The anticoagulant in the saliva of leeches, which prevents coagulation of blood, is called

The receptor pigment for light in the eyes of all land vertebrates is

Which one of the following is a fresh water sponge?

Which of the following is the largest starfish?

Chloragogen cells found in the wall of alimentary canal of earthworm are actually

Which one of the following pigments occurs in the blood of crustaceans?

The juvenile hormone in insects is secreted from

Which of the following is the transparent covering over the eyes of snakes?

Which of the following is a reptilian feature of a prototherian mammal?

Which one of the following is called a horned toad?

What is the correct sequence of stages appearing in the life cycle of Fasciola hepatica?

(i) Miracidium (ii) Cercaria

(iii) Redia (iv) Metacercaria

The channel running through the midbrain, connecting 3^rd and 4^th ventricles in humans, is known as

'Hatteria' or 'Tuatara' is the oldest living lepidosauria reptile and is known as a living fossil. The generic name of this form is

The foramen present in the heart of a crocodile is

Limbs and girdles are generally not found in snakes, but vestiges of the pelvic girdle and hind limbs persist in

The functional kidney of the frog is

Match the List - I (Animals) with List - II (Larval form) and select the correct answer using the codes given below in the lists:

List - I (Animals) List - II (Larval forms)

a. Taenia 1. No larval stage

b. Ascaris 2.Microfilariae

c. Planaria 3. Hexcanth

4. Rhabditoid

Which one of the following glands is homologous to the salivary gland of vertebrates?

Presence of notochord, dorsal tubular nerve cord and pharyngeal slits are the three important characters of phylum Chordata. In which of the following chordates are all the three characters present in the adult form?

Which of the following statements regarding mammals is correct?

A. Mammals have double occipital in their skull

B. Left aortic arch is seen in mammals

C. Order cetacea includes some aquatic mammals

Which one of the following pairs is not correctly matched?

The correct sequence of various sub layers in the epidermis of vertebrates integument starting from outside is

Which of the following groups of mammals is considered to be toothless?

Which one of the following pairs is a correct match of copulatory organ and the animals which possess it?

Correct scientific names for the Indian crocodile and gharial, are respectively:

Portuguese man-of-war is a

Vivipary is a common phenomenon in mammals. However, members of one order of the class mammalia are an exception. They do not give birth to young ones. Which one of the following orders constitutes the exception?

The example of prosimians are

Neoteny occurs in

Body cavity of Aschelminthes is