Animal Kingdom

Which of the following characteristic features always holds true for the corresponding group of animals?

1. Possess a mouth with an upper and a lower jaw – Chordata
2. 3-chambered heart with one incompletely divided ventricle – Reptilia
3. Cartilaginous endoskeleton – Chondrichthyes
4. Viviparous – Mammalia

Which one of the following characteristics is not shared by birds and mammals?

1. Viviparity
2. Warm blooded nature
3. Ossified endoskeleton
4. Breathing using lungs

Which of the following features is not present in the Phylum Arthropoda?

1. Parapodia
2. Jointed appendages
3. Chitinous exoskeleton
4. Metameric segmentation

Which of the following features is not present in Periplaneta americana?

1. Indeterminate and radial cleavage during embryonic development
2. Schizocoelom as body cavity
3. Metamerically segmented body
4. Exoskeleton composed of N-acetylglucosamine

Choose the correct statement

1. All mammals are viviparous.
2. All cyclostomes do not possess jaws and paired fins.
3. All reptiles have a three-chambered heart.
4. All pisces have gills covered by an operculum.

Body having meshwork of cells, internal cavities lined with food filtering flagellated cells and indirect development are the characteristics of Phylum

1. Mollusca
2. Protozoa
3. Coelenterata
4. Porifera.

Metagenesis refers to

1. occurrence of a drastic change in form during post-embryonic development
2. presence of a segmented body and parthenogenetic mode of reproduction
3. presence of different morphic forms
4. alternation of generation between asexual and sexual phases of an organism.

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