80% of the food of sponges consists of
1.Detrital organic particles
2.Zooplankton and small animals
3.Phytoplanktons
4.all of these
A sponge of Antarctica which is more than a meter tall is
1.Scolymastra joubini
2.Euplectella
3.Spongilla
4.Leucoselenia
All of the following are coelomates except
1.Deuterosomes
2.Proterosomes
3.Hemichordates
4.Aschelminthes
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
All the animals of the grade radiata are
1.Diploblastic
2.Triploblastic
3.Both
4.Unicellular
Aschelminthes is also known as
1.Protozoans
2.Eumatazoa
3.Nematodes
4.Protoctist ancestors
Based on molecular data euglenoids are thought to be closely related to
1.Dinoflagellates
2.Zooflagellates
3.Protozoans
4.Algae
Both radial and bilateral symmetry is found in the phylum
1.Protozoa
2.Porifera
3.Echinodermata
4.None of these
Brown algae are also known as
1.Phaeophyta
2.Rhodophyta
3.Pyrrophyta
4.Chrysophyta
Coelom is lined by
1.Parietal mesoderm
2.Visceral mesoderm
3.Mesoderm
4.Both A & B
Coelom that develops from the archenteron as outpouching is
1.Pseudocoelom
2.Enterocoelom
3.Schizocoelom
4.None of these
Enteron in coelenterates acts as
1.Digestive cavity
2.Body cavity
3.Transporting cavity
4.all of these
Examples of Rhodophytes are
1.Chondrus
2.Polysiphonia
3.Both of these
4.Pinnularia
Golden algae are also known as
1.Chrysophyta
2.Phaeophyta
3.Pyrrophyta
4.Rhodophyta
Gut in pseudocoelomates is made from
1.Ectoderm
2.Mesoderm
3.Endoderm
4.All of these
In acoelomates gut is _____ in origin.
1.Ectodermal
2.Endodermal
3.Mesodermal
4.None of these
In chlorophytes the main energy stores are
1.Cellulose
2.Starch
3.Glycogen
4.All of these
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
In slime molds spores develop into
1.Swarm cells
2.Biflagellated cells
3.Amoeboid reproductive cells
4.All of these
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
In sponges fertilization takes place in
1.Ectoderm
2.Mesenchyme
3.Endoderm
4.Uterus
Inner layers of the sponges are made up of
1.Pinacocytes
2.Choanoderm
3.Choanoytes
4.Pinacoderm
Most dinoflagellates are
1.Unicellular
2.Multicellular
3.Both of these
4.Zooflagellates
Of the following which one is non-cellular in most cases in animals?
1.Mesenchyme
2.Sclerenchyma
3.Chlorenchyma
4.Mesoderm
Of the following which one is not found in series proterostomia.
1.Annelida
2.Arthropoda
3.Mollusea
4.Echinodermata
Of the following which one is not included in Proterostomes?
1.Arthropods
2.Hemichordates
3.Annelids
4.Molluses
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
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
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.
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
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.
Pseudocoelem develops from
1.Blastopore
2.Plastoquinone
3.Blastocoel
4.Splitting of mesoderm
Sperms are _____ in origin.
1.Ectodermal
2.Mesodermal
3.Endodermal
4.None of these
Sperms released in water are carried to the mesenchyme in sponges by
1.Amoeboid cell
2.Stipules
3.Spicules
4.Spines
Spores produced by slime molds are
1.Haploid
2.Diploid
3.Triploid
4.None of these
The animals in which coelom is formed due to splitting of mesocerm are known as
1.Pseudocoelous
2.Schizocoelous
3.Enterocoelous
4.Emphicoelous
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
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
The internal buds are known as
1.Spicules
2.Choanocytes
3.Gemmules
4.None of these
The most important group of producers in marine ecosystem is of
1.Diatoms
2.Euglenoids
3.Dinoflagellates
4.Brown algae
The name animal is derived from the word.
1.Anima
2.Anemia
3.Aname
4.All of these
The radial symmetry is found in the animals of
1.Protozoa
2.Porifera
3.Cnidaria
4.All of these
The single main opening of the sponge cavity is
1.Osculum
2.Ostia
3.Spongocoel
4.None of these
The skeleton of sponges is made up of
1.Calcium
2.Silica
3.Both of these
4.None of these
The skeleton of the sponges is in the form of variously shaped needle like structures called
1.Stripules
2.Spicules
3.Brails
4.Spines
The sponges in which sperms develop first are included in the category of
1.Peritandrous
2.Pertandrous
3.Protendrous
4.Protandrous
The system well - developed in the acoelomate is
1.Excretory system
2.Nervous system
3.Both of these
4.Transport system
Venus flower basket is also known as
1.Sycon
2.Euplectella
3.Leucoselenia
4.Spongilla
Which of the following are motile zooids in cnidarians?
1.Polyps
2.Medusae
3.Both of these
4.None of these
Which of the following is responsible for Irish potato famine?
1.Dinoflagellates
2.Kleps
3.Physarum polycephalum
4.Phytophthora infestans