30:00

Modern Synthetic Theory of Evolution/Neo-Darwinism

43:04

Arthropoda: Characters and Classification

20:05

Evolution of Kidney in Vertebrates

18:56

Origin of Kidney in Verterbrates

30:01

DARWINISM

23:42

LAMARCKISM

20:34

Five Theories of Origin of Life

32:03

Annelida: Characters and Classification

22:16

Biological Evolution (Biogeny)

31:11

Oparin-Haldane Theory ||Chemical Evolution || Chemogeny

14:40

Jaw Suspension in Vertebrates

13:01

Sense organs in Hirudinaria

15:19

Nervous system in Hirudinaria/Leech

18:50

Types of Skull in Reptiles

19:09

Body wall of Hirudinaria/Leech

12:34

Symptoms of Snake Bite

15:34

How Does Snake Venom Work?

21:39

Poison Apparatus and Biting Mechanism in Snakes

15:04

Identification of Poisonous and non poisonous snakes

16:14

Comparative anatomy of Respiratory organs in Uromastix, Pigeon and Rabbit.

19:54

Respiratory organ in Rabbit

10:06

Comparative anatomy of Respiratory organs in Scoliodon and Frog

30:06

Respiratory organ in Pigeon

16:24

Respiratory organ in Frog and Uromastix

14:31

Respiratory organ in Scoliodon (Dog fish)

29:34

Comparative anatomy of Alimentary canal in Vertebrates

21:10

Alimentary canal in Vertebrates || Digestive system in Vertebrates

17:13

Modifications of Aortic arches in Vertebrates

13:40

Basic plan of Aortic arches

20:51

Comparative Anatomy of Integument in Vertebrates

16:41

Functions of Integument

11:38

Structure and Development of Placoid Scales

12:05

Structure and Development of Hair

12:14

Development of Feathers in Birds

19:58

Kinds of Feathers in Birds

22:05

Arrangement and Structure of Typical Feather

19:26

Structure of Integument(Skin)

27:35

Affinities of Cephalochordata

19:40

Petromyzon (Lamprey)

13:39

Ammocoete larva and its metamorphosis

21:35

Affinities and Systemic Position of Urochordata

13:22

Reproductive system in Branchiostoma/Amphioxus

11:19

Sense organs of Branchiostoma/Amphioxus

11:11

Nervous system of Branchiostoma/Amphioxus

15:12

Excretory system of Branchiostoma/Amphioxus

21:55

Blood vascular system of Branchiostoma/Amphioxus

13:46

Digestion in Branchiostoma/Amphioxus

24:22

Structure of Alimentary canal in Branchiostoma/Amphioxus

11:51

Body wall of Branchiostoma/Amphioxus

11:00

Skeleton of Branchiostoma/Amphioxus

14:53

External features of Branchiostoma/Amphioxus

15:45

Retrogressive metamorphosis in Ascidian larva

05:17

Nervous system of Herdmania

15:52

Development of Herdmania

12:58

Reproductive system in Herdmania

26:53

Blood vascular system in Herdmania

08:08

Excretory system of Herdmania

22:24

Herdmania- Digestive System-Structure of Alimentary canal

11:38

Herdmania- Digestive System

17:17

Test and mantle (body wall) of Herdmania