Ch-4 Animal Kingdom Flashcards
Segmentation is present in
(A) Annelida
(B) Arthropoda
(C) Chordata
(D) All of the above
(D) All of the above
Digestive system is first completed in which phylum
(A) Arthropoda
(B) Annelida
(C) Platyhelminthes
(D) Aschelminthes
(D) Aschelminthes
Circulatory system is first completed in which phylum
(A) Arthropoda
(B) Annelida
(C) Platyhelminthes
(D) Aschelminthes
(B) Annelida
Respiratory system is first completed in which phylum
(A) Arthropoda
(B) Annelida
(C) Platyhelminthes
(D) Aschelminthes
(A) Arthropoda
How many species of animals have been described till now?
(A) >1.5 million
(B) 1.7-1.8 million
(C) >1.8 million
(D) > 1 million
(D) > 1 million
Read the statement carefully:
Notochord is a mesodermally derived rod like structure formed on the ventral side during embryonic development in some animals (chordates).
Point out if any mis printing is observed in this statement.
(A) origin is not mesodermal
(B) structure is not rod like
(C) dorsal side instead of ventral side
(D) no misprinting is observed in this statement
(C) dorsal side instead of ventral side
Match the columns I and II, and list of animals with their level of organisation and choose the correct sequence.
Column I Column II
a. Organ level p. Pheretima
b. Cellular
aggregate level q. Fasciola
c. Tissue level r. Spongilla
d. Organ system
level s. Obelia
a-(q) , b-(r) , c-(s) , d-(p)
Pheretima- earthworm (Annelida)
Fasciola- liver fluke (Platyhelminthes)
Spongilla- fresh water sponge (Porifera)
Obelia- (Coelenterata/Cnidaria)
Open circulatory system occurs in
(A) earthworm
(B) snail
(C) cockroach
(D) both B and C
(D) both B and C
Cold blooded animals are also called
(A) Ectotherms
(B) Endotherms
(C) Poikilothermic
(D) Both A and C
(D) Both A and C
In which group of animals, a closed circulatory system is present
(A) Arthropoda
(B) Mollusca
(C) Hemichordata
(D) Annelida
(D) Annelida
Conversion of larva into adult is called
(A) metagenesis
(B) metastasis
(C) metamorphosis
(D) metamerism
(C) metamorphosis
Metagenesis- thealternationof generations between sexual andasexualreproduction.
Metastasis- The spread of cancer cells from the place where they first formed to another part of the body
Radius symmetry is shown by
(A) Coelenterata
(B) Ctenophora
(C) Echinodermata
(D) All of the above
(D) All of the above
Triploblastic animals primarily show
(A) radial symmetry
(B) bilateral symmetry
(C) sexual dimorphism
(D) true coelom
(B) bilateral symmetry
(Echinodermata shows radial symmetry in adults and bilateral in larvae. )
Animals which regulate their body temperature are called
(A) warm blooded
(B) homeothermic
(C) Endotherms
(D) All of the above
(D) All of the above
Triploblastic organisation and bilateral symmetry starts from which Phylum during evolution
(A) Porifera
(B) Coelenterata
(C) Aschelminthes
(D) Platyhelminthes
(D) Platyhelminthes
Which one is first evolved in Annelida?
(A) triploblastic development
(B) bilateral symmetry
(C) cephalisation
(D) true coelom
(D) true coelom
Cephalisation- the evolutionary trend toward concentrating nervous tissue, the mouth, and sense organs toward the front end of an animal.
Heart to pump blood evolved for the first time in
(A) annelids
(B) arthropods
(C) roundworms
(D) flatworms
(A) annelids
(Remember earthworm- pheretima)
Roundworms- Aschelminthes
Flatworms- Platyhelminthes
Which one of the following statements is incorrect?
(A) Mesoglea is present in between ectoderm and endoderm in Obelia
(B) radial symmetry is found in Asterias
(C) Fasciola is a pseudocoelomate animal
(D) Taenia is a triploblastic animal
(C) Fasciola is a pseudocoelomate animal
Obelia- Coelenterata/Cnidaria
Asterias- (Star fish) Echinodermata
Fasciola- (liver fluke) Platyhelminthes
Taenia- (tape worm) Platyhelminthes
Body cavity is the cavity present between body wall and gut wall. In some animals the body cavity is not lined by mesoderm. Such animals are called
(A) Acoelomate
(B) Pseudocoelomate
(C) Coelomate
(D) Haemocoelomate
(B) Pseudocoelomate
(Haemocoelomate- the animals in which body cavity is filled with haemolymph)
True segmentation or metamerism means
(A) body is externally and internally divided into segments
(B) each segment of body has serial repetition of at least some organs
(C) Both A and B
(D) there is no repetition of any organ in successive segments
(C) Both A and B
Which of the following sponge is called venus flower basket?
(A) Spongilla
(B) Euspongia
(C) Euplectella
(D) Cliona
(C) Euplectella
Spongilla- fresh water sponge
Euspongia- true/bath sponge
Cliona- boring sponge
In which of the following polyp phase does not found?
(A) Hydra
(B) Obelia
(C) Physalia
(D) Aurelia
(D) Aurelia
Hydra- only polyp (fresh water)
Obelia- both polyp and medusa
Physalia- both polyp and medusa (Portuguese man of war)
Aurelia- only medusa (Jelly fish)
