Zoology

Branchial Basket   In Petromyzon the visceral skeleton contains branchial basket. It lies external to…
Myxine (Hagfish) Petromyzon (Lamprey) 1. Hag fishes are scavengers. They penetrate into the dead fishes…
The class Cyclostomata is divided into two orders:1) Petromyzonia and 2) Myxinoidea   Order 1:…
Cyclostomes’ are jawless vertebrates. They are primitive vertebrates. The cyclostomes are marine or fresh-water vertebrates.…
SUB-PHYLUM VERTEBRATA is further divided into two super-classes.   AGNATHA, AND GNATHOSTOMATA.   SUPER-CLASS 1.…
Vertebrates show the following characters, besides the chordate characters.   1. PRESENCE OF ENDO AND…
LARVAE OF PORIFERA Parenchymula (Stereo- gastrula) - Leucosolenia Rhagon - Higher sponges Amphiblastula - Sycon…
Most primitive primate Lemur     Most primitive mollusc Chaetoderma     Most primitive Arthropod…
Previously we discussed about various exocrine glands in and foramen in animals. This topic covers…
Fastest Mammal — Cheetah (Actiononyx jubatus) Fastest Bird — Spine tailed shift of Japan (fastest…
Largest mammal — Blue Whale Heaviest mammal — Blue whale Largest Carnivora Kodiak — Beer…
Most Intelligent HominidMan (Homo sapiens) Second Most Intelligent MammalDolphin Most Intelligent apeChimpanzee Heaviest bony fishPangarianodon…
Slowest Mammal — Sloth Slowest wing beat in bird — Vulture Slowest flying bird —…
Viviparous Arthropod — Scorpion Viviparous urodela — Salamendra atra Viviparous Salamender — Salamandra atra Viviparous…
NEMATHEHELMETHIS LARVAE   Filariforrn (Roundworm) is larvae of Ancylostoma (Hookworm) Microfilariae is larvae of Wuchereria…
Smallest Mammal — Shrew Smallest Bird — Humming bird of cuba (5.5 cm) Smallest ape…
ACINUS GLANDS are present in Frog, rabbit, man at Skin, liver and pancreas its function…