Refer the given figures A, B, C and D and identify the option which shows their correct name.
A - Pleurobrachia, B - Cnidoblast, C - Aurelia, D - Adamsia
A - Aurelia, B - Adamsia, C - Cnidoblast, D - Pleurobrachia
A - Cnidoblast, B - Pleurobrachia, C - Adamsia, D - Aurelia
A - Adamsia, B - Aurelia, C - Pleurobrachia, D - Cnidoblast
Correct Answer :
B. A - Aurelia, B - Adamsia, C - Cnidoblast, D - Pleurobrachia
Aurelia is a genus of scyphozoan jellyfish (Cnidaria, Scyphozoa). Adamsia is a genus of sea anemones. It is usually found growing on a gastropod shell inhabited by the hermit crab, Pagurus prideaux. A cnidocytes (also known as a cnidoblast or nematocyte) is an explosive cell containing one giant secretory organelle that defines the phylum Cnidaria (corals, sea anemones, hydrae, jellyfish, etc.). Pleurobranchus is a genus of sea slugs, specifically side-gill slugs, marine gastropod mollusc.
Related Questions
Which of the following is a fresh water sponge?
Sycon
Euspongia
Spongilla
Pleurobrachia
Read the following statements and answer the question.
(i) They are exclusively marine, radially symmetrical, diploblastic organisms with tissue level of organisation.
(ii) Body bears eight external rows of ciliated comb plates, which help in locomotion.
(iii) Digestion is both extracellular and intracellular.
(iv) Reproduction takes place only by sexual means.
Which of the following phylum is being described by above statements?
Platyhelminthes
Arthropoda
Mollusca
Ctenophora
Column I contains zoological names of animals and column II contains their common name. Match the following and choose the correct option.
| Column -I | Column- II |
|---|---|
| A. Physalia | I. Sea anemone |
| B. Meandrina | II. Brain coral |
| C. Gorgonia | III. Sea fan |
| D. Adamsia | IV. Portuguese man-of-war |
A III; B II; C I; D IV
A IV; B III; C II; D I
A IV; B II; C III; D I
A II; B III; C I; D IV
Which of the following feature in birds indicates their reptilian ancestory ?
Eggs with a calcareous shell
Scales on their hind limbs
Four-chambered heart
Two special chambers-crop and gizzard in their digestive tract
Refer the following animals and identify those which have a fluid filled body cavity with a complete lining derived from mesoderm.
(i) Sycon (ii) Butterfly
(iii) Nereis (iv) Sea fan
(v) Scorpion (vi) Pila
(i) and (iii) only
(ii) and (iv) only
(ii), (iii), (v) and (vi) only
All of these
Which of the following statement(s) is/are correct regarding phylum coelenterata?
(i) They are aquatic, mostly marine, sessile or freeswimming, radially symmetrical animals.
(ii) They have a central gastro-vascular cavity with a single opening called hypostome.
(iii) Digestion is extracellular and intracellular.
(iv) Examples are Sycon, Spongilla and Euspongia.
(i) and (ii)
(i) and (iv)
(i), (ii) and (iii)
All of these
Tracheae of cockroach and mammal are similar in having
paired nature.
non-collapsible walls.
ciliated inner lining.
origin from head.
Which of the following statement is incorrect?
Platyhelminthes has incomplete digestive system.
In coelenterates, the arrangement of cells is more complex.
Nereis is monoecious but earthworms and leeches are dioecious.
Simple and compound eyes are present in the animals of those phylum whose over two-thirds of all named species on earth are arthropods.
A student brought home a strange animal which he found outside under a rock. It had moist skin, a complete digestive tract, a ventral nerve cord, and had gone through torsion. Identify the phylum of the animal.
Porifera
Annelida
Mollusca
Echinodermata
Examine the figures A, B and C. In which one of the four options all the items A, B and C are correctly identified ?
A - Sycon, B - Euspongia, C - Spongilla
A - Euspongia, B - Spongilla, C - Sycon
A - Spongilla, B - Sycon, C - Euspongia
A - Euspongia, B - Sycon, C - Spongilla
Refer the following statement and answer the question. 'Name of X is derived from stinging capsules. It exhibits metagenesis containing two body forms in which sessile and cylindrical form is called Y and umbrella shaped and free swimming is called Z. Identify X, Y, and Z.
X - Coelenterate, Y - Polyp, Z - Medusa
X - Cnidarian, Y - Medusa, Z - Polyp
X - Ctenophora, Y - Radula, Z - Hypostome
X - Porifera, Y - Osculum, Z - Radula
Which one of the following categories of animals is correctly described with no single exception in it?
In chondrichthyes notochord is persistent throughout life.
All mammals are viviparous and possess diaphragm for breathing.
All sponges are marine.
All reptiles possess scales, have a three chambered heart and are cold blooded (poikilothermal).
In amphibians, respiration occurs through
gills
lungs
skin
all of these
Which of the following is a living fossil?
Balanoglossus
Echinus
Ancylostoma
Limulus
Which of the follwoing statement(s) is/are correct?
(i) Organ systems in different group of animals show various patterns of complexities.
(ii) The digestive system in platyhelminthes has only a single opening to the outside of the body that serve as both mouth and anus, and is hence called complete.
(iii) In open type of circulatory system, the blood is pumped out of the heart and the cells and tissues are directly bathed in it.
(iv) In closed type, the blood is circulated through a series of vessels of varying diameters (arteries, veins and capillaries).
Only (i)
Both (ii) and (iii)
(i), (iii) and (iv)
All of these
Identify the animals shown in the given figures A, B and C from options given below.
A - Octopus; B -Asterias, C- Ophiura
A - Asterias; B - Ophiura, C- Octopus
A - Echinus; B - Octopus C - Ophiura
A - Ophiura; B - Echinus, C- Octopus
Which of the following phylum is being described by the given statements?
(i) These are primitive multicellular animals and have cellular level of organization.
(ii) Digestion is intracellular.
(iii) They have a water transport or canal system.
(iv) They reproduce asexually by fragmentation and sexually by formation of gametes.
Porifera
Ctenophora
Coelenterata
Platyhelminthes
Which of the following characteristic distinguish arthropoda from annelids and molluscs ?
An external skeleton made of chitin (a polysaccharide) and protein rather than a shell made chiefly of mineral salts.
Subdivision of the legs into movable segments.
Distinct group of muscles, derived from many body segments, that move the separate parts of the exoskeleton.
All of the above
Match the features given in column I with their examples given in column II and choose the correct match from the option given below.
| Column-I | Column-II |
|---|---|
| (Features) | (Examples) |
| A. Pseudocoelomates | a. Hydra, Adamsia |
| B. Diploblastic | b. Ctenoplana, Aurelia |
| C. Cellular level of | c. Ascaris, Wuchereria organization |
| D. Radial symmetry | d. Sycon, Spongilla |
| E. Metamerism | e. Pheretima, Neries |
A - e, B - b, C - d, D - c, E - a
A - c, B - a, C - d, D - b, E - e
A - b, B - a, C - c, D - e, E - d
A - c, B - b, C - d, D - a, E - e
Match the phylum given in column - I with the special features present in them given in column - II and choose the correct option.
| Column -I | Column- II |
|---|---|
| (Phylum) | (Special features present) |
| A. Porifera | I. Mammary glands |
| B. Mollusca | II. Cloaca |
| C. Ctenophora | III. Choanocytes |
| D. Amphibia | IV. Radula |
| E. Mammalia | V. Comb plates |
A III; B IV; C V; D II; E I
A IV; B III; C V; D II; E I
A III; B IV; C II; D V; E I
A III; B V; C IV; D II; E I
The transition from aquatic to terrestrial lifestyles required many adaptations in the vertebrate lineage. Which of the following is not one of those adaptations ?
Switch from gill respiration to air-breathing lungs.
Improvements in water resistance of skin.
Alteration in mode of locomotion.
Development of feathers for insulation.
Which one of the following groups of animals is correctly matched with its characteristic feature without even a single exception ?
Reptilia : possess 3 - chambered heart with one incompletely divided ventricle.
Chordata : Possess a mouth provided with an upper and lower jaw.
Chondrichthyes : Possess cartilaginous endoskeleton.
Mammalia : Give birth to young one.
Match the types of animals given in column I with their examples given in column II and choose the correct option.
| Column -I | Column -II |
|---|---|
| (Types of animals) | (Examples) |
| A. Limbless reptiles | I. Elephant |
| B. Jawless vertebrates | II. Lamprey |
| C. Flightless bird | III. Ichthyophis |
| D. Largest | IV. Ostrich terrestrial animal |
| E. Limbless amphibia | V. Cobra |
A II; B V; C IV; D I; E III
A V; B II; C IV; D I; E III
A V; B II; C I; D IV; E III
A V; B IV; C II; D I; E III
Which one of the following statement regarding coelom of given animals is correct?
Round worms (aschelminthes) are pseudocoelomates.
Molluscs are acoelomates.
Insects are pseudocoelomates.
Flatworms (platyhelminthes) are coelomates.
Select the incorrect feature of mollusca from the given statements.
- Terrestrial or aquatic animals having cellular system level of organization.
- Radial symmetrical and acoelomate animals and possesses two germinal layers.
- A file like rasping organ called radula is present.
- Usually dioecious and viviparous animals.
- Examples include Pila, Octopus, and Dentalium.
(i) and (ii) only
(ii) and (iv) only
(i), (ii) and (iv) only
All the five statements.
Which of the following is not a characteristic feature of kingdom animalia ?
Storage of carbohydrates as starch.
Multicellularity.
Obtaining nutrients by ingestion.
Having eukaryotic cells without walls.
Refer the figures A, B, C and D given below. Which of the following options shows the correct name of the animals shown by the figures A, B, C and D ?
A – Locust, B – Scorpion, C – Prawn, D – Pila
A – Locust, B – Prawn, C – Scorpion, D – Pila
A – Locust, B – Scorpion, C – Prawn, D – Snail
A – Butterfly, B – Scorpion, C – Prawn, D – Pila
A file like rasping organ for feeding, called radula, present in the phylum __________.
arthropoda
mollusca
echinodermata
chordata
Which of the following class is being correctly described by given statements (i - iv)?
(i) All living members of this class are ectoparasites on some fishes.
(ii) They have a sucking and circular mouth without jaws.
(iii) Circulation is of closed type.
(iv) They are marine but migrate for spawning to fresh water. After spawing, within a few days they die.
Cyclostomata
Chondrichthyes
Osteichthyes
Amphibia
Which of the following is a poisonous snake?
Naja (Cobra)
Bangarus (Krait)
Viper (Viper)
All of these