In terms of the number of individuals, which of the following taxa is most inclusive?

A. order

B. family

C. class

D. species

A characteristic that can possibly be shared by both living and non living organisms is

A. locomotion

B. irritability

C. increase in biomass

D. increase in size

The cell of an onion bulb can be differentiated from a cheek cell by the presence of

A. plasmalemma

B. chloroplast

C. cell wall

D. nucleus

In plants, the structure that performs a similar function with the testis in mammals is the

A. stigma

B. filament

C. anther

D. receptance

The bacteria type that are arranged in chains are the

A. staphylococci

B. clostidia

C. streptococci

D. basilli

The most abundant group of organisms in the animal kingdom is

A. mammalia

B. aves

C. annelida

D. insecta

Radial symmetry is a future common to

A. platyhelminthes

B. nematodes

C. coelenterates

D. arthropods

Which of the following is used mainly for balancing in fish?

A. the caudal fin

B. the pectoral fin

C. the anal fin

D. the dorsal fin

The beak of a duck is structurally adapted for

A. scooping and sieving food

B. catching and grasping food

C. picking and cracking food

D. boring and sucking food

The most important characteristic that makes reptiles to conquer terrestrial habitats is the possession of

A. long tail

B. scaly skin

C. sharp claw

D. amniotic egg