Which of the following waste products in grasshopper is not excreted and is used in other metabolic activities?
Carbon dioxide
Water
Uric acid
Faeces
Select the animal that exhibits retrogressive metamorphosis.
Bufo
Amphioxus
Limulus
Herdmania
Which one of the following is not a mammalian character?
Presence of milk producing glands
Skin is unique in possessing hair
Presence of external ears called pinnae
Homodont type of dentition
Retrogressive metamorphosis occurs in
Hemichordata
Cephalochordata
Urochordata
Vertebrata
Physalia is a coelenterate which is also known as
sea pen
sea fan
Portuguese man of war
sea anemone
Some salient features and phyla of organisms are given below. Select the option which shows the correct combination of organism, its phylum and salient features.
(1) Hydra
Coelenterata
Bilateral
symmetry
Cnidoblasts
present
(2)Planaria
Platy-
helminthes
High
regeneration
capacity
(3) Ancylo-
stoma
Annelida
Elongated
and worm
shape
(4)Octopus
Mollusca
Radial
External
skeleton of
shell present
Select the correct statement regarding reproduction.
Mating in dogs is synchronised with lunar cycle.
Salamanders always have internal fertilisation.
In Trygon, the male introduces sperms into female through a modified pelvic fin.
Catla has internal fertilisation.
Select the option that correctly matches characteristic features with the group of three animals.
Skeleton of spicules − Sycon, Adamsia, Spongilla
Excretion by flame − Taenia, Fasciola, Ancylostoma
Mouth contains radula − Dentalium, Octopus, Ophiura
Jointed appendages − Limulus, Apis, Laccifer
Among which of the animals urinary bladder is absent?
Frog
Crow
Ostrich
Camel
Gemmule formation is a common mode of asexual reproduction in
Paramecium
Hydra
sponges
yeast
Identify the incorrect match from those given below
(1)
Jelly fish
Aurelia
Scyphozoa
(2)
Paddle worm
Chaetopterus
Polychaeta
(3)
Cray fish
Oniscus
Crustacea
(4)
Acorn worm
Balanoglossus
Enteropneusta
Which of the following is common among mammals?
They do not moult
They have seven cervical vertebrae
They are carnivores
They have ventral nerve cord
Water transport system or canal system is a characteristic feature of which animal?
Spongilla
Asterias
Echinus
Fresh water sponge is the common name of
Sycon
Euspongia
Collar cells are present in the members of which phyla
Echinodermata
Ctenophora
Porifera
Fragmentation is a method of asexual repoduction in
Platyhelminthes
Aschelminthes
Eggs and Sperm are produced by the same individual in case of
Leech
Sponges
Pleurobrachia
All of the above
The digestive system in Meandrina is
Digestion is extracellular only
Digestion is intracellular only
Digestion is both extracellular and intracellular
Digestion absent as it is a parasite
Both polyp and medusa life forms are present in the life cycle of
Obelia
Physalia
Adamsia
The skeleton of corals is made up of
Calcium silicate
Calcium phosphate
Hydroxyapatite
Calcium carbonate
Which of the following group consists exclusively of cnidarians?
Aplysia, Gorgonia, Spongilla, Hydra
Hydra, pennatula, obelia, Echinus
Hydra, obelia, adamsia, physalia
Scypha, Hydra, adamsia, physalia
Ctenophora is an exclusively marine phylum, the other such phylum is
Ctenophorans are commonly referred to as
Flatworms
Comb jellies
Sea anemone
Cnidaria
The number of ciliated rows present in Comb jellies are
8
6
4
9
The function of flame cells are
Digestion and excretion
Attachment and osmoregulation
Anchorage and excretion
Excretion and osmoregulation
Presence of flame cells is a characteristic feature of
Taenia
Nereis
Hirudinaria
Pheretima
Which of the following is not an excretory structure found in invertebrates?
Flame cells
Malpighian tubules
Nephridia
Kidney
Nematocytes are present in
Which of the following is dioecious?
Fasciola
Ascaris
Earthworm
Which of the following is called pearl oyster?
Dentalium
Pinctada
Pila
Aplysia
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