Match the following Columns.

Column I (organism)	Column II (Connecting Link)
A. Echina	1. Between Annelida and Mollusca
B. Peripatus	2. Between Reptiles and Mammals
C. Neopilina	3. Between Annelida and Arthropoda
D. Protopterus	4. Between Pisces and Amphibian

• A – 4; B – 3; C – 2; D – 1

• A – 2; B – 3; C – 1; D – 4

• A – 3; B – 1; C – 2; D – 4

• A – 4; B – 2; C – 1; D – 3

Animals of class-Mammalia have

• Seven cervical vertebrae

• Seven cranial nerve

• Single ventricular chamber

• Fourteen cervical vertebrae

Which one of the following is not a vertebrate?

• Sea cow

• Sea lion

• Sea horse

• Sea hare

The structure present in all adult vertebrates is

• Notochord

• Dorsal tubular nerve cord

• Pharyngeal gill slits

• All of these

Chondrichthyes is characterised by

• Placoid scale

• Ventral mouth

• Ctenoid scale and ventral mouth

• Placoid scale and ventral mouth

Consider the following statements and Choose correct ones from given options.

(I) Shark do not have any bone in its body.

(II) Water snake and salamander belongs to same class and have largest RBC.

(III) Silver fish is a true fish while cuttle and star fishes are mollusks and echinoderms respectively.

(IV) Ornithorhynchus is a connecting link between reptiles and mammals.

• I, II and IV

• I and IV

• I, II and III

•  III and IV

 A connecting link between plant and animal kingdom is

• Paramecium

• Chlamydomonas

• Chlorella

• Euglena

Slime-mould belongs to

• kingdom-Protista

•  Kingdom-Monera

• Kingdom-Fungi

• Kingdom-Plantae

Food storage in Leucosolenia occur by

• Ostia

• Osculam

• Thesocyte

• Spongocoel

A horse and a donkey can breed to produce mule which is an infertile animal. The infertility is because horse and donkey belong to different.

• Class

• Order

• Species

• Genus