Test: Animal Kingdom 7 - From Past 28 Years Questions - NEET MCQ

Organisms passively floating on the surface of water are planktons. If floating organisms are animals then it is zooplankton and if plant – phytoplankton.

 Tubipora is organ pipe coral comes under class Anthozia.

Caterpillar larva is a voracious eater, it gets matured and by secreting silk thread changes into pupa & it encloses into silk cocoon

Teredo (shipworm) is the member of class – Bivalvia (double shell plates).
Shipworms are not in fact worms at all, but rather a group of marine mollusc (Eulamellibranchiata) in the family Teredinidae. They bore into submerged wood, and bacteria in a special organ called the gland of Deshayes enable them to digest cellulose. The shipworms belong to several genera of which Teredo is the most commonly mentioned. The best known species is Teredo navalis.

Commensalism is an association between two organisms in which one is benefitted but the other is not harmed.

Tortoise (Testudo) is a member of orderChelonia, Class – Reptiles

Fire bellied toad (Bombina Orientalis) is a member of family discoglossidae of order Anura of class Amphibia. Its belly is red or orange-red

Necturus (Mud puppy) order – Urodela class – Amphibia. It is a species of salamanders that is a part of the genus Necturus.

Typhols is a non poisonous blind snake.

Crop in birds stores & softens food and in pigeons secrete milk.

In birds hind limbs are variously modified for various functions like perching, grasping etc. In the kingfisher they are modified for wading.

Bird vertebrae are heterocoelous. Acoelous vertebrae are found in mammals.

Members of the order Cetacea of class Mammalia are aquatic animals like whales, dolphins having smooth and hairless skin.

It is the middle layer of 3 layered Mucosa (outer muscularis mucosa, middle lamina propria & inner simple columnar epithelium) of intestine. It is made up of a highly vascular connective tissue containing lymphatic nodules.

Gambusia

Animals which are marine, solitary, bell or umbrella shaped belong to class Scyphozoa i.e., Jelly fish.

The eggs of Taenia passes out through human faeces which is eaten by pigs, eggs develops into onchosphere then to cyst larva in the muscle of pig; The entry stage into secondary host (Pig) is onchosphere

Light receptors found in diffused condition to differentiate between light and dark. These receptors are present on the dorsal surface.

Earthworms are very useful to human as they make the soil porous and increase its fertility through worm casting. They are called as Nature’s ‘plough man’.

Chordates are featured by the presence of  the following characters.        

• Notochord    (cephalic    or    head    region)  
• Pharyngeal    gill    silts
• Postanal    tail.

In birds flight muscles or breast muscles are attached to the large  sternum  or breast bone. The wings are powered by these flight muscles.

Two clavicles fused with inter clavicle to form a fork shaped bone called wish bone  or  furcula  or  bone of merry thoughts.

Etherians are placental animals. The foetus develop inside uterus of female where they are nourished by special structure called as placenta

Onchosphere is the larval stage in Taenia solium.

Taenia saginata lacks rostellum and scolex hooks