Animal Kingdom

A jawless fish, which lays eggs in fresh water and whose ammocoetes larvae after metamorphosis return to the ocean is

1. Neomyxine
2. Petromyzon
3. Eptatretus
4. Myxine

Which of the following endoparasites of humans does show viviparity?

1. Trichinella spiralis
2. Ascaris lumbricoides
3. Ancylostoma duodenale
4. Enterobius vermicularis

Which of the following represents the correct combination without any exception? (Characteristics – Class)

1. Sucking and circular mouth; jaws absent, integument without scales; paired appendages. – Cyclostomata
2. Body covered with feathers; skin moist and glandular, forelimbs form wings; lungs with air sacs. – Aves
3. Mammary gland; hair on body; pinnae; two pairs of limbs. – Mammalia
4. Mouth ventral; gills without operculum; skin with placoid scales; persistent notochord. – Chondrichthyes

Which of the following animals is not viviparous?

1. Platypus
2. Whale
3. Flying fox (Bat)
4. Elephant

Which of the following characteristics is mainly responsible for diversification of insects on land?

1. Exoskeleton
2. Eyes
3. Segmentation
4. Bilateral symmetry

Select the taxon mentioned that represents both marine and fresh water species.

1. Echinoderms
2. Ctenophora
3. Cephalochordata
4. Cnidaria

Which one of the following living organisms completely lacks a cell wall?

1. Cyanobacteria
2. Sea-fan ( Gorgonia)
3. Saccharomyces
4. Blue-green algae

Planaria possesses high capacity of

1. metamorphosis
2. regeneration
3. alternation of generation
4. bioluminescence.

Planaria possesses high capacity of

1. alternation of generation
2. regeneration
3. bioluminescence.
4. metamorphosis

A marine cartilaginous fish that can produce electric current is

1. Pristis
2. Torpedo
3. Trygon
4. Scoliodon.