoytes
4.Pinacoderm
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Most dinoflagellates are
1.Unicellular
2.Multicellular
3.Both of these
4.Zooflagellates
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Of the following which one is non-cellular in most cases in animals?
1.Mesenchyme
2.Sclerenchyma
3.Chlorenchyma
4.Mesoderm
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Of the following which one is not found in series proterostomia.
1.Annelida
2.Arthropoda
3.Mollusea
4.Echinodermata
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Of the following which one is not included in Proterostomes?
1.Arthropods
2.Hemichordates
3.Annelids
4.Molluses
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Of the following which one is not the characteristic of dinoflagellates
1.Most of them are unicellular
2.They have blooms
3.Their cells are often covered with shells of interlocking cellulose plates impregnated with calcium
4.None of these
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Of the following which one is not the characteristic of green algae?
1.Some green algae possess cell wall with cellulose
2.They are generally accepted as the ancestors of green plants
3.Chlorella is unicellular non-motile green algae
4.None of these
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Of the following which one is not the characteristic of Kingdom Animalia.
1.All animals are ingestive heterotrophs
2.All animals are eukaryotes
3.All animals develop from the dissimilar gametes i.e. large sperm and small egg.
4.It is largest kingdom.
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Of the following which one is not the characteristic of triploblasts.
1.All of them have blood vascular system
2.They may be coelomate pseudocoelomate or acoelomate
3.They are included in grade bilateria
4.All of them have digestive system
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Porifera range in size from
1.Few millimeter wide to more than one meter tall
2.Few centimeter wide to more than one meter tall
3.Few decimeter wide to more than one meter tall
4.One meter wide to more than millimeter tall.
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Pseudocoelem develops from
1.Blastopore
2.Plastoquinone
3.Blastocoel
4.Splitting of mesoderm
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Sperms are _____ in origin.
1.Ectodermal
2.Mesodermal
3.Endodermal
4.None of these
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Sperms released in water are carried to the mesenchyme in sponges by
1.Amoeboid cell
2.Stipules
3.Spicules
4.Spines
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Spores produced by slime molds are
1.Haploid
2.Diploid
3.Triploid
4.None of these
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The animals in which coelom is formed due to splitting of mesocerm are known as
1.Pseudocoelous
2.Schizocoelous
3.Enterocoelous
4.Emphicoelous
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The fate of each blastomere is foretold. The cleavage will be as
1.Spiral and indeterminate
2.Radial and indeterminate
3.Radial and indeterminate
4.Spiral and determinate
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The function of coelom is
1.To increase the size of the animals
2.To help in the functioning of reproductive system
3.To provide space for the development of organs and systems
4.None of these
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The internal buds are known as
1.Spicules
2.Choanocytes
3.Gemmules
4.None of these
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The most important group of producers in marine ecosystem is of
1.Diatoms
2.Euglenoids
3.Dinoflagellates
4.Brown algae
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The name animal is derived from the word.
1.Anima
2.Anemia
3.Aname
4.All of these
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The radial symmetry is found in the animals of
1.Protozoa
2.Porifera
3.Cnidaria
4.All of these
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The single main opening of the sponge cavity is
1.Osculum
2.Ostia
3.Spongocoel
4.None of these
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The skeleton of sponges is made up of
1.Calcium
2.Silica
3.Both of these
4.None of these
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The skeleton of the sponges is in the form of variously shaped needle like structures called
1.Stripules
2.Spicules
3.Brails
4.Spines
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The sponges in which sperms develop first are included in the category of
1.Peritandrous
2.Pertandrous
3.Protendrous
4.Protandrous
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The system well - developed in the acoelomate is
1.Excretory system
2.Nervous system
3.Both of these
4.Transport system
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Venus flower basket is also known as
1.Sycon
2.Euplectella
3.Leucoselenia
4.Spongilla
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Which of the following are motile zooids in cnidarians?
1.Polyps
2.Medusae
3.Both of these
4.None of these
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Which of the following is responsible for Irish potato famine?
1.Dinoflagellates
2.Kleps
3.Physarum polycephalum
4.Phytophthora infestans
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